Copy for Originals · Original research

August 17 update or the Strait of Hormuz? Why Google Ads cost per lead rose in 2026

Since mid-August, advertisers on Reddit have been posting numbers that would alarm anyone: clicks costing three times what they did, return on ad spend cut in half, leads that dried up. Those are the extreme cases. But one in four of the Google Ads threads we coded blames the same thing, “the August 17 update,” and not one uses the words Strait of Hormuz, gas prices or recession, even though the war that has disrupted the strait since February has taken American gasoline from $2.94 to $4.48. We screened 3,173 posts and about 39,600 comments to see what advertisers actually said, then went to Google’s documents, the Energy Information Administration, the Federal Reserve, company filings and the 2022 gasoline spike to see what the evidence supports. The short version: the bidding change is real and explains the clearest cases; the economic squeeze is real and uneven; and the data that would separate the two for most accounts does not exist yet.

31 of 123first-hand “it got worse” threads blame the August 17 change
0 of 123use the words Strait of Hormuz, gas prices or recession
$4.05 → $4.48US regular gasoline, mid-August to September 21 (EIA)

What did the study find?

  1. The “August 17 update” was a bidding change, not an algorithm update, and higher CPA for campaigns that had been beating their targets was its documented consequence. According to Google’s help pages, the change affects how Target CPA and Target ROAS campaigns that are limited by budget bid: they now deliver closer to the target instead of beating it. Google’s own example is a $10 target that had been achieving $5 drifting back toward $10. Google says the old overperformance “wasn’t the intended behavior.” Rollout ran August 17 to 27, according to Google’s FAQ.
  2. The August 17 change explains a minority of the Reddit reports, and the clearest of those fit its fingerprint. Of 123 first-hand threads about Google Ads getting worse between June and October, 31 posters blamed August 17 and replies named it in 13 more. Another 32 posters named no cause, and 50 of the threads were posted before August 17. Among the 73 threads posted on or after August 18, 31 posters (42%) blamed it, and 56% counting replies. The clearest stories are budget-limited campaigns whose cost per click jumped within a day and whose return fell toward the stated target, but that pattern is a minority even among the 31.
  3. Few Reddit posters blame the economy. One poster in 123 did, citing rising fuel costs and interest rates, and replies raised the economy in 8 threads and oil or fuel in 3. Across all 3,173 posts and roughly 39,600 comments, the words Strait of Hormuz, gas prices and recession do not appear at all, but fuel, oil and the Iran conflict are tied to ad results in a few threads.
  4. The Hormuz squeeze is real, and pump prices and rates jumped in September, but the data do not date it cleanly. Regular gasoline rose about 8% in July, sat between $4.01 and $4.09 through August, below its May peak of $4.50, then rose about 10% in a month to $4.48 by September 21. Diesel rose through August and set an all-time record in September, the Conference Board’s confidence index fell 6.7 points and the Fed raised rates. Michigan sentiment, though, fell in August (55.2 to 51.7) and hit its record low in May. Complaint threads peaked in September: 49, against 29 in August. The study cannot say whether that reflects demand, the bidding change reaching more accounts, or more people posting.
  5. A demand shock and a bidding change may leave different marks, but the marks overlap. In LocaliQ’s 2022 benchmark, a year-over-year comparison of more than 79,000 campaign cycles from October 2021 to September 2022, a window that included the June 2022 gasoline spike above $5, cost per lead rose 19% and conversion rate fell 14% while cost per click rose only 2%. For budget-limited campaigns, one practitioner’s data show the August 17 change pushing cost per click up, though Amsive’s first-week Search average rose only 4%. Among the 31 posters who blamed August 17, the metrics were mostly cost per click, return on ad spend or volume. Four threads could be read as the demand pattern: three predate August 17 (one hit Meta and Google at once) and one blames August 17 itself. Only one or two fit it cleanly. Amsive also saw conversion rate fall after August 17, so a falling conversion rate does not by itself point to demand.

What are advertisers saying?

One post that illustrates the pattern arrived on r/googleads on September 7. A German ecommerce advertiser running a small, permanently budget-limited campaign laid out the numbers: “Aug 8–26 it was buying clicks at €0.22, 429 a day, running at 33x ROAS. On Aug 27 the CPC jumped to €0.67 and clicks fell to 172/day. Spend didn’t change, the ad didn’t change, the keywords didn’t change, nobody touched the account that day.”

Variations on that post appear in both subreddits, though the extreme cases are a minority: of the 31 posters who blamed August 17, about 3 reported cost per click up threefold or more and about 4 reported return on ad spend roughly halved or worse. Many reported smaller moves, such as cost per click up 20% to 50%. On August 18 (UTC), an r/googleads poster wrote that “Until today, the average CPC was around $2, and the highest bid it had ever placed was $5. This morning, it’s paying up to $20 per click, which is above the target CPA.” On August 28: “Our CPC was around $1.30 before August 17th, but since then it has gradually increased. Yesterday and today we’re suddenly at $11–12 CPC.” On September 10: “We usually have $25 - $30 cpc but for the last few days it went $100 to $500 per click.” On September 12, a poster who manages client accounts: “Almost every single one of the accounts I manage are experiencing a 20-50% increase in CPCs this month on google ads. Never in my 10 years of doing this have a seen this consistent of an increase across the board outside of BFCM.”

We pulled every post from r/PPC and r/googleads between June 1 and October 13, 2026, from the Arctic Shift archive of Reddit, along with every comment, and screened them with a list of 21 terms. The screen is broad and matched 802 posts, about a quarter of the total; we reviewed those, mostly as a title and the first few hundred characters. We kept 123 distinct threads in which a poster described their own Google Ads account, or a client’s, getting worse, and coded what the poster blamed and what the replies blamed. The method is at the end of the page and every thread is linked in the data file.

What the poster blamed, 123 first-hand Google Ads threads, r/PPC and r/googleads, June 1 to October 13, 2026
Cause named by the posterThreads
No cause named32
The August 17 bidding change31
Another Google change (AI Max, Performance Max shifting spend, budget pacing, policy, auto-applied recommendations)22
Something the poster changed20
Smart Bidding behaving badly7
Other (AI Overviews, bots)6
Competition3
Seasonality1
The economy (one poster, citing rising fuel costs and interest rates)1
Tariffs, oil, gas prices, the Strait of Hormuz0

Replies told a slightly different story. The most common reply, in 70 of 123 threads, was that the poster had changed something themselves: tracking, conversion definitions, targets, budgets, match types. August 17 came second, named in replies to 39 threads. The economy was raised in replies to 8 threads, and oil or fuel in 3. Only one poster, writing on September 24 about B2C clients in discretionary segments whose growth had slowed from 170% to “5-15% YoY in the last month or so,” offered a macro explanation of their own, and it named fuel costs: “partly a Google Ads algo change and partly rising fuel costs and interest rates. Customers are choosier when buying stuff and/or waiting for Q4 discounts.” Replies in at least one other thread also named the Iran conflict.

Part of the rise in complaints may simply reflect the subreddit discussing a named event. We counted, for every month since January 2025, the share of r/PPC posts whose text paired a metric with a direction (“CPA up,” “tanked,” “since August,” “lead quality”). By that strict screen, the share stayed under 8.5% every month for nineteen months. In August 2026 it was 11.1% and in September 10.1%, the two highest readings in the series. The result depends on the definition: under a looser three-word window September falls to third, and with posts about August 17 removed, September falls back within the earlier range while August stays high. The 123 coded threads follow the same curve: 20 in June, 19 in July, 29 in August, 49 in September.

What was the August 17 update?

It was not a search algorithm update. Google’s Search Status Dashboard lists no core update since May 21, 2026. The nearest ranking event is a spam update that began August 18 and finished August 21. We found no evidence that a spam update moves the price of an ad, and none ruling it out.

What did happen on August 17 was a change to how Google bids. Google announced it on June 15, according to PPC Land, mailed advertisers on July 2 with a warning that it “may cause temporary performance and traffic fluctuations,” and switched it on August 17. A line on Google’s help page, reported by Search Engine Roundtable on September 15, says the global rollout was completed on August 27. The change applies to campaigns that use Target CPA or Target ROAS and are labelled “Limited by budget.” Before, such a campaign could beat its target: Google’s help page says these campaigns “may overperform their stated targets.” Tell Google you could pay $10 a lead and, with a capped budget, it might deliver leads at $5. A Google sales slide shared by Mike Ryan of Smarter Ecommerce, and Ryan’s own reading, say the mechanism was bid suppression: holding bids down to stretch the money. Google’s help pages do not describe that mechanism. After August 17, Google steers the campaign back toward $10. Its help page uses exactly that example. Google’s FAQ says that to keep the old results an advertiser should “update your targets to match recent performance averages,” and says what the change is not: “This is specifically a bidding change. Google Ads auction mechanisms won’t change.”

So for a certain kind of account, a higher CPA after August 17 is not a malfunction. It is the documented, expected consequence of the change. Ginny Marvin, Google’s Ads Liaison, said on a podcast on August 12 that “the target will be the only lever for efficiency when campaigns are limited by budget.” Asked whether the change would help a campaign missing a $100 target at $125, she answered: “Yeah. No, it won’t.” A Google sales slide that Ryan shared on LinkedIn on August 5, as reported by PPC Land, was blunter about why the old behavior bothered Google: “Campaign can appear to overachieve (even while missing high quality demand).” Google’s stated aim was consistency, and PPC Land notes that Google’s own article does not say it meant to raise CPAs or CPCs.

The first measured data came from Amsive, an agency. In an article dated August 28, it compared August 17 to 23 with the three weeks before across dozens of advertisers and hundreds of campaigns: Search cost per click up 4%, conversion rate down 15%, CPA up 21%, spend and clicks about flat. Home services CPA rose about 22%, healthcare about 29% (with cost per click down about 10%), financial services about 30%; retail campaigns on Target ROAS saw returns fall 29% to 35%. Nearly four of every five post-change dollars sat in campaigns Google labelled budget constrained, a share Amsive called volatile and “a directional read rather than proof of cause.” It said it was too early for a final verdict, and conversion rate fell in both budget-constrained and other campaigns. Its September 9 follow-up found conversion rate about 30% below baseline in Maximize Conversions campaigns, which the change does not cover, and said it was harder to attribute the full decline to the update. The direction of Amsive’s first-week numbers matches the Reddit anecdotes: CPA up, conversion rate down. The size does not. Reddit posters describe cost per click tripling; Amsive’s Search average was up 4%.

Two things limit this explanation. First, scope: Google says campaigns that are not budget-constrained “won’t change their behavior,” and Manual CPC and Target Impression Share are untouched. Second, possible spillover. Ryan posted median-CPC charts on X on September 14, reported by Search Engine Roundtable, showing cost per click rising for budget-limited campaigns, and offered a hypothesis: “a sizable pool of cheap clicks have been liquidated and are now available to non-limited campaigns.” If he is right, a campaign the change never formally touched could feel it in the auction. That is a hypothesis, not a finding. In Ryan’s series, median cost per click rose 15.8% for budget-limited Target ROAS campaigns and fell 13% for campaigns that were never budget-limited. The series is euro campaign-level data with no stated sample, and Relevant Audience notes it is not a controlled study. Google says auction mechanisms are unchanged and has published no measurement of its own.

What has the Strait of Hormuz done to the American consumer?

The strait has been contested since February 28, 2026, when US and Israeli strikes on Iran were followed by Iran closing the waterway that, according to the EIA, carried more than a quarter of the world’s seaborne oil in 2024. It has not stayed shut: Iran’s foreign minister declared it open to commercial vessels during the April ceasefire, flows were reported near pre-war levels in late June, and the Revolutionary Guard closed it again on July 11. Brent crude, $71 a barrel the day before in the EIA’s spot series, passed $100 on March 12 and touched $138 on April 7. It stayed above $100 through mid-May even after the April ceasefire, and reached a brief low of $69 on July 2, after a mid-June memorandum between the United States and Iran. The memorandum was signed remotely on June 17 and 18 and is called the Islamabad Memorandum for Pakistan’s mediation. Then the truce collapsed. On July 13 President Trump announced the United States was reinstating its blockade of Iranian shipping and proposed a 20% fee on cargo through the strait; on July 23 the EIA’s Brent spot price touched $105, though futures closed near $100. Early September brought another escalation, with the US striking three Iranian tankers and Iran claiming strikes on US-linked vessels. On October 11 the UK Maritime Trade Operations agency reported six vessels struck in a single day. As of this writing, Iran says the strait is closed and the US Secretary of State says it is open.

At the American pump, the Energy Information Administration’s weekly series tells the story in three acts. Regular gasoline was $2.94 the week of February 23. It peaked at $4.50 in mid-May, fell to $3.78 by early July during the truce, and climbed again. Gasoline rose about 8% in July, from $3.78 to about $4.10, then sat between $4.01 and $4.09 through August, flat and still below the May peak. Diesel kept rising through August. The sharpest gasoline jump came in September: $4.16 the week of September 7, $4.32 a week later, $4.48 by September 21, a rise of about ten percent in a month. Diesel, which moves goods, set an all-time record of $6.53 that week.

US retail fuel prices, $ per gallon, EIA weekly series (via FRED, retrieved October 13, 2026)
Week ofRegular gasolineDieselWhat was happening
Feb 23$2.94$3.81Five days before the strikes on Iran
May 11$4.50$5.64Gasoline peak; Michigan sentiment’s May reading, 44.8, is a record low
Jul 6$3.78$4.58Trough during the Islamabad truce
Aug 17$4.05$5.45Google’s bidding change begins
Sep 7$4.16$5.97Escalation in the strait
Sep 21$4.48$6.53Diesel record; Fed hikes on Sep 16; mortgage rate passes 7%
Oct 5$4.35$6.20Latest

The August CPI, released September 11, put gasoline up 27.4% over twelve months and energy up 16.3%; gasoline alone was “over one third of the monthly all items increase.” Michigan’s consumer sentiment followed the pump. Its index, which had recovered to 55.2 in July, fell to 51.7 in August and 48.1 in September; the preliminary October reading is 46.3, close to the record low of 44.8 set in May. The Conference Board’s index did not fall with gasoline in the spring. It fell 6.7 points to 81.9 in September (its release also cites the rate hike and geopolitical tensions), consumer appraisals of current business conditions turned negative for the first time since September 2024, and the board noted that write-in comments about oil and gas prices “rose to new heights, reflecting September’s surge in fuel costs.” On September 16 the Federal Reserve raised rates for the first time since 2023. The 30-year mortgage, 5.98% in late February, passed 7% on September 24 and reached 7.40% on October 8.

That last channel matters for anyone selling something people finance. Between February and October the 10-year Treasury yield rose from 3.97% to above 5.2%. The Beige Book lists high fuel prices and rising financing costs together as drags on auto sales, though no source we found weighs one against the other. A roof, a furnace, a car, a house, a practice’s equipment: these got harder to finance as rates rose, while the buyer’s fuel bill rose too.

What does a demand shock look like inside an ad account?

The last time American gasoline passed $5, in June 2022, LocaliQ published a benchmark of more than 79,000 campaign cycles run for its search advertising clients, North American Google and Microsoft campaigns compared year over year from October 2021 to September 2022. Cost per lead rose in 21 of 23 industries, by 19% on average. Conversion rates fell in 91% of industries, by 14% on average. Cost per click rose 2%. Under a heading on inflation, LocaliQ wrote that “This could be bringing down conversion rates and driving up cost per lead.” It also named broad match and competition as factors. Skai, looking at the third quarter of 2022 across its own clients, found paid search clicks up 18% and cost per click down 5%. Its researcher Chris Costello said the lower ad prices in retail media and search shopping campaigns “seem to be a clear response to shoppers buying less, or less often.”

One reading of those numbers: when buyers thin out, the same clicks tend to convert less often, so cost per lead rises, while competition for clicks may soften, so the price of a click tends to hold or fall. A bidding change that stops suppressing bids tends to make clicks dearer for the campaigns it touches. The two can leave different marks, and an advertiser can look for them. But this is a rule of thumb. Even 2022 is mixed on click prices: Skai’s paid search figure for the third quarter was down 5%, while Tinuiti’s fourth-quarter figure was up 2%. And Amsive saw conversion rate fall after August 17 in budget-constrained campaigns and in others, so a falling conversion rate does not by itself point to demand.

Two causes, two possible fingerprints (rules of thumb, not tests)
SignAugust 17 bidding changeDemand shock (fuel, rates, confidence)
Which campaignsOnly Target CPA or Target ROAS campaigns labelled “Limited by budget”Not tied to a bid strategy, so it can reach Manual CPC and unconstrained campaigns (no source tests this)
WhenRolled out August 17 to 27; some posters report a one-day step, others a gradual riseGradual; the sharpest fuel and rate moves came in September
Cost per clickUp for budget-limited campaigns (median +15.8% in one practitioner’s data, +4% across Amsive’s Search sample), with spend roughly flatTends to be flat or down, though 2022 benchmarks were mixed
ClicksFewer, dearer clicks in budget-limited campaigns; impression share fell from 40% to 31% in Ryan’s dataAbout the same clicks, converting less often (but conversion rate also fell in Amsive’s data after August 17)
Other platformsOutside the change’s scope (Google’s FAQ covers Google Ads, SA360 and DV360); Microsoft’s liaison, quoted by PPC Land, says campaigns there can still beat targetsCould show up on Meta and Microsoft too; no source we found has measured it
Which businessesBudget-limited Target CPA or Target ROAS campaigns that had been beating their targets, in any industryFinanced purchases such as autos look hit hardest; sources do not show discretionary or lower-income buyers going first

Read the Reddit posts that blame August 17 against that table and the clearest land in the left column. Cost per click tripling on one day with spend unchanged; return on ad spend falling from 700–800% to about 350% in a campaign whose target had been 700%; Google recommending a 5,000% ROAS target to a Shopping campaign that had been set to 400%. Of the 31 posters who named August 17, 19 ran ecommerce, and their metric was ROAS, cost per click or volume, almost never conversion rate. But most of the 123 threads do not name August 17 at all, and the data file does not code whether each thread shows a one-day step, flat spend or a budget limit.

A handful could be read the other way, and none is clean. On August 23 an ecommerce advertiser spending $1,500 a day, who blamed the August 17 changes, reported falling from 50 to 60 sales a day at a 4.7% conversion rate to 15 to 20 sales at 1.5%; the top reply worked out that clicks were about 1,170 a day before and after, so what changed was how often a click became a sale, and added that the Google rep’s changes may have gone live the same day. On August 16, the day before the change began, a UK clothing retailer reported CPA rising from £18–25 to £60–80 over four days “in meta amd google equally”; a reply said Meta’s cost per thousand impressions had been climbing all year. On July 30 an advertiser whose Search and Performance Max campaigns had been stable for two years reported CPA up 63% in a week with “no changes,” alongside cost per thousand impressions up about 73%. On June 25, a poster whose spend was down 25% and conversions down 50% blamed AI Overviews and drew a reply that named the war: “The war in Iran, higher priced for everything including oil and other factors mean people are spending their time and money in other areas right now.” The June, July and August 16 posts predate August 17, so the bidding change cannot explain them. The August 23 post follows the change and blames it, so it is a confounded case.

Who is actually hurting?

Not everyone, and that is the second problem for a simple Hormuz story. Aggregate spending has not collapsed. Census retail sales rose 1.2% in August. Bank of America’s card data for September, published October 9, showed spending per household up 6.2% from a year earlier, 5.1% excluding gasoline, “both the third strongest growth rates over the past four years,” with lower-income households’ growth outpacing all but the top 5%. The Fed’s September statement called domestic spending “resilient.” Online, the Census Bureau’s second-quarter e-commerce estimate was up 12.2% from a year earlier, and Adobe counted $9.86 billion spent during Amazon’s October 6–7 Prime Big Deal Days, up 8.5%.

The damage looks narrower and uneven, though sentiment is depressed broadly. The Fed’s Beige Book for August, compiled from business contacts through August 24 and so before September’s jump in pump prices and rates, reported “heightened price sensitivity on the one hand and solid high-end purchases on the other.” Auto sales were “mostly subdued, dampened by downbeat consumer confidence, high fuel prices, and rising financing costs,” though district reports were mixed. In the Cleveland district, consumer spending “declined modestly for the fourth consecutive period as higher fuel and food prices strained household budgets.” The Atlanta Fed’s section said affluent consumers kept spending while others turned cautious. The July edition quoted a Richmond-district law firm reporting that “rising inflation and higher interest rates” had cut demand for its services. Procter & Gamble’s finance chief, asked about gas prices, said he could not point to gas as a specific impact, then said: “The more pressured consumer that will be more impacted by gas prices or incremental $100 of gas cost per week, they continue to look for smaller pack sizes.” He said better-off consumers were behaving as before. The Trade Desk, whose customers are the largest brand advertisers, told investors on August 6 that “autos and CPG have both been set back by tariffs and oil prices” and that “there are pressures on lower income consumers.”

For lead generation, the most direct testimony comes from Angi, the home-services marketplace. In the quarter ending June 30 its US leads fell 13% and service requests 6% from a year earlier, and its release attributes an 11% revenue decline “due primarily to macroeconomic conditions,” citing lower spending by contractors and “a shift in homeowner demand toward lower-consideration categories.” On the August 5 call, chief financial officer Julie Hoarau dated that shift: revenue “was materially impacted by a shift in mix and traffic starting about 10 days into March as oil and gas prices rose sharply following global events. We noticed that homeowner behavior changed, and demand moved away from larger jobs category, like roofing and HVAC,” toward smaller jobs. “In April, we saw more jobs being canceled or postponed. More recently, overall spend is back at expectations, but each job is more expensive, so homeowners are doing fewer jobs.” Angi says nothing about Google Ads, and part of its lead decline was a deliberate pullback from network traffic. But it is the one company in this study that dates a demand shift to the week oil prices spiked, five months before August 17.

Put the two halves together and the picture is uneven, K-shaped in places. Ecommerce in nominal dollars is growing, according to the Census Bureau, though Numerator measured a smaller average order on Prime Day ($46.89 against $57.12 a year earlier), the only US basket-size figure we found. Services are growing: Bank of America’s card data show September services spending up 5.4% from a year earlier, driven mostly by discretionary spending. People with money are spending it. People who finance purchases, or who fill a tank every week on a tight budget, are under pressure: the Beige Book and the Atlanta Fed describe trading down, borrowing and weaker car sales. But Bank of America’s September data show lower-income households’ spending growth at 5.5%, ahead of middle- and higher-income households, so they have not stopped spending. Businesses that sell to financed or tight-budget customers, from car dealers to roofers to the law firm in Richmond, may be seeing a Google click convert less often than in the spring. We found no data that measures that for car dealers, roofers or law firms this fall.

Are buyers disappearing, or just paying more per click?

Revenue is the metric that should separate the two stories. A bidding change raises what an advertiser pays per sale; it does not shrink the number of people who want to buy. A demand shock shrinks that number whatever the click costs. So we looked for revenue on the buyer’s side of the ad, in company filings and card data from June through early October.

Buyers have not disappeared. Census retail sales rose 1.2% in August and non-store sales 2.6%. Bank of America’s September card data show services spending up 5.4% and retail excluding gasoline up 3.5% from a year earlier. Adobe counted $9.86 billion over Amazon’s October 6–7 event, up 8.5%. None of those figures is adjusted for inflation, so a real decline is not ruled out, but a nominal one is not visible.

What the filings show instead is fewer transactions and bigger tickets, and the big jobs going first. Home Depot’s quarter to August 2, filed with the SEC on August 18, had comparable transactions down 1.0% and average ticket up 2.8%; on the call, merchandising chief Billy Bastek said big-ticket transactions over $1,000 were up 2.4%, but “larger discretionary projects remain under pressure,” and chief financial officer Richard McPhail cited “consumer uncertainty and housing affordability.” Lowe’s, a day later, reported comparable sales up 0.2% and online sales up 15.7% “despite pressure in discretionary DIY spending.” ServiceTitan, whose software runs the books for thousands of home-service contractors, said on September 8 that lead volume for its customers “grew at a more moderate seasonal pace during May and June compared to prior years before stabilizing July,” that this was “particularly true for our HVAC-focused customers,” and that “we’re not able to offset this lower lead volume with higher average ticket.” Its chief financial officer, Dave Sherry, added: “I don’t have clarity on what’s driving consumer behavior, particularly on lead volume.” On the ecommerce side, Numerator’s mid-event Prime Day tracker, as reported, put the average order at $46.89 against $57.12 a year earlier.

Two cautions. Almost all of this data ends in July or early August, before the bidding change, so it describes the market the change landed in rather than its effect. And the softness has causes besides fuel: housing turnover at historic lows, mortgage rates above 7%, and, for some companies, lost search traffic to AI answers. What the revenue side rules out is a collapse in buyers. What it supports is a buyer who is still spending, in fewer, pricier transactions, and skipping the roof.

So which was it?

For advertisers who named a cause, August 17 was the most common single answer, but it was a minority overall: 31 of 123 posters, 44 counting replies, with 32 naming no cause and 50 threads posted before the change began. Among threads posted from August 18 on, 42% of posters and 56% counting replies pointed to it. Where it hit, the fit is good. Google documents the change in behavior, though not its internals, and the earliest poster blaming it wrote on August 18, with none before. Weekly thread counts step up the week of August 24 rather than the week of August 17, which fits a rollout that ran to August 27. Amsive’s first-week numbers match the direction of the anecdotes but not their size. And a poster who blames August 17 is stating a belief, not establishing a cause. Google warned it would happen and told advertisers what to do about it.

For the economy, Reddit cannot tell us much. One poster in 123 raised it, and replies in 8 threads. That is a finding about what advertisers say, not about demand. Some posters do check demand: 10 of the 123 posts mention search demand, Google Trends, Keyword Planner or organic traffic. But only a minority do. Public data say the shift is real but uneven. Fuel prices, rates and the Conference Board index moved most in September, while Michigan sentiment hit its low in May and card spending held up in September. Financed purchases such as cars and big home projects show the clearest weakness, and Angi and ServiceTitan both date the softening in home-service leads to the spring. If your customers are among them, your conversion rate may have been sliding since the summer. We found no data that measures it, and August 17 may have landed on top of it.

The two could also compound. Google’s Target CPA page describes the target as an average, not a cap on every conversion, and after August 17 a budget-limited campaign aims to deliver closer to it. In a market where fewer visitors are ready to buy, such a campaign may find fewer conversions and pay more per lead. We found no source that demonstrates the compounding, and Amsive’s follow-up shows conversion rate about 30% below baseline in Maximize Conversions campaigns the change did not cover, which makes attribution hard. The strait is far away. The pump price is in many customers’ week. And for budget-limited campaigns, the bidding change ended the discount some of them had been getting.

How can you tell which one hit your account?

  1. Check the label. Open the campaign and look for “Limited by budget” and a Target CPA or Target ROAS strategy. If neither applies, Google says the August 17 change did not touch it, so whatever you are seeing did not come directly from the change. Ryan has suggested it can still reach other campaigns through the auction, but that is unmeasured.
  2. Find the day. Chart cost per click and cost per conversion by day for July through September. A single-day step between August 17 and 27 is the first thing to check for the bidding change. Google says the rollout ran in that window but does not say how individual accounts were switched, and some posters report a gradual rise. A slope that steepens from early September would be more consistent with the economy or seasonality. Treat this as a rule of thumb, not a test; practitioner guides such as Bidnamic’s add change history, Auction Insights, Google Trends and benchmarks to the checklist.
  3. Separate the click from the conversion. If clicks cost more and spend is flat, bids probably went up. If clicks cost the same and fewer of them convert, buyers may have gone away, but tracking problems and the bidding change can also lower conversion rate. Amsive’s first-week numbers show cost per click up 4% and conversion rate down 15% in the same week, and its data show conversion rate falling in both budget-constrained and other campaigns, so they cannot tell you which came first.
  4. Use a control. A campaign in the same account that is not budget-limited, a Manual CPC campaign, or your Meta or Microsoft account. If those worsened in the same weeks, the cause is probably not the August 17 change itself. That is suggestive, not conclusive: a Google spam update ran August 18 to 21, and Ryan argues the change can spill over into non-limited campaigns.
  5. Ask who your customer is. If they finance the purchase or pay for it out of discretionary money, the Beige Book (for autos) and The Trade Desk (for lower-income consumers) describe pressure on that customer, and Angi attributed its revenue decline to macroeconomic conditions. If they are a business, or a high-income household, the card data say they are still spending. Lower-income card spending has also kept growing, so do not assume pressure from income alone.
  6. Then act on the right cause. For the bidding change, Google’s FAQ advises setting the target to what you actually need, waiting one or two conversion cycles, and not adding data exclusions or bid limits in response. For a demand shift, the target itself may be wrong: a lead that closes less often is worth less, and the target CPA calculator will tell you how much less. For a cost-per-click rise you cannot explain, the PPC Troubleshooter walks through the causes in order.

What should advertisers watch next?

How was the study done?

  1. Reddit: Copy for Originals pulled every post from r/PPC (2,158) and r/googleads (1,015) dated June 1 to October 13, 2026, and every comment in both subreddits in that window (about 39,600), from the Arctic Shift archive of Reddit on October 13, 2026. Usernames were not recorded. A screen of 21 terms (CPA, CPL, cost per lead, conversion rate, ROAS, CPC, lead quality, tanked, dropped, spiked, since August, Aug 17, update and others) flagged 802 posts; a second sweep of titles that described worsening results without those terms added 205 more. Each was reviewed, mostly as a title and the first few hundred characters. 145 rows were coded (138 distinct threads after cross-posts were matched), of which 123 concern Google Ads; the rest concern Meta, Microsoft or an unclear platform and remain in the data file.
  2. Included: a first-hand account of the poster’s own or a client’s account getting worse: cost, return, volume or lead quality. Excluded: vendor pitches, how-to questions, new accounts with no baseline, pure tracking breakages, and “anyone else?” posts with no numbers of their own.
  3. Coded: metric and direction, the magnitude as the poster stated it, timing, the cause the poster named, the causes replies named (judged from the top-scoring replies and any that mentioned the usual suspects), and whether anyone in the thread mentioned the economy, consumer spending, inflation, oil, fuel, Iran, Hormuz, tariffs, interest rates or a recession. A separate search for those terms ran over every post and comment in the window and found 43 relevant mentions in 32 threads; they are in the macro-mentions file.
  4. Baseline: all 17,709 r/PPC posts from January 1, 2025 were pulled and scored by month with a strict pattern (a metric word near a direction word, or phrases such as “tanked,” “since August,” “lead quality”). The baseline file gives the monthly count, total and rate. The rates depend on the screen’s definition.
  5. Verification: Reddit quotations were compared with the archived thread text. Figures from Google, Amsive, the EIA, BLS, the Federal Reserve, the Conference Board, the University of Michigan, the Census Bureau, Bank of America, Angi, The Trade Desk and MediaPost’s 2022 coverage of LocaliQ and Skai were taken from the sources named in the sources list. Google’s help pages, Amsive’s two articles, the EIA and FRED series, the BLS release, the Fed statement and Beige Books, the Conference Board, the Michigan tables, the Census releases, the Bank of America and Trade Desk PDFs, and the Angi, Home Depot and Lowe’s SEC filings were read at source. Mike Ryan’s figures reached us through Search Engine Roundtable and TechWyse, Ginny Marvin’s remarks through PPC Land, and the P&G, Angi and ServiceTitan call quotes through third-party transcripts, so those are as reported there. Background research was delegated to AI research assistants; a person checked the figures used here against the sources named. After the first draft, every factual claim on the page was audited against sources and the page was revised; the results are in the table below the limitations.

Limitations

FAQ

Did the August 17, 2026 Google Ads update raise cost per acquisition?

For one kind of campaign, yes, and Google documents it. The August 17 change was not a Search algorithm update. Google changed how Target CPA and Target ROAS campaigns that are limited by budget bid: instead of beating the target, they now deliver closer to it. Google’s help page gives the example of a $10 target that had been achieving $5 moving back toward $10. Rollout ran August 17 to 27, according to Google. The agency Amsive, comparing August 17 to 23 with the three weeks before across dozens of advertisers, measured Search CPC up 4%, conversion rate down 15% and CPA up 21%, and said it was too early for a final verdict. Campaigns that are not budget-constrained, Manual CPC and Target Impression Share are not affected, according to Google.

Is the Strait of Hormuz crisis raising Google Ads costs?

Advertisers are not reporting it directly, and nothing we found measures it. In 123 first-hand r/PPC and r/googleads threads about Google Ads getting worse between June and October 2026, nobody used the words Strait of Hormuz, gas prices or recession. One poster blamed the economy, citing rising fuel costs and interest rates, and replies raised oil or fuel in three threads. The crisis is real: US regular gasoline went from $2.94 in February to $4.48 the week of September 21 (its high was $4.50 in May), diesel set a record $6.53, the Conference Board’s confidence index fell 6.7 points and the Fed raised rates. But through August pump prices were flat at about $4.05, and the squeeze appears uneven, with car sales and lower-income households under pressure while card spending overall kept growing. In LocaliQ’s 2022 benchmark, a year-over-year comparison across a window that included the June 2022 gasoline spike, conversion rates fell 14% and cost per lead rose 19% with cost per click up only 2%.

How can I tell whether the August 17 change or weaker demand hit my Google Ads account?

Check five things, as rules of thumb rather than proof. Whether the campaign shows “Limited by budget” and uses Target CPA or Target ROAS: if not, Google says the August 17 change did not touch it. Whether the shift happened on one day between August 17 and 27 or crept in over weeks; Google does not say how individual accounts were switched, so a one-day step is a clue, not a test. Whether cost per click rose with spend flat (more consistent with the bidding change) or stayed flat while conversion rate fell (more consistent with weaker demand, though Amsive saw conversion rate fall after August 17 too). Whether an unconstrained campaign, a Manual CPC campaign, or your Meta and Microsoft accounts worsened at the same time, which suggests the cause is not the change itself. And whether your customers buy on credit or with discretionary money, where the pressure from fuel prices and rates appears to be concentrated.

How well did the claims hold up?

We extracted 230 separate factual claims from the first draft of this page and checked each against sources. The counts below are for the draft; this version corrects, hedges or drops the claims marked overstated, unsupported or not verifiable.

Verdicts on the 230 claims in the first draft
VerdictClaimsLoad-bearingWhat the sources showed
Supported15819Matched the source as written
Overstated5827Real, but stated more strongly or generally than the sources allow; hedged or narrowed
Unsupported73Contradicted by the study’s own data or sources; replaced
Not verifiable74No source either way; marked as untested or removed
Load-bearing and headline claims that changed
First draft saidSources showedNow says
Nearly all advertisers blame August 17; most of the 123 reports fit it31 of 123 posters (25%) blame it; 42% of threads posted from August 18 onA minority; the clearest cases fit
Timing matches exactlyOnset fits, but weekly thread counts step up the week of August 24Fits a rollout that ran to August 27
Higher CPA was the intended resultGoogle states consistency as the aim; higher CPA is a documented consequenceDocumented, expected consequence
Amsive’s numbers match the anecdotesDirection matches; size does not (CPC +4% against tripling)Direction only
Hormuz, gas prices and recession do not appear in connection with ad resultsLiteral terms absent; fuel and the Iran conflict are tied to ad results in a few threadsWording limited to the literal terms
Confidence followed the pump; squeeze fits September betterTrue of Michigan, not the Conference Board before September; August data cut the other wayDating called uncertain
Cheap-click spillover to untouched campaignsOne practitioner’s hypothesis; his own series shows CPC down 13% for never-limited campaignsStated as a hypothesis
A clean test separates a bidding change from a demand shockHeuristics; conversion rate also fell in campaigns outside the changeRules of thumb with caveats
August 23 post cannot be pinned on the changeIt post-dates August 17 and blames itConfounded case
Angi leads fell “due primarily to macroeconomic conditions”The phrase describes Angi’s revenue decline; leads fell with a deliberate traffic shiftAttached to revenue; no Google link claimed
Quotes: Marvin, LocaliQ, Skai, P&G, August 18 post, Beige Book autosParaphrased, truncated or missing wordsCorrected to the source wording
Facts: Hormuz “closed since February”; September 7 post on r/PPC; “the one reply” naming the warStrait partly reopened; post was on r/googleads; at least two other replies named the conflictCorrected

Sources

How to cite: Copy for Originals, “August 17 update or the Strait of Hormuz? Why Google Ads cost per lead rose in 2026,” October 13, 2026, https://tools.copyfororiginals.com/google-ads-august-17-update-vs-hormuz/. Data licensed CC BY 4.0.