Google Ads has extended the maximum duration of its performance-based cost adjustments for Demand Gen campaigns from three weeks to 60 days, Search Engine Land reported on October 16. Google’s updated documentation confirms the longer window for the beta feature, which retroactively reduces campaign costs when conversion performance falls below what Google’s bidding systems predicted.
The adjustment is designed for the learning phase, when automated bidding has limited conversion data and performance is hardest to predict. If actual conversions come in below prediction, Google may automatically adjust costs downward to bring results closer to the advertiser’s target CPA or ROAS. Eligible campaigns can receive adjustments within five days of launch, with no manual setup — Google decides whether and when they apply. Eligibility is limited to qualifying Demand Gen campaigns using tCPA or tROAS bidding, and Google weighs account age, activity, conversion tracking quality, bidding practices and budget settings. Adjustments appear directly in campaign reporting as final costs, with no separate credits or notifications.
Why it matters: a 60-day safety window changes how advertisers can judge a new Demand Gen campaign — early inefficiency is no longer purely the advertiser’s risk while Google’s models learn. It is a trust mechanism for automated bidding, and it pairs with the budget-side controls in Google Ads Adds Channel Prioritization And Budget Allocation Controls and the automation described in Google Ads Automated Promotions Are Live. Google is explicit that an adjustment is not guaranteed, so tracking quality still decides outcomes.
Source: Search Engine Land, October 16, 2026, reporting Google’s updated Ads documentation.
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