Starting October 1, Microsoft Advertising will strip away manual cost-per-click controls from new campaigns using automated bidding strategies, forcing businesses to rely entirely on platform-set spend limits or conversion targets.
Microsoft Advertising is removing one of the last manual safeguards advertisers use to control spending on automated campaigns. Starting October 1, 2026, new campaigns using standalone automated bidding strategies will no longer allow Max CPC (cost-per-click) limits, shifting all spend decisions to the platform's algorithms.
Max CPC caps, which set a ceiling on what you pay for each click, will disappear from new campaigns using several standalone automated bidding strategies. This means the platform's algorithm decides your per-click cost based on your bidding strategy, with no manual override available.
Existing campaigns already using Max CPC limits will keep them and won't be affected. Portfolio bid strategies and other specific bidding approaches will retain Max CPC as an option for new campaigns.
Microsoft is pushing advertisers toward conversion-based bidding targets instead of manual cost controls. The company argues that automated bidding strategies perform better when you set a conversion goal (like revenue per purchase or cost per lead) and let the algorithm optimize spend to reach it, rather than capping individual clicks.
For businesses used to Max CPC as a safety net against runaway costs, this is a meaningful shift. You'll need to trust the platform's spend models or restructure your campaigns.
Existing campaigns should not be rebuilt or paused simply because of this change. However, if you plan to launch new paid search campaigns on Microsoft Advertising after October 1, you'll need to choose a different bidding structure in advance.
How WebKing runs this
We audit existing automated campaigns, flag those that will lose Max CPC protection, and restructure new campaigns to use conversion-based bidding or portfolio strategies that retain manual spend controls. This keeps your per-click costs predictable without rebuilding your entire campaign.
Existing campaigns with Max CPC limits will keep them and won't be forced to change on October 1. Only new campaigns created after that date will lose the option.
Portfolio bid strategies and several other bidding approaches will retain the Max CPC option, so you can use those for new campaigns if you need manual cost controls.
Switch to conversion-based bidding targets or use portfolio bid strategies, both of which give you spending controls without manual CPC caps.
No immediate action is required for existing campaigns, but you should plan ahead to avoid losing spend controls if you ever need to rebuild or expand those campaigns after October 1.
Sources
The Lab is original analysis by WebKing. We summarize and interpret developments from the sources above for industrial, commercial, and small business owners. Figures are reported as published by their sources.
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