Microsoft Advertising announced it will remove Max CPC from new campaigns on October 1, 2026. Here is what service businesses running Bing Ads need to know and do before the deadline.
Ido Cohen · Published 2026-08-25 · Paid Advertising
Microsoft Advertising just flipped the switch: starting October 1, 2026, you will no longer be able to set a Maximum Cost-Per-Click (Max CPC) cap when building new standalone automated campaigns on the platform. The announcement, which surfaced on August 20 and was confirmed by Search Engine Journal, Search Engine Land, PPC Land, and Search Engine Roundtable, is a hard deadline — not a suggestion. If you're a plumber, HVAC company, dentist, real estate agent, or any other local service business running Bing Ads, you have about five weeks to rethink how you control ad spend on one of the most underrated lead-gen platforms in the country.
This is a narrower change than the headlines make it sound, so let's be precise.
According to Search Engine Land, Microsoft Advertising will stop allowing advertisers to set Max CPC limits on new campaigns using several standalone automated bidding strategies — specifically Maximize Conversions, Maximize Conversion Value, and Maximize Clicks. That restriction takes effect on October 1, 2026, and applies only to campaigns created after that date.
Here is what is not changing:
So if you're already running a Bing Ads campaign with Max CPC locked in, nothing changes on October 1 for that specific campaign. The pain hits when you go to create a new campaign after October 1 and discover that the field is simply gone.
Microsoft's rationale is straightforward: according to Search Engine Journal, the company says Max CPC can interfere with its automated bidding system's ability to hit performance goals — even when the cap is set above the campaign's average CPC. In plain English, the AI wants to bid aggressively on high-value clicks that fall above the cap, and the cap physically prevents it from doing so. You asked for 10 leads at $40 each, but then you also told the system it can't bid more than $2.50 per click — and those two instructions fight each other.
As Search Engine Roundtable noted from Microsoft's own email to advertisers: "Max CPCs override stated goals and can lead to spend pacing irregularities." Microsoft says it has also been making back-end improvements to automated bidding to improve responsiveness and help advertisers reach their targets.
This mirrors what Google has been doing for years. Google sunset Enhanced CPC for search and display by March 2025. And just this month — on August 17, 2026 — Google began pushing over-performing Target CPA and Target ROAS campaigns back toward stated figures in budget-limited campaigns. Both platforms are betting hard that outcome-based targets (what did you pay per lead?) are a better control mechanism than click-price caps.
They're not entirely wrong. But they're also not entirely right for every service business.
Here is the part that gets glossed over in the trade press: for a lot of local service businesses, Max CPC was not a performance optimization tool — it was a safety valve.
A roofing company running Bing Ads in a competitive metro might set a Max CPC of $8.00 not because the algorithm needs the guidance, but because the owner does not want to discover on Monday morning that the system spent $4.50 per click on brand keywords or irrelevant searches over the weekend. Max CPC was a ceiling. It was insurance.
Without that ceiling on new campaigns, as Search Engine Land noted, you will have less direct control and will "instead need to rely more heavily on budgets and conversion-based targets." That is fine — if your conversion tracking is airtight. If it is not, the algorithm is flying blind, and budget limits become your only guardrail.
Here is the breakdown of what you lose and what replaces it:
The mindset shift Microsoft is pushing: stop managing the price of clicks and start managing the price of outcomes. Set a Target CPA (cost per lead) that reflects what a new customer is actually worth to your business, and let the system work backward from there.
This is not a Microsoft-only story. Within the span of about 36 hours last week, three separate ad platforms signaled the same thing, according to PPC Land's coverage: the number of places where an advertiser can name a maximum click price is shrinking across the industry.
Microsoft moved the most explicitly with the October 1 deadline. Google added AI Max experimentation and planning features on August 21 — including, per PPC Land, the ability for Performance Planner to forecast the effect of bidding or budget changes and then apply the recommended adjustment directly, without the advertiser manually executing it. And ChatGPT Ads, OpenAI's emerging ad platform, now defaults new campaigns to automated bidding.
The direction is clear: every major ad platform is moving toward a model where you tell the AI what outcome you want and at what price, and the AI handles the auction mechanics. Manual click-price controls are being treated as legacy infrastructure that gets in the way.
For service businesses, the practical meaning is this: the quality of your conversion tracking and your target-setting is now the primary competitive lever. If you can tell the platform "I want leads at $35 each" with confidence because your tracking is accurate and your targets are realistic, you will benefit from this shift. If your tracking is broken or your targets are guesses, automated bidding without a Max CPC safety net is a faster way to waste budget.
If you're not familiar with AI Max for Search, now is the time to get familiar. Microsoft Advertising launched AI Max for Search in May 2026 — and according to coverage from Jazzle Marketing, it is the most significant upgrade to what used to be called Bing Ads in years.
AI Max is Microsoft's version of Google's AI Max for Search (similar naming, parallel products). It layers three things onto your existing search campaigns:
1. Broader query matching — the system matches your ads to searches beyond your literal keyword list, using AI to infer intent
2. Generated creative — Microsoft's AI writes and tests ad copy variations dynamically
3. Dynamic landing page selection — the system routes clicks to the most relevant page on your site
According to Stacked Marketer's coverage, while Microsoft was removing Max CPC on one hand, it was simultaneously rolling out AI Max globally on Microsoft Search on the other. The message is: here is what you're getting instead of manual controls.
For a local service business — say, an HVAC contractor — AI Max can theoretically surface your ads to people searching for heating repair, AC tune-ups, emergency furnace service, and related queries you might not have thought to bid on, without requiring you to maintain a massive keyword list. That is genuinely useful. The catch is that broader matching without Max CPC means you need tighter negative keyword lists and sharper tCPA targets to avoid paying for unqualified clicks.
You have five weeks until October 1. Here is the specific action plan:
This week (by August 29):
1. Pull a report of every active Microsoft Ads campaign using Maximize Conversions, Maximize Conversion Value, or Maximize Clicks. Note which ones have a Max CPC set.
2. For each campaign, compare your stated Max CPC to your actual average CPC over the last 90 days. If they're close, the cap has been constraining performance. If there's a big gap, the cap was mostly inactive anyway.
3. Verify your conversion tracking. Go to Tools > Conversion goals and confirm that every lead form submission, phone call, and booking action is firing correctly. This is non-negotiable before you lean on automated bidding.
Next two weeks (by September 12):
4. For campaigns where Max CPC was genuinely active (actual CPC is close to the cap), run an experiment without the cap and set a tCPA goal instead. Microsoft's Bid Target Adjustment Tool can help you calibrate the right target.
5. Build out your negative keyword list. Broader matching without a price ceiling means irrelevant clicks are more expensive, not less. Add competitor names you don't want to show for, irrelevant service categories, and job-seeker terms ("HVAC job," "plumber salary," etc.).
6. If you need a hard click-price ceiling on new campaigns after October 1, explore portfolio bid strategies — Max CPC stays available there.
Before October 1:
7. Audit any campaign templates or internal playbooks your team or agency uses. If your standard setup includes a Max CPC field for new campaigns, update the template so you're not confused on the first day the field disappears.
8. If you use third-party tools connected to Microsoft Ads, note that the legacy SOAP API will no longer receive new features after October 1, 2026 — you'll want to ensure your tools are migrated to the REST API.
The bottom line: don't panic, but don't ignore this either. The change itself is manageable — but it will expose bad tracking and unrealistic targets fast. Fix those first.
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Will my existing Bing Ads campaigns be affected on October 1?
No. Microsoft has confirmed that campaigns created before October 1, 2026 that already use Max CPC will retain that setting. There is no forced migration. The change only applies when you build a new standalone campaign after the deadline.
I run Microsoft Ads for my law firm / dental practice / HVAC company — do I even have enough volume to worry about this?
Yes, and here's why: Microsoft Search reaches roughly 30% of U.S. desktop search volume, and competition on Bing Ads is typically lower than on Google, which often makes cost-per-lead cheaper for local service businesses. If you've been using Max CPC as a budget guardrail, you need a replacement control before October 1 — that replacement is a well-set tCPA goal and a realistic daily budget.
What is a tCPA target and how do I set the right number?
tCPA stands for Target Cost-Per-Acquisition — the average amount you're willing to pay for one lead or conversion. To find the right number, look at your last 90 days of data: total ad spend divided by total leads equals your current CPA. If that number is profitable, set your tCPA at or near it. If you're profitable and want more volume, raise the tCPA slightly. If the current CPA is too high, lower it — but expect the algorithm to reduce impression volume in response.
What if I absolutely need a click-price cap on new campaigns after October 1?
Use a portfolio bid strategy. Microsoft is keeping Max CPC available in portfolio bidding for both new and existing campaigns after October 1. Portfolio bidding lets you group multiple campaigns under one shared bid strategy and still set a Max CPC ceiling. It requires a bit more setup, but it preserves the control you're used to.
Is Microsoft Advertising's AI Max worth turning on alongside these bidding changes?
Potentially yes, especially if your keyword list is thin or your industry has a lot of long-tail search variation (think: "emergency water heater repair near me at night" vs. "plumber"). AI Max expands match coverage and generates creative variants — but it requires clean conversion tracking and tighter negative keyword management to avoid wasted spend. Run it as an experiment alongside your existing campaigns first rather than flipping the whole account over at once.
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