Microsoft Ads Removed Max CPC From New Campaigns. Use This Rule Table Before Q4 Spend

A Microsoft Ads campaign created this week can behave differently from an otherwise similar campaign built in September.

The reason is not necessarily auction pressure.

From 1 October 2026, Microsoft Advertising stopped offering a Maximum CPC setting when advertisers create certain new non-portfolio campaigns using automated bidding.

The affected strategies are Maximize Clicks, Maximize Conversions with an optional Target CPA, and Maximize Conversion Value with an optional Target ROAS.

Existing campaigns created before 1 October that already use a Max CPC keep it.

Portfolio bid strategies keep the control as well.

That creates a simple but important Q4 measurement problem: two campaigns using similar objectives may now have different bidding controls purely because they were created on opposite sides of the 1 October cutoff.

The 1 October rule is narrower than “Microsoft removed CPC controls”

Microsoft’s own product update defines the change precisely.

From 1 October, Max CPC is no longer available when creating new non-portfolio campaigns using:

Maximize Clicks;
Maximize Conversions with Target CPA;
Maximize Conversion Value with Target ROAS.

Microsoft says existing campaigns created before 1 October that already use Max CPC retain the setting.

It also says Max CPC remains available for new and existing campaigns using portfolio bid strategies.

That means the useful question is not:

Does Microsoft Ads still have Max CPC?

It is:

Does this particular campaign still qualify for the control?

Campaign state	Max CPC status
Existing campaign created before 1 Oct with Max CPC already set	Retained
New non-portfolio Maximize Clicks campaign	Not available
New non-portfolio Maximize Conversions + Target CPA campaign	Not available
New non-portfolio Maximize Conversion Value + Target ROAS campaign	Not available
New or existing campaign using a portfolio bid strategy	Still available

Advertisers should avoid extending this table to strategies Microsoft did not name in the announcement without checking the live interface.

Why Microsoft says it made the change

Microsoft’s explanation is about conflicting optimisation signals.

A Maximum CPC tells the system not to bid above a particular click price.

A Target CPA or Target ROAS tells the system to optimise toward an outcome.

Microsoft argues that imposing a click ceiling on top of an outcome target can restrict the bidding system even where paying more for an individual click could still produce a better overall business result.

Its recommendation is to steer automated bidding through controls closer to the desired outcome:

campaign budgets;
Target CPA;
Target ROAS;
conversion value rules;
seasonality adjustments where appropriate.

That is Microsoft’s platform position, not proof that removing a CPC cap will improve every advertiser’s results.

The operational implication is simply that advertisers creating affected campaigns now have fewer click-level controls than they had before 1 October.

Do not mistake a settings change for a market change

This matters during Q4 because advertisers are already watching CPCs closely.

NEMO’s European Google Ads Q4 benchmark analysis makes the same measurement point from a different direction: a movement in click cost does not automatically tell you why performance changed.

With Microsoft Ads, campaign creation date is now another variable.

Imagine an agency runs two campaigns for similar products:

Campaign A was created in September and retains a Max CPC;
Campaign B was created on 3 October using the same automated objective but has no Max CPC option.

If Campaign B records higher peak CPCs, it would be easy to describe that as increased auction competition.

But the campaigns no longer have the same bidding constraint.

That does not prove the settings change caused the higher CPC.

It does mean the configuration difference must be eliminated as an explanation before blaming demand, competitors or Q4 inflation.

Run this 10-minute campaign check

Before launching or duplicating Microsoft Advertising campaigns this quarter, record these fields.

1. Campaign creation date

Was the campaign created before or after 1 October 2026?

2. Portfolio status

Is it using its own bid strategy or a portfolio bid strategy?

This matters because portfolio strategies retain Max CPC availability.

3. Current bidding strategy

Record the exact strategy rather than writing only “automated bidding.”

4. Max CPC state

For older campaigns, verify whether a cap is actually set.

For new affected campaigns, record that the setting is unavailable rather than leaving the field blank.

5. Target CPA or Target ROAS

If the campaign uses an outcome target, record the value before launch and every subsequent change.

6. Daily budget

Budget changes can alter delivery alongside bidding changes. Keep them in the same audit record.

7. First seven days of CPC distribution

Do not look only at average CPC.

Record median CPC, high-cost clicks or another repeatable distribution measure appropriate to the account.

8. Business outcome

Compare CPA, ROAS, lead quality or revenue alongside CPC.

The purpose is not to preserve the lowest possible click price. It is to identify whether the campaign is producing acceptable business outcomes under the new control structure.

Existing campaigns deserve their own label

One of the easiest mistakes will be comparing legacy and newly created campaigns as though they have identical settings.

They may not.

Agencies should add a simple field to campaign inventories:

Legacy Max CPC eligible: Yes / No

That becomes particularly useful when teams duplicate old structures, rebuild accounts or open new country campaigns.

The same principle applies to other Microsoft Advertising differences affecting European teams. NEMO previously documented a separate regional limitation in our Microsoft Ads Europe audience-gap analysis.

The platform can look globally consistent while individual controls differ by campaign state, product or market.

What NEMO will watch

The 1 October change is now live according to Microsoft’s own product update.

The next useful evidence is not another announcement.

It is whether advertisers see measurable differences between comparable legacy campaigns retaining Max CPC and newly created campaigns without it.

That requires controlled comparisons rather than screenshots of one expensive click.

For now, the practical rule is straightforward: