How to Use Google Ads’ Bid Target Adjustment Tool in 2026

Google Ads' Bid Target Adjustment Tool helps advertisers review budget-limited campaigns using Target CPA, Target ROAS or, for Demand Gen, Target CPC. It is especially important after Google's bidding change that took effect on August 17, 2026.

To use it, open the “Review your campaign targets” notification in Google Ads, select Review campaigns, compare each campaign's stated target with its recent actual performance, then choose whether to keep the target, apply the recent-performance suggestion or enter a custom goal.

The key decision is not “Which number gets more traffic?” It is “Which CPA or ROAS is genuinely profitable for the business?”

Why Google introduced the tool

Google changed how target-based bidding behaves when a campaign is marked Limited by budget.

Before August 17, some budget-constrained campaigns performed much better than the target entered by the advertiser. Increasing the budget could then produce unpredictable changes in efficiency.

Under the new behavior, eligible campaigns optimize more consistently toward the target that is actually saved in the account—even after a budget change.

That sounds sensible, but it creates a risk when the saved target no longer reflects the advertiser's real expectation.

Google gives a clear example in its official explanation of the bidding update:

• Target CPA saved in the campaign: $10
• Recent actual CPA: $5
• Possible behavior after the update: performance trends closer to the stated $10 target
• Action if the advertiser wants to preserve the previous efficiency: lower the target toward $5

Google does not automatically change the budget or bidding target. The advertiser must review the numbers and decide.

Which campaigns are affected?

The change applies to limited-by-budget campaigns using target-based automated bidding.

Relevant strategies include:

• Target CPA
• Target ROAS
• Target CPC for Demand Gen

Google lists the affected campaign types as:

• Search
• Shopping
• Performance Max
• Demand Gen
• Travel

Display and Hotel campaigns already used the newer bidding behavior. App campaigns, Video Reach campaigns and Video View campaigns continue using the previous behavior.

The update is available across Google Ads and supported management platforms, including Search Ads 360. Google also lists Google Ads Editor and the Google Ads API as supported platform environments.

What “Limited by budget” really means

A campaign receives the Limited by budget status when its average daily budget is too low to capture all the traffic available under its current targeting and bidding settings.

It does not necessarily mean the campaign is failing. A limited campaign may still be profitable.

The status means Google is reducing how often ads enter or win eligible auctions because the budget cannot fund all available opportunities. According to Google's Limited by budget guidance, common causes include:

• A daily budget that is low relative to search demand
• More aggressive bids or bid adjustments
• Competitive keywords or audiences
• A Target CPA or Target ROAS that interacts poorly with the available budget
• Expanded targeting that makes the campaign eligible for more auctions

The status should prompt a business decision, not an automatic budget increase.

How to open the Bid Target Adjustment Tool

Google provides two main routes.

Method 1: Use the account notification

1. Sign in to Google Ads.
2. Find the notification banner labeled Review your campaign targets.
3. If the banner is not visible, open the Notifications panel.
4. Select Review campaigns.
5. Google opens the standalone Bid Target Adjustment Tool.

Google says these notices can appear for advertisers with an affected target-based campaign that was limited by budget at some point during the previous 12 months.

Method 2: Open it from a campaign

1. Go to Campaigns.
2. Select the campaign you want to review.
3. Open its Settings.
4. Select Bidding.
5. Choose Review campaigns.

For campaigns managed through Search Ads 360, use the notification inside Search Ads 360 and select Review bid strategies. The adjustment tool may not appear in the linked Google Ads account.

What to check before applying a recommendation

Do not select Apply until the conversion data is trustworthy.

Confirm conversion tracking

Target CPA and Target ROAS optimize around the conversion actions included in the account's Conversions column. A campaign can appear highly efficient when it is counting weak actions such as page views, duplicate form submissions or imported conversions with incorrect values.

Check:

• Which conversion actions are set as primary
• Whether duplicate conversions are being counted
• Whether revenue and lead values are accurate
• Whether offline conversions are arriving late
• Whether attribution settings changed
• Whether the campaign recently changed landing pages or tracking tags

If you promote campaigns through social channels as well, use consistent URL tracking. Our guide to tracking campaigns in GA4 with UTM parameters explains how to separate those sessions from paid search and other sources.

Allow for conversion delay

Recent performance may look worse because conversions have not finished reporting. Compare a date range that allows for the normal sales cycle and conversion lag.

A company that closes leads after 14 days should not judge yesterday's clicks as though they have already produced their final results.

Check for temporary events

Sales, holidays, inventory shortages and one unusually strong creative can temporarily change CPA or ROAS.

Ask whether the recent number is repeatable. If it is only the result of a short promotion, making it the permanent bid target can restrict volume when conditions return to normal.

Calculate the profitable target

The platform can show what happened, but it cannot determine the business's true margin without reliable value data.

For lead generation, estimate:

Maximum target CPA = close rate × acceptable cost per acquired customer

If 10% of qualified leads become customers and the business can afford $200 to acquire one customer, the maximum sustainable lead CPA is approximately $20.

For ecommerce, calculate ROAS using contribution margin rather than revenue alone when possible. A campaign can hit an impressive revenue target while still losing money after product cost, shipping, returns and payment fees.

Your four main choices

Option 1: Keep the current target

Keep the saved target when it already represents the business goal.

Suppose a campaign has a $20 Target CPA and has recently achieved $14, but the company remains profitable up to $20 and wants more conversions. Leaving the target at $20 may allow the system to scale toward that business-approved threshold.

The likely trade-off is that the reported CPA may rise while conversion volume grows.

Option 2: Match recent actual performance

Use the tool's Apply option when the recent result is sustainable and the business wants to preserve that efficiency.

Google's example is a $10 Target CPA campaign achieving a $5 actual CPA. Lowering the target toward $5 tells the bidding system that $5—not $10—is the efficiency level to pursue.

This can protect unit economics, but a stricter Target CPA may reduce auction participation and conversion volume.

For Target ROAS, the direction works differently:

• A higher Target ROAS is stricter and prioritizes efficiency.
• A lower Target ROAS permits more aggressive spending and may increase volume.

If a campaign has a 300% Target ROAS but has consistently achieved 500%, raising the target toward the proven level may preserve efficiency. It may also reduce scale, so confirm that 500% is sustainable rather than a temporary spike.

Option 3: Enter a custom target

A custom target is often the best choice when the saved target is outdated but recent performance is not the correct long-term goal.

Google illustrates a campaign with:

• $10 stated Target CPA
• $5 recent actual CPA
• $7 CPA that fits the advertiser's business plan

Entering $7 gives the system room to scale without accepting the full $10 cost.

Custom targets are useful when:

• Margins changed
• Lead quality improved or declined
• The sales team can handle more volume
• A seasonal campaign has a different profitability threshold
• New customer value differs from repeat-customer value

Option 4: Change the bid strategy

An advertiser focused primarily on volume can switch to Maximize Conversions or Maximize Conversion Value without a target.

Those strategies generally try to spend the available budget to produce the greatest total outcome. CPA or ROAS may fluctuate more when the budget changes because the system is not constrained by a specific target.

This is appropriate when total conversions or conversion value matters more than holding a fixed efficiency threshold. It is risky when margins are tight or conversion values are unreliable.

A safe workflow for Target CPA campaigns

Use this sequence:

1. Filter campaigns by Limited by budget.
2. Identify campaigns using Target CPA.
3. Compare the saved target with actual CPA over a representative period.
4. Exclude incomplete conversion days.
5. Check lead quality, not just form volume.
6. Calculate the maximum profitable CPA.
7. Choose the current, recent or custom target.
8. Make one meaningful change at a time.
9. Record the date and old target.
10. Evaluate after enough conversions have accumulated.

Google's Target CPA documentation recommends evaluating a longer view when data is available, such as the previous 30 days with at least 30 conversions. Low-volume accounts should avoid reacting to a handful of conversions.

A safe workflow for Target ROAS campaigns

Target ROAS requires dependable conversion values.

Before changing it:

1. Confirm revenue or lead values are passed correctly.
2. Exclude cancelled orders, refunds and duplicate purchases where possible.
3. Separate new-customer economics from repeat-customer revenue if they differ.
4. Compare actual ROAS with the stated target.
5. Calculate the minimum profitable ROAS.
6. Decide whether the goal is greater efficiency or more revenue volume.
7. Apply a target that reflects the business goal rather than the best week in the report.

A higher target usually makes bidding more selective. A lower target usually allows the campaign to pursue more conversions at lower efficiency.

Should you increase the budget too?

A target adjustment and a budget increase solve different problems.

• The target defines the efficiency Google should pursue.
• The budget limits how much the campaign can spend.

After the August 2026 change, Google says advertisers can increase budgets on eligible campaigns with more predictable optimization toward the stated target.

Increase the budget when:

• Conversion tracking is reliable
• The target is profitable
• The campaign has missed eligible traffic
• The business can fulfill more orders or leads
• Cash flow supports the extra spend

Do not increase it merely to remove the Limited by budget label.

Google advises evaluating a budget increase after one to two conversion cycles. A conversion cycle is the time from an ad interaction to a completed conversion, so its length differs by business.

Common mistakes to avoid

Applying every recommendation at once

Account-wide changes make it difficult to identify which target caused a performance shift. Prioritize campaigns with meaningful spend and clear conversion data.

Treating Google's recent CPA as a guarantee

The number is historical, not a promise. Auction competition, conversion rates, offers and website performance can change.

Lowering Target CPA too aggressively

An unrealistic Target CPA can restrict traffic and leave the campaign unable to spend. Tighten the target only when the data and margins support it.

Raising Target ROAS without enough value data

A very high ROAS target can reduce auction eligibility. Small datasets can make an exceptional result look repeatable when it is not.

Ignoring channel distribution

Google notes that multi-channel campaigns such as Performance Max and Demand Gen may shift traffic between channels. Review placement and channel-level changes alongside total results.

Changing tracking and bidding together

If conversion tracking changes on the same day as the bid target, the before-and-after comparison becomes unreliable.

How to measure the result

Create a simple change log containing:

Compare performance using consistent attribution and complete conversion windows. Look beyond the top-line metric:

• Total spend
• Conversion volume
• Conversion value
• Actual CPA or ROAS
• Impression share
• Lost impression share due to budget
• Lead quality or refund rate
• Channel mix for Performance Max and Demand Gen

Quick decision guide

Use this rule of thumb:

• Current target is profitable and you want more volume: keep it, then consider increasing budget.
• Recent efficiency is profitable and must be preserved: apply a target closer to recent performance.
• Recent results are unusually strong or weak: use a custom target based on business economics.
• Volume matters more than stable CPA or ROAS: consider Maximize Conversions or Maximize Conversion Value.
• Tracking is unreliable: fix measurement before changing bidding.

Final recommendation

The Bid Target Adjustment Tool is useful because it exposes a mismatch that many advertisers miss: the target entered months ago may be very different from the campaign's actual performance and the company's current economics.

Review limited-by-budget campaigns, verify the conversion data, calculate a profitable threshold and adjust only the targets that no longer represent the real goal.

Google's August 17, 2026 update makes campaigns follow saved targets more consistently. That makes accurate targets more valuable—but it also makes an outdated target more expensive.