Target ROAS is a Google Ads Smart Bidding strategy that sets bids to get as much conversion value as possible while aiming for the return on ad spend you enter. A good target is not an industry number: start from your break-even ROAS, which follows from your margin, and keep it close to what the campaign already achieves.
This guide is part of the Google Ads hub. It covers how the strategy works, a worked calculation for your starting target, the data Google requires, how it compares with the other Smart Bidding strategies, and the 2026 changes to how targets behave.
How does Target ROAS work in Google Ads?
Target ROAS works by predicting the conversion value of each auction and bidding more where the expected value per dollar is high and less where it is low, so the campaign averages out near your target. ROAS is conversion value divided by ad spend, written as a percentage: $5 in value per $1 spent is 500%.
That formula and example come from Google's About Target ROAS bidding page. The same page states that you must set values for the conversions you track before you can apply the strategy. Without values, there is nothing to maximize.
Three behaviors matter in daily management. Target ROAS ignores manual bid adjustments except a device adjustment of minus 100%. Google advises against bid limits, because they restrict the bidding model. And the target is an average, so single days or keywords can land far above or below it.
The name in the interface changed in 2026. According to Google's note on how Smart Bidding strategies are organized, starting in June 2026 Search campaigns show "Target ROAS" as a standalone option instead of "Maximize conversion value with a Target ROAS." Google calls it "purely a visual change," and the Google Ads API, Google Ads Editor and the mobile app can show the old label during the transition.
How do you calculate a good starting target ROAS?
A good starting target ROAS comes from your margin, not from a benchmark. Break-even ROAS is 1 divided by your contribution margin, so a 40% margin needs 250% ROAS just to cover ad spend. Add the profit you want on top, then check the result against the ROAS the campaign already reaches.
Contribution margin is revenue minus product cost, shipping, payment fees and other costs that scale with each order, as a share of revenue. Ad spend comes out of that margin, and when it eats the full margin you break even.
Worked example (hypothetical numbers). A store sends order revenue excluding VAT as the conversion value. After product cost, shipping and payment fees, 40% of that revenue is left as contribution margin.
- Break-even ROAS is 1 / 0.40 = 2.5, or 250%. Below 250%, every sale from ads loses money.
- The owner wants 10% of revenue left as profit after ads. Ad spend may then take at most 30% of revenue, so the profit target is 1 / 0.30 = 3.33, or about 333%.
- Last month the campaign reached 380% at its current spend. A starting target of 333% to 350% protects profit and leaves the bidder room to buy more volume.
The same rule gives a quick lookup for other margins:
| Contribution margin | Break-even ROAS | Target ROAS for 10% profit on revenue |
|---|---|---|
| 20% | 500% | 1,000% |
| 30% | 333% | 500% |
| 40% | 250% | 333% |
| 50% | 200% | 250% |
| 60% | 167% | 200% |
Two checks keep the math honest. First, use the same definition of value as your tracking: if values include VAT and shipping, so must your margin math, and if you send gross profit as the value, break-even ROAS is 100%. Second, Google's value-based bidding guide recommends the last 30 days of ROAS as a reference. If actual ROAS sits well below break-even, a higher target cuts volume instead of fixing profit.
What does an account need before using Target ROAS?
An account needs three things before Target ROAS can work: conversion values that differ per conversion, enough conversion volume, and values that reach Google Ads quickly. For Search and Shopping campaigns, Google asks for at least 15 conversions in the past 30 days and two or more different values across your conversion actions.
Google's requirements as of October 2026:
- Varied values. Google's conversion values best practices ask for at least two unique values across at least two actions, and no values of zero.
- Volume per campaign type. The Target ROAS help page lists at least 15 conversions in 30 days for Search and Shopping, 15 conversions with valid values in 30 days across all Display campaigns combined, and 50 in 35 days for Demand Gen.
- Short conversion delay. Google recommends a delay under 7 days and asks you to feed conversion data "as soon as it's available."
- A ramp-up period. Report values for 4 weeks or one to two conversion cycles, whichever is longer, before you pick a target.
Lead generation accounts can use Target ROAS when values reflect lead quality or closed revenue imported from your CRM, not one flat amount per form fill. Which click receives that value depends on your attribution model.
Target ROAS vs Target CPA vs Maximize conversion value: which should you use?
Use Target ROAS when conversions differ in value and you have a return you must protect. Use Target CPA when every conversion is worth roughly the same. Use Maximize conversion value when the budget is the real limit and you want the most value from it, without promising a fixed return.
Target CPA is a Smart Bidding strategy that aims for a set average cost per conversion. Maximize conversion value is a Smart Bidding strategy that tries to get the most conversion value from your budget. Per Google's Maximize conversion value page, it tries to spend the full average daily budget when no target is set, and it behaves like Target ROAS once you add one.
| Criterion | Target ROAS | Target CPA | Maximize conversion value |
|---|---|---|---|
| Optimizes for | Conversion value at a set return | Conversions at a set average cost | Most conversion value within the budget |
| What you enter | A ROAS percentage | A cost per conversion | Only a budget |
| Needs conversion values | Yes | No | Yes |
| Budget use | Can underspend when the target is strict | Can underspend when the target is strict | Tries to spend the full daily budget |
| Fits when | Order or lead values vary and margin limits spend | Every conversion is worth about the same | Spend is fixed and efficiency is secondary |
The decision rule: pick the strategy your data can carry. If your values are unreliable or all the same, Target CPA is the honest choice. Google's own Target ROAS page recommends running Target CPA on the desired conversion goal first and adding values before you switch. If your values are reliable but you cannot name a minimum return yet, start on Maximize conversion value, watch the ROAS it delivers, and add a target once you know where break-even sits.
Where can you set a target ROAS?
You can set a target ROAS on a single campaign, in a portfolio bid strategy shared by several campaigns, and in Performance Max through its conversion value bidding. Google supports it for Search, Shopping, Display, App, Demand Gen, Hotel, Travel and Performance Max campaigns, but portfolios are not available for Performance Max, Hotel or Travel.
- Campaign level. Each campaign gets its own target.
- Portfolio bid strategy. A portfolio bid strategy groups campaigns, ad groups and keywords under one target and lives in the Shared library. It suits several small campaigns that share a margin profile, because the bidder pools their conversion data.
- Ad group targets. Google allows separate targets per ad group but does not recommend them, because they can restrict Smart Bidding.
- Performance Max. When you set bidding preferences for a Performance Max campaign focused on conversion value, the "Set a target return on ad spend" checkbox is selected by default with a suggested target when Google has a recommendation.
For short sales, seasonality adjustments tell Smart Bidding to expect a change in conversion rate. Google calls them ideal for events of 1 to 7 days and says they may not work as well beyond 14 days. For bulk target changes, Google Ads Editor is faster than the web interface.
How to set and adjust a target ROAS step by step
To set a target ROAS safely, confirm your values and volume, calculate break-even, start near the ROAS the campaign already achieves, and judge results only after one to two full conversion cycles. Google says the bidder reacts to a new target immediately, but the results need time to show in the data.
- Audit the conversion values. Check which actions are primary goals, what each value contains (revenue, VAT, shipping) and that no value is zero.
- Confirm the volume. Make sure the campaign meets the threshold for its type, such as 15 conversions in 30 days for Search.
- Calculate break-even and profit ROAS. Use 1 divided by your contribution margin, then add your profit goal.
- Pull the last 30 days of ROAS. Set the first target between your profit ROAS and the ROAS the campaign actually reached.
- Apply the target. Choose Target ROAS in the campaign or portfolio settings and enter the percentage.
- Wait one to two conversion cycles. A conversion cycle is the time from click to conversion, so recent days always look weaker.
- Evaluate on enough data. Google suggests a month or at least 50 conversions, then raise the target for efficiency or lower it for volume.
How often can you change a target ROAS?
You can change a target ROAS as often as you like, because Smart Bidding reacts to a new target immediately. A target change can still put the bid strategy into a "Learning" status for one to two conversion cycles, so judge each change only after the conversions from that period have come in.
Google's article on how bidding algorithms learn says: "You should feel comfortable changing CPA and ROAS targets as frequently as you would like, and by as large a magnitude as you would like." Its learning period article still lists a setting change as a trigger for the "Learning" status, which typically lasts one to two conversion cycles.
Common mistakes with Target ROAS
The most common Target ROAS mistakes come from a target that does not match the account: a number copied from elsewhere, a target far from actual performance, or conversion values that do not reflect margin. Each one either cuts volume or buys revenue that loses money.
- Copying a "good" ROAS from a forum or benchmark. A 400% target can lose money at a 20% margin and leave growth on the table at a 60% margin. Derive it from your own break-even ROAS.
- Setting the target far above actual performance. Google warns that an overly high target may limit traffic. Start near the last 30 days of ROAS and move toward your goal in steps.
- Leaving a low target on a budget-limited campaign. Since August 2026 the bidder aims closer to the target you set, so review "Limited by budget" campaigns that used to beat theirs.
- Feeding flat or inflated values. One fixed value per lead turns Target ROAS into a slower Target CPA, and values with VAT overstate the return. Send varied values that match your margin math.
- Blaming the bid strategy for a weak landing page. If ROAS stays below break-even, bidding cannot fix the offer. Work on conversion rate optimization and check your click prices in our guide to Google Ads cost.
