Break Even ROAS Calculator: Find the ROAS Your Ads Must Beat

Last updated: 7 November 2026

Break-even ROAS is the return on ad spend at which your ads pay for themselves and nothing more. This break even ROAS calculator and the formula behind it show the number every campaign must beat before it makes a profit. I have run Google Ads accounts since 2013, and this is the first number I work out on any ecommerce account.

Quick Answer: How do you calculate break-even ROAS?

Break-even ROAS equals 1 divided by your profit margin before ad spend. If you keep 40% of each sale after product cost, shipping and fees, your break-even ROAS is 1 ÷ 0.40 = 2.5. Below $2.50 in sales per $1 of ad spend, those orders lose money. Try your own numbers in the calculator below.

This table shows break-even ROAS at common margins, as a ratio and in the percentage format Google Ads uses.

Source: arithmetic (1 ÷ margin). Percentage format from Google Ads Help: About Target ROAS bidding.

What is break-even ROAS and why does it matter?

Break-even ROAS is the lowest return on ad spend at which a sale covers its own costs and the ad that won it. At that point you make no profit and lose no money. Above it, each sale adds profit. Below it, you are paying to lose money.

ROAS itself is simple: conversion value divided by ad cost. Google Ads shows it as conversion value per cost, and its target ROAS bid strategy uses the same idea as a percentage. A ROAS of 4 means $4 of tracked sales for every $1 spent.

The catch is that ROAS measures revenue, not profit. The CANA Wine Company case study says this in its own notes. Two stores can both report a ROAS of 4 while one makes money and the other loses it, because their margins are different. Break-even ROAS is what turns a revenue ratio into a profit decision.

How do you use this break even ROAS calculator?

Enter one typical order and the calculator does the rest. Use your average order value and the costs you pay on that order, then read the margin and break-even ROAS under the fields. The numbers already filled in match the worked example below.

If the result says there is no margin left, your costs eat the whole order before any ad spend. No bid strategy can fix that. Pricing, product cost or shipping has to change first.

The calculator works on one order at a time. If your product groups carry very different margins, run it for each group rather than once for the whole store. A single store-wide number hides the products that cannot afford to be advertised.

What does the calculation look like step by step?

Here is the full working for an example store with a $100 average order. These are round numbers to show the method, not a client’s figures, and they match the calculator defaults.

1. Start with the average order value: $100.
2. Add the costs on that order: $40 product, $10 shipping and packaging, $3 payment fees at 3%, and $2 for returns. That is $55.
3. Subtract the costs from the order value: $100 minus $55 leaves $45 before ads.
4. Divide by the order value to get the margin: $45 ÷ $100 = 45%.
5. Divide 1 by the margin: 1 ÷ 0.45 = 2.22, or about 222% in Google Ads.

So this store needs at least $2.22 in sales for every $1 of ad spend before a campaign stops losing money. At exactly 2.22, the ads pay for themselves and nothing is left over. That leftover is what a target ROAS has to protect.

Which costs should you include in your margin?

Include every cost that comes with each extra order, and leave out costs you pay whether you sell or not. That gives you the margin each sale has available to pay for advertising.

• Product cost: what you paid the supplier, or what it cost to make.
• Shipping and packaging you pay, including free shipping you absorb.
• Payment processing fees, which are usually a share of the order value.
• Pick, pack and fulfillment fees if a warehouse or 3PL handles orders.
• An allowance for returns, refunds and discount codes.

Leave ad spend out. The formula exists to tell you how much ad spend each order can carry, so putting ads into the margin counts them twice. Leave out rent, salaries and software subscriptions too, because they do not grow with each order.

Fixed costs still matter. They are paid from the profit you make above break-even, so a store whose ads only ever break even cannot cover them. That is why I treat break-even as the floor, not the goal.

How do discounts, shipping and returns change your break-even ROAS?

Small cost changes move break-even ROAS more than most store owners expect, because the margin sits under a division. This table runs the same example store through three common changes.

Source: arithmetic on the worked example above, using break-even ROAS = 1 ÷ margin. Payment fees stay at 3% of the order value.

A discount on every order pushes break-even from 2.22 to 2.55. A campaign that was profitable at full price can lose money all week during a sale while its ROAS still looks healthy. Break-even should be rechecked before a promotion starts, not after it ends.

The same logic works in your favor. A lower product cost or a better shipping rate brings break-even down, which gives the bid strategy more room to compete for clicks. Margin work often helps ROAS more than any bid change.

How do I use break-even ROAS to judge a Google Ads campaign?

I compare each campaign’s ROAS with the client’s break-even ROAS, not with an industry average. A ROAS of 3 is a loss for a store with a 25% margin and a profit for one with a 60% margin, as the margin table shows. A benchmark cannot tell you which of those you are.

Before that comparison means anything, I check the conversion tracking. I confirm that GA4, Google Tag Manager and enhanced conversions record each real sale once. If purchases are counted twice, reported ROAS looks better than it is, and a losing campaign can appear to clear break-even.

Then I judge campaigns one by one. An account total mixes brand search, remarketing and new customer campaigns, and each of those behaves differently. A healthy total can hide one campaign that loses money every day.

What happened when I checked real accounts against break-even?

Two published case studies make the point well. The ROAS figures below come from those pages, and the margin math is mine.

What did a starting ROAS of 1.5x mean for a signage company?

A local signage company came to us at a ROAS of 1.5x, according to the signage case study. A 1.5x return only covers costs if the margin before ads is about 67% or higher, because 1 ÷ 1.5 = 0.67. Unless the margin was that high, the account was spending more to win sales than those sales earned.

The case study describes a full rebuild. It included a search term and negative keyword audit, campaigns rebuilt around services like vehicle wraps and business signs, and tracking checked so it counted qualified leads and purchases. ROAS reached 7.35x within the first month of the restructure, as the same page reports. That return clears break-even at any margin above about 14%.

Why do I still check margins when ROAS looks high?

The CANA Wine Company account turned $10,214.37 of ad spend into $177,209.41 of tracked conversion value over 120 days, a ROAS of 17.35. On paper, that clears break-even at any margin above about 6%. The case study is careful about what the number is: Google Ads reported value, brand search included, and revenue rather than profit.

Campaign ROAS in that account ranged from 7.58 to 27.05, and budgets are split by margin and intent rather than product type, per the same page. Splitting budgets that way means each campaign can be judged against the margin of what it sells.

How do I turn break-even ROAS into a target ROAS?

Break-even ROAS is the floor, so your target ROAS should sit above it. Google describes the target as the average conversion value you want for each dollar of ad spend, entered as a percentage. A break-even of 2.22 becomes 222% in the bid strategy settings.

To build profit into the target, subtract the profit share you want from your margin, then divide 1 by what is left. The example store has a 45% margin. If it wants 15% of revenue left as profit after ads, the ads can use 30%, so the target is 1 ÷ 0.30 = 3.33, or 333%.

Setting the target at break-even tells Google that zero profit is acceptable. Google changed how budget-limited campaigns bid from 17 August 2026. Campaigns that are limited by budget and use a target-based bid strategy now deliver more consistently toward the target, per Google’s help page on the change. A break-even target in that situation is more likely to deliver close to break-even.

The order I follow is fixed. Accounts with enough conversion data run on Maximize conversion value with no target until ROAS has been stable for about 30 days. Then I switch to target ROAS and push the target up by 15% to 20%, keeping it above break-even. I cover that routine in my guide to setting and raising target ROAS.

Can a campaign run below break-even ROAS on purpose?

Sometimes, but only with a reason you can measure. Break-even ROAS here is based on the first order. If customers come back and buy again, a first sale below break-even can still pay off. That only holds if your repeat purchase data proves it.

When a client’s goal is new customers, I do not push live campaigns back into learning to chase them. I leave the existing campaigns as they are and test new customer acquisition in a separate campaign that excludes the existing customer list. The test gets its own budget and its own break-even judgment, and the profitable campaigns keep running.

Brand campaigns sit at the other end. People searching for your name were already looking for you, so brand ROAS can flatter the account total. I keep brand and non-brand campaigns apart and judge each against break-even on its own. The way I structure this is covered in my guide to ecommerce Google Ads.

Can Google Ads report profit instead of revenue?

Partly. Google Ads can report gross profit if you send conversions with cart data and add cost of goods sold to your Merchant Center feed. Google says this lets the account generate extra metrics based on gross profit for supported campaigns.

Those are reporting metrics. Google’s page presents them as insight for decisions such as bidding more on products that lead to higher value purchases. It does not describe a profit bid strategy. The item IDs in your cart data also need to match the id attribute in your Merchant Center feed exactly.

Until that is set up, break-even ROAS does the same job with a calculator and your own cost data. It is less automated, but it works on any account, including ones that do not sell through Merchant Center.

FAQs

What is a good break-even ROAS?

There is no good or bad break-even ROAS, only your own. It comes straight from your margin: a 50% margin breaks even at 2.0 and a 25% margin at 4.0. A lower break-even gives you more room to bid for traffic. If yours is high, better pricing, bundles or supplier costs will help more than any bid change.

Should ad spend be included in the profit margin?

No. Break-even ROAS works out how much ad spend each order can carry, so the margin must be measured before ad spend. If you subtract ad costs first, you count them twice and the result comes out too high. Include product cost, shipping, payment fees and returns, and leave advertising out.

What is the difference between break-even ROAS and target ROAS?

Break-even ROAS is the point where ads make zero profit. Target ROAS is the goal you give Google’s bid strategy, entered as a percentage of conversion value per dollar spent. The target should sit above break-even so each sale leaves some profit after the ad that won it. I never set a target at break-even.

How often should you recalculate break-even ROAS?

Recalculate it whenever a cost per order changes: supplier prices, shipping rates, payment fees or your return rate. Also run it before any sale or discount, because a discount cuts the margin on every order. If nothing changes, a check every quarter is a sensible habit for most stores.

What break-even ROAS do you need with a 30% margin?

A 30% margin gives a break-even ROAS of 1 ÷ 0.30 = 3.33, which is 333% as a Google Ads target ROAS. Every $1 of ad spend must bring in at least $3.33 in sales before the campaign stops losing money. Any profit you want has to come from a target above that level.

Does break-even ROAS work for lead generation?

It works when your conversion values reflect real money. Google’s value-based bidding guidance says values can be revenue or a proxy such as a lead score. If each lead carries an honest value based on how many leads become paying customers, the same formula shows the floor. With guessed values, the result is a guess too.

Why does my ROAS look profitable when my bank account does not?

Usually because reported ROAS is revenue, not profit, and it can be inflated. Duplicate conversion actions, brand search and costs left out of the margin all make ROAS look better than reality. Check that each sale is counted once, judge brand and non-brand campaigns apart, and compare ROAS with a break-even built from every cost per order.

What should you do next with your break-even ROAS?

Work out your margin per order, run it through the calculator and write the break-even number next to each campaign’s ROAS. Campaigns below it need fixing or pausing. Campaigns well above it may deserve more budget.

If you would rather have someone else run those numbers, this is how I judge every account I manage. See how I work as a freelance Google Ads specialist, read more Google Ads guides on the blog, or ask for the audit below.

How this post was written: drawn from Ishant Sharma’s own account work and the published case studies linked above, researched against current Google Ads documentation, drafted with AI assistance and checked against the sources before publishing.