Free Break-Even ROAS Calculator
Break-even ROAS is 1 divided by the share of revenue left after every non-ad variable cost. Enter gross margin, payment fees, fulfillment, refunds, variable overhead and a profit target, and this free breakeven ROAS calculator returns the minimum ROAS to avoid losing money on ads and the ROAS needed to hit your margin goal.
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How to use the Break-Even ROAS Calculator
This calculator answers the planning question a basic ROAS report cannot: how much attributed revenue is needed before a campaign covers its variable economics.
What is breakeven ROAS?
Breakeven ROAS is the minimum return on ad spend a campaign needs before it stops losing money. A campaign at 3× ROAS looks healthy on the ad platform, but if your break-even ROAS is 3.5×, every sale it drives costs you money. Knowing the threshold turns ROAS from a vanity number into a profit test.
How to calculate breakeven ROAS
Enter gross margin (revenue left after product or service cost), then payment fees, fulfillment, a refund allowance and any other variable overhead, all as a percentage of revenue. The calculator subtracts those costs from gross margin to get the pre-ad contribution margin and divides 1 by it. With the example inputs, 65% gross margin minus 20% of costs leaves 45%, so break-even ROAS is 2.22×.
Use contribution margin, not gross margin
Only the share of revenue left after non-ad variable costs can fund acquisition and profit. Dividing 1 by gross margin alone skips fees, shipping and refunds and understates the ROAS you need.
Set a target ROAS for profit
Breaking even is a floor, not a goal. Add a desired profit margin and the calculator also returns the ROAS required to keep that margin after ads, plus the maximum share of revenue you can spend on advertising at break-even and at target.
Breakeven ROAS for ecommerce and dropshipping
Ecommerce and dropshipping stores carry product cost, payment processing, shipping and returns on every order, so their contribution margin can be thin and their break-even ROAS high. Run the calculator per product line if margins differ, since a single blended figure can hide unprofitable products.
Compare with reported performance
Use the ROAS calculator to work out current campaign ROAS and compare it with this minimum threshold. For paid search campaigns, the PPC ROI calculator adds ROI and break-even CPC, and the advertising-to-sales ratio calculator shows ad spend as a share of revenue.
Break-Even ROAS Formula
| Gross margin | Other variable costs | Available for ads | Break-even ROAS |
|---|---|---|---|
| 65% | 20% | 45% | 2.22× |
Break-Even ROAS Calculator FAQs
What is breakeven ROAS?
Breakeven ROAS is the return on ad spend at which a campaign neither makes nor loses money once product and variable costs are paid. Below it, every sale driven by ads loses money; above it, ads contribute profit.
How do you calculate breakeven ROAS?
Start with gross margin, subtract every other variable cost as a percentage of revenue (payment fees, fulfillment, refunds, variable overhead) to get the pre-ad contribution margin, then divide 1 by that margin. A 25% contribution margin gives a 4× break-even ROAS.
What is the breakeven ROAS formula?
Break-even ROAS = 1 ÷ pre-ad contribution margin, with the margin written as a decimal. Using 65% gross margin and 20% of other variable costs leaves 45%, so break-even ROAS is 1 ÷ 0.45 = 2.22×.
Is breakeven ROAS 1 divided by profit margin?
Yes, as long as the margin is the one left before advertising. Using gross margin alone ignores fees, fulfillment and refunds and gives a break-even ROAS that is too low. This calculator subtracts those costs first.
How do I calculate the ROAS needed for a target profit?
Subtract your desired profit margin from the pre-ad contribution margin and divide 1 by the result. With 45% contribution and a 10% profit target, 35% is left for ads, so the target ROAS is 1 ÷ 0.35 = 2.86×.
Does break-even ROAS work for ecommerce and dropshipping?
Yes. Enter gross margin after product cost, then payment fees, shipping or fulfillment and refunds as percentages of revenue. Dropshipping stores often have thinner margins, which pushes break-even ROAS up.
How do refunds affect minimum ROAS?
A refund allowance reduces contribution margin and increases the ROAS required to break even.
Is platform ROAS the same as profitable ROAS?
No. Platform ROAS depends on attribution, while profitable ROAS also depends on product and operating economics.