Break-Even ROAS Calculator

How to Calculate Break-Even ROAS

Work through the inputs in order to build the figure from your own numbers.

1. Enter your revenue or average order value.
2. Enter the cost of goods sold for one order.
3. Add shipping and fulfillment cost per order.
4. Add the payment processing percentage and any fixed transaction fee.
5. Add other variable costs such as commissions, packaging or a returns allowance.
6. Read the break-even ROAS — the threshold your actual ROAS must beat.

The calculator sums every cost you enter into total variable costs, subtracts them from revenue to find the contribution, and divides revenue by that contribution. Leave a field at zero if it does not apply.

Break-Even ROAS vs Regular ROAS

Regular ROAS measures actual advertising performance — the revenue a campaign produced divided by what it cost. Break-even ROAS estimates the minimum revenue-to-ad-spend ratio required to cover the cost structure you entered. One is a result; the other is a hurdle.

Comparing the two is the point. If your campaign ROAS from the ROAS calculator sits above your break-even ROAS, advertising contributes positively before overhead. If it sits below, each scaled order destroys contribution. To plan the ROAS you need for a target profit, use the target ROAS calculator, and for the broader evaluation read what a good ROAS means for your business.

Common Break-Even ROAS Mistakes

• Using gross revenue without costs. Revenue divided by ad spend is regular ROAS, not break-even ROAS. Break-even needs the costs that scale with each order.
• Ignoring processing fees. Percentage and fixed payment fees reduce contribution and quietly raise the ROAS you need.
• Confusing revenue with profit. A high ROAS on a thin margin can still lose money; break-even ROAS is built from contribution, not revenue.
• Excluding meaningful variable costs. Shipping, packaging, commissions and returns all belong in the calculation.
• Using one margin for products with very different economics. A single break-even ROAS across a varied catalog hides products that drag the average down.

Why Product Margin Changes Break-Even ROAS

Break-even ROAS is the reciprocal of contribution margin, so margin drives the whole number. A 50% contribution margin gives a 2x break-even ROAS; a 25% margin gives 4x; a 10% margin gives 10x. The lower your margin, the more revenue each ad dollar has to produce just to break even.

This is why two campaigns with identical ROAS can have opposite profitability. A 3x ROAS on a 50% margin product is comfortably profitable; the same 3x on a 25% margin product loses money on every order. Always pair the ROAS you see with the margin that produced it, which you can check with the profit margin calculator.

What Costs Should You Include?

Break-even ROAS only sees the costs you enter, so include every cost that scales with an order:

• Cost of goods sold — the product cost you pay per unit.
• Shipping and fulfillment — pick, pack, postage and handling.
• Payment processing — percentage and fixed transaction fees.
• Commissions — marketplace or affiliate commissions per order.
• Packaging — materials specific to each shipment.
• Other variable transaction costs — returns allowances and per-order fees.

Fixed costs — rent, salaries, software subscriptions — do not belong here. They do not change with one more order, so they require a separate profitability analysis once advertising is covered.

Break-Even ROAS and CPA

Break-even CPA is the same number as the contribution before advertising, expressed as a currency amount rather than a ratio. It is the most you can spend to acquire one order and still break even on the costs you entered.

If your contribution is $45, your break-even CPA is $45. Spend less than $45 per order and advertising contributes positively; spend more and each order loses money. To turn that CPA into a target that preserves a chosen profit margin, use the target ROAS calculator.