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Break-even ROAS Calculator

Find the ROAS you need before an ad campaign breaks even, based on margin and direct costs.

Break-even ROAS
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Quick Guide

Quick answer

Break-even ROAS Calculator: The Break-even ROAS Calculator estimates the minimum return on ad spend required before a campaign stops losing money. It is especially useful for ecommerce pricing and paid ads planning.

FormulaBreak-even ROAS = 1 ÷ gross margin as a decimal. If extra variable costs apply, use contribution margin after those costs.

The calculation uses the entered values only, so the result depends on accurate cost and revenue assumptions.

Worked exampleIf your product keeps 40% of revenue after direct costs, break-even ROAS is 1 ÷ 0.40 = 2.5. That means £1 in ad spend needs about £2.50 in revenue to break even.

A concrete example makes it easier to check whether your result is realistic.

Common mistakeDo not calculate break-even ROAS from selling price alone. Use the margin left after product cost, platform fees, payment fees and fulfilment costs when possible.

This is one of the easiest ways to misread the result.

How to interpret the result

If actual ROAS is below break-even ROAS, the campaign is likely losing money before overheads. If it is above break-even, the campaign may be profitable, but overheads and returns still matter.

Methodology

The calculator converts margin into a decimal and divides 1 by that margin. This gives the revenue multiple needed to cover ad spend at break-even.

Reviewed by CalcBeacon Editorial TeamCategory: Marketing / EcommerceUpdated June 2026Transparent formula and example

What this tool helps with

Use this calculator to find the minimum ROAS you need before a campaign stops losing money.

How it works

Formula

Break-even ROAS = 1 ÷ gross margin as a decimal. If extra variable costs apply, use contribution margin after those costs.

Example

If your product keeps 40% of revenue after direct costs, break-even ROAS is 1 ÷ 0.40 = 2.5. That means £1 in ad spend needs about £2.50 in revenue to break even.

What to check before relying on the number

Do not calculate break-even ROAS from selling price alone. Use the margin left after product cost, platform fees, payment fees and fulfilment costs when possible.

Practical Guide

Using this result in a real decision

Use this before scaling paid ads. It tells you the minimum ROAS target to watch, but it should be paired with profit, cash flow and conversion-rate checks.

What the result means

If actual ROAS is below break-even ROAS, the campaign is likely losing money before overheads. If it is above break-even, the campaign may be profitable, but overheads and returns still matter.

Before you act on it

  • Check that revenue and cost values cover the same time period or sale scenario.
  • Include fees, shipping, fulfilment, discounts or ad spend when they affect the decision.
  • Compare at least one conservative scenario, not only the best-case number.

Common mistake

Do not calculate break-even ROAS from selling price alone. Use the margin left after product cost, platform fees, payment fees and fulfilment costs when possible.

This page is for planning and education. It is not financial, tax, legal or marketplace-specific advice.

Frequently asked questions

Why does lower margin need higher ROAS?

Lower margin leaves less money from each sale to pay for ads, so the campaign needs more revenue per pound spent.

Should I include shipping and fees?

Yes, if they reduce the money left from each sale. Including them makes the break-even ROAS more realistic.

Tool guide

How to use this calculator well

Use this before scaling paid ads. It tells you the minimum ROAS target to watch, but it should be paired with profit, cash flow and conversion-rate checks.

For best results, use numbers from the same source and the same period. Mixing monthly costs with single-order revenue, or gross revenue with net cost, can make the result look better than it really is.

Best useCompare pricing, campaign, product or cost scenarios before making a decision.
Risk checkDo not calculate break-even ROAS from selling price alone. Use the margin left after product cost, platform fees, payment fees and fulfilment costs when possible.
Next useful stepOpen a related margin, ROAS, ROI or break-even calculator to test the same numbers from another angle.

Related tools

Use these calculators to continue the same decision path.

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