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Free toolUpdated: 2/4/2026Read time: ~4 min

Break even ROAS calculator

This break even ROAS calculator helps ecommerce operators and dropshippers find the exact ROAS required to break even, plus the maximum CPA they can afford, based on real costs.

Calculator

Inputs
Adjust values to see ROAS and CPA update instantly.
ROAS uses your selling price. CPA uses net revenue after VAT.
How it works
  • Break-even CPA = net revenue (after VAT) minus non-ad costs (product, shipping, fees, other).
  • Break-even ROAS = selling price divided by break-even CPA.
  • The 10%, 20%, 30% targets assume you want that profit as a percentage of your selling price.
ROAS BREAK EVEN
1.46
10% profit:1.71
20% profit:2.07
30% profit:2.61
CPA BREAK EVEN
54,67 €
This is the maximum acquisition cost you can afford per purchase before you lose money.

What you get (ROAS + CPA)

In paid acquisition, the hard part is not launching campaigns. It is knowing when campaigns are actually profitable.

This calculator gives you two numbers you can use immediately: your break-even ROAS and your break-even CPA. That means you can make data-driven decisions without guesswork, questionable tactics, or margin-killing mistakes.

How to use it

Step 1: Enter real costs

Add your selling price, VAT, product cost, shipping, and any per-order fees. These numbers define your true profit baseline.

Step 2: Read the thresholds

Your break-even CPA is the maximum you can pay to acquire a customer. Your break-even ROAS is the minimum ROAS you need to avoid losing money.

How the math works

Most calculators only compare ad spend to revenue. That is rarely enough to reflect reality.

This break even ROAS calculator accounts for product cost, shipping, payment fees, and VAT. It then shows how your break-even point moves when you change variables such as AOV, shipping, or fees.

Interpretation
  • If your actual ROAS is below break-even, you are losing money on each purchase (before LTV effects).
  • If your actual ROAS is above break-even, you can decide whether to stabilize or scale based on the profit targets shown.
  • If you want to reduce SaaS costs across your stack, you can compare with Ecom Efficiency pricing.

FAQ

What is a break even ROAS calculator?

A break even ROAS calculator tells you the minimum ROAS required to avoid losing money, based on your selling price, VAT, and per-order costs.

What is break-even CPA?

Break-even CPA is the maximum acquisition cost you can afford per purchase. Above that number, the sale becomes unprofitable.

Should I use selling price or net revenue for ROAS?

Ad platforms typically calculate ROAS using the selling price (gross conversion value). This calculator uses selling price for ROAS and net revenue (after VAT) for CPA.

Why include VAT, fees, and shipping?

Because real profitability depends on your true cost per sale. Leaving out VAT, processing fees, or shipping often makes ROAS benchmarks inaccurate.