Marginflow
Free Break-Even ROAS Calculator
The exact ROAS your ads must beat to make a profit — plus your break-even CPA and the ROAS needed to hit any target margin.
Your numbers
$
$
$
$
Stripe, Shopify Payments, etc.
%
%
profit you want to keep, % of revenue
Break-even ROAS
1.65×
beat this to make a profit
Comfortable — even average ads can turn a profit here.
Contribution margin
60.5%
Max ad cost / order
$30.2
break-even CPA
ROAS for target
2.20×
15%
Ad budget / order at target
$22.72
spend up to this and still hit margin
Break-even ROAS = revenue ÷ gross profit before ads = 1 ÷ contribution margin. Above it you profit; below it, every ad dollar loses money — even if the ROAS looks 'fine'.
Marginflow
Know your break-even ROAS on every order, automatically.
Marginflow connects to Shopify and tracks real profit, margin, ROAS and POAS per order — with an AI analyst that flags the ads and products bleeding money. Free to start.
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