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ROAS Leak Calculator

Enter 7 details about a campaign and see how much of your reported ROAS is real profit — and how much is leaking to fees and COGS.

How the calculator works

Most dashboards report ROAS as revenue divided by ad spend — which ignores agency fees, cost of goods, fulfillment, payment processing, and refunds. Enter your numbers and this calculator shows Naive ROAS, POAS (real profit on ad spend), and your ROAS Leak percentage: how much of the reported return is not actually profit.

Find your real ROAS

ROAS Leak Estimate

See how much of your ad spend return is real profit

Your campaign numbers
$10,000
500200,000

Total revenue attributed to the ad spend

$5,000
100100,000

Media spend: Facebook, Google, etc.

$500
020,000

What you pay an agency or freelancer to run the campaigns

35 %
090

Cost of goods/materials as a % of revenue

$500
020,000

Packing + shipping

3 %
06

Card/PayPal fees, typically ~2.9% + $0.30

$200
020,000

Revenue refunded to customers

Results
Naive ROAS2.00x1.82x incl. agency fee
Net profit$0$5,500 gross
POAS0%profit on ad spend
ROAS leak100%Break-even ROAS: 1.54x
Despite a 2.00x ROAS, you're losing money once COGS, fees, and agency cost are counted. Cut media/agency spend or fix margin before scaling.
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Have questions?

Frequently Asked Questions

Answers about ROAS, POAS, and ad-spend profit leak

It shows the gap between your Naive ROAS (revenue ÷ ad spend, the number most dashboards show) and your real profit after agency fees, cost of goods, fulfillment, payment processing, and refunds. A campaign can show a great ROAS and still lose money once those costs are counted — this calculator surfaces that gap.
Naive ROAS is revenue divided by ad spend only. Blended ROAS divides revenue by ad spend plus your agency or management fee — the true cost of acquiring that revenue through a managed campaign.
POAS (Profit on Ad Spend) is your net profit — after COGS, fulfillment, payment processing, and refunds — divided by your total media cost (ad spend plus agency fee). Unlike ROAS, POAS can go negative, which is exactly when it matters most.
ROAS Leak is the percentage gap between your Naive ROAS and your POAS. A 100% leak means your apparent return is fully absorbed by costs the ROAS number never counted — you're at break-even or worse despite a healthy-looking ROAS.
The calculator runs entirely in your browser — nothing is sent anywhere until you choose to email yourself the full PDF report, which requires your name, company, and email.

Ready to stop the leak?

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