PayPal Fee Calculator
Model payment fee impact before scaling traffic so you protect net margin and break-even targets.
Ecommerce Profit Calculator
Basic Inputs
Price must be greater than 0.
Platform Commission
Platform CommissionPlatform commission can be a percentage (for marketplace fee rates) or a fixed amount per order.
Ads & Extra Costs
Results
Net Profit
$0.00
Gross Profit
$0.00
Selling price minus product cost (COGS)
Gross Margin
0.00%
Gross profit ÷ selling price
Net Profit Margin
0.00%
After shipping, fees, ads (if on), and other costs
ROAS guardrail
Contribution before ads is zero or negative — fix price or non-ad costs before scaling paid traffic.
Next steps
Save your assumptions, compare scenarios, and get updates when we publish new fee guides and calculator presets.
How to model PayPal fee impact
Use platform commission in percentage mode for blended domestic/international rates, or fixed amount mode when PayPal charges a flat per transaction plus percentage. Keep product and shipping constant so you isolate fee sensitivity.
- Micropayments vs standard pricing: switch modes instead of averaging blindly
- Currency conversion: reflect cross-border share in your blended %
- Refunds: if material, add an average refund reserve in other costs
PayPal vs bank payout view
Some teams enter net receipt after fees as selling price — that is valid if commission is set to zero. Do not also subtract PayPal in commission or you double-count.
What to do with the results
Compare gross margin (price vs COGS) with net profit margin after fees. If net margin collapses at your median order value, revisit free shipping thresholds and payment mix before scaling ads.