Stripe vs PayPal vs Square Processing Fees: How to Calculate Net Take-Home Pay

Every time a customer pays an invoice or completes an online checkout, payment gateways deduct transaction processing fees before transferring funds into your merchant bank account. These fees consist of two components: 1. A variable percentage fee (typically between 2.6% and 3.49%) which covers interchange and card network assessments. 2. A fixed per-transaction fee (typically between $0.15 and $0.49) which covers communication network authorization overhead. Comparing the four largest online providers for standard domestic transactions: - Stripe: 2.9% + $0.30 - PayPal Checkout: 3.49% + $0.49 - Square (Online): 2.9% + $0.30 - Shopify Payments: 2.4% to 2.9% + $0.30 (based on subscription tier)

A common mistake freelancers and digital agencies make is attempting to cover fees by simply adding 2.9% to their quote. For example, if you want $1,000 net, adding 2.9% ($29) results in an invoice of $1,029.00. When the client pays $1,029.00 via Stripe: Stripe fee = ($1,029.00 * 0.029) + $0.30 = $29.84 + $0.30 = $30.14. Your bank payout is $1,029.00 - $30.14 = $998.86. You lost $1.14! The mathematically sound Reverse Invoice Formula is: Invoice Amount = (Target Net Amount + Fixed Fee) / (1 - Percentage Fee Rate) Plugging in $1,000 with Stripe rates: Invoice Amount = ($1,000 + $0.30) / (1 - 0.029) = $1,000.30 / 0.971 = $1,030.18. When Stripe deducts 2.9% + $0.30 from $1,030.18: Fee = ($1,030.18 * 0.029) + $0.30 = $29.88 + $0.30 = $30.18. Net payout deposited into your bank: $1,030.18 - $30.18 = $1,000.00 exactly.

If your customer uses an international credit card or pays in a foreign currency, gateways assess supplementary fees: - International Card Surcharge: Gateways add an additional +1.0% to +1.5% for cards issued outside the merchant's home country. - Currency Conversion: If currency conversion is required, gateways assess an additional +1.0% to +2.0% spread on the exchange rate. Factoring these into cross-border contracts protects against unexpected 4% to 5% deductions on global enterprise invoices.