Affirm Merchant United States Fee Calculator
Calculate merchant rates for Affirm Adaptive Checkout (5.99%), 0% APR subsidies, and net payouts in USD.
5.99% + $0.30 merchant rate dynamically offering Pay in 4 or 3-36 mo financing.
Fee Wealth Leakage Radar & Profit Drag
Multi-Rail Arbitrage ("Switch & Save")
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Pass Fee to Client (Legal Surcharge Engine) Calculate zero-shortfall compliant markup & legal surcharge limits
• United States: Visa & Mastercard cap credit card surcharges at 3.00% (effective April 2023). Surcharging debit or prepaid cards is strictly illegal under federal operating rules.
• UK & European Union: Surcharging consumer debit and credit cards is prohibited under PSD2. B2B / corporate card surcharges remain permitted.
• Australia: Governed by RBA; surcharging is legally restricted strictly to the merchant's actual cost of card acceptance.