Payment Parameters
Key Formulas
Annual Cost by Payment Method
Cost Analysis Results
| Method | Cost / Transaction | Annual Cost |
|---|---|---|
| Cash | — | — |
| Credit Card | — | — |
| Debit Card | — | — |
| ACH Transfer | — | — |
| Cryptocurrency | — | — |
Cost Across Transaction Sizes
Shows how per-transaction cost changes with transaction amount at your current fee rates. Crossover points indicate where a different method becomes cheapest.
Model Assumptions
- Defaults reflect approximate U.S. online/API blended merchant pricing as of early 2026
- Compares hypothetical all-in shift to each method, not a mixed-tender business
- No volume discounts or tiered pricing — rates are constant regardless of volume
- Crypto fees model merchant payment processor fees, not native on-chain/gas fees
- Cash handling cost is a flat estimate including labor, counting, deposit, and security costs
- No chargeback, dispute resolution, or fraud prevention costs included
- No float, settlement timing, or equipment/POS terminal costs
- Single currency (USD) — no cross-border or currency conversion fees
- Annual cost = monthly × 12 with no seasonal volume variation
- For educational purposes. Not financial advice. Market conventions simplified.
Understanding Payment Processing Costs
How Payment Processing Works
Every time a customer makes a payment, multiple parties are involved in moving money from buyer to seller. For card payments, the process involves the cardholder's bank (issuer), the merchant's bank (acquirer), the card network (Visa, Mastercard), and the payment processor. Each party charges a fee, which is why card processing costs include both fixed and percentage-based components.
Cash avoids these intermediaries but introduces handling costs: counting, reconciliation, bank deposits, security, and shrinkage risk. ACH transfers move money directly between bank accounts through the Federal Reserve's Automated Clearing House network at lower cost than card networks. Cryptocurrency uses blockchain networks with merchant payment processors acting as intermediaries.
Fixed-Cost vs. Variable-Cost Methods
Fixed-Cost Methods
Cash and ACH charge flat fees regardless of transaction amount. A $10 transaction costs the same to process as a $1,000 transaction. This makes them cheapest for high-value transactions but relatively expensive as a percentage of small transactions.
Variable-Cost Methods
Credit cards, debit cards, and crypto charge a percentage plus a fixed fee. The per-transaction cost rises with transaction amount. At small amounts, the fixed fee dominates; at large amounts, the percentage dominates.
Choosing the Right Payment Method
The optimal payment method depends on your average transaction size, not your transaction volume (since volume multiplies all methods equally). Use the line chart above to identify crossover points — the transaction amounts where one method becomes cheaper than another.
- Small transactions (<$25): Cash and ACH often cheapest due to flat fees being lower than card minimums
- Medium transactions ($25–$200): Debit cards become competitive; credit card costs are moderate
- Large transactions (>$200): Percentage-based fees grow large; ACH and cash provide the most savings
Frequently Asked Questions
Disclaimer
This calculator is for educational and informational purposes only. It does not constitute financial advice. Payment processing fees vary significantly by processor, card network, merchant category, and negotiated terms. Always verify current rates with your payment processor before making business decisions.
