PayPal Business Checkout vs. Mercury Treasury & ACH Invoicing — Interactive Cost & Performance Calculator
Compare PayPal Business Checkout vs Mercury Treasury & ACH Invoicing side-by-side. Use our interactive calculator to estimate exact monthly costs, savings, and performance trade-offs at your scale.
PayPal Business Checkout
Best for: Consumer e-commerce & PayPal wallet conversion lift
Mercury Treasury & ACH Invoicing
Best for: B2B SaaS contracts, agency retainers & zero-fee founder banking
Side-by-Side Technical & Commercial Breakdown: PayPal Business Checkout vs. Mercury Treasury & ACH Invoicing
| Dimension | PayPal Business Checkout | Mercury Treasury & ACH Invoicing |
|---|---|---|
| Platform | PayPal | Mercury |
| Base Percentage Fee | 3.49% | 0% |
| Fixed Fee per Order | $0.49 | $0.00 |
| International Card Surcharge | +1.5% | +0% |
| Merchant of Record (Global VAT/Tax) | No (Merchant manages tax) | B2B ACH / Wire ($250 Signup Bonus) |
| Payout Schedule | Instant to PayPal balance | Same-day ACH / Instant Wire |
| Best Use Case | Consumer e-commerce & PayPal wallet conversion lift | B2B SaaS contracts, agency retainers & zero-fee founder banking |
Frequently Asked Questions
Which is more cost-effective in 2026: PayPal Business Checkout or Mercury Treasury & ACH Invoicing?
It depends on your workload volume. Use the interactive sliders above to model your exact monthly scale. PayPal Business Checkout (Consumer e-commerce & PayPal wallet conversion lift) and Mercury Treasury & ACH Invoicing (B2B SaaS contracts, agency retainers & zero-fee founder banking) have different unit economics that cross over as volume scales.
When should an engineering team choose PayPal Business Checkout over Mercury Treasury & ACH Invoicing?
Choose PayPal Business Checkout when your primary priority is: Consumer e-commerce & PayPal wallet conversion lift. Choose Mercury Treasury & ACH Invoicing when you prioritize: B2B SaaS contracts, agency retainers & zero-fee founder banking.