Payment Gateway Cost for Enterprise
Quote-only economics, multi-acquirer routing, scheme-fee normalisation, and where the optimisation work actually lives at this scale.
At $50M+/yr GMV, the markup you negotiate matters less than authorisation rate and scheme-fee transparency. Adyen, Worldpay and Checkout.com publish no US rate card, so the markup over interchange is whatever your quote says. Ask for interchange plus scheme fees passed through at cost, plus a stated markup, so quotes from different acquirers can be compared line by line. Then compare authorisation rates on your own traffic: every percentage point of approvals on $500M of attempted volume is $5M of revenue, which is usually worth more than the markup itself.
What changes at enterprise scale
- Quote-only by default. Stripe and Braintree both offer custom or interchange-plus pricing to large merchants on request.
- Multi-acquirer routing: an orchestration layer (Spreedly, Primer, Gr4vy, or in-house) routes each transaction to the cheapest acquirer with the best authorisation rate per BIN.
- Scheme-fee normalisation: Visa and Mastercard scheme fees are a separate layer from interchange. Flat-rate vendors bundle them into one rate; interchange-plus quotes should list them as pass-through.
- Local acquiring: an acquirer licensed in the issuer's own market can process cross-border cards as domestic, which is where much of the auth-rate difference between acquirers comes from. Ask each bidder which markets they acquire in locally.
- Treasury and liquidity management: settlement currency, payout timing, and held-balances all become material P&L items.
Adyen vs Worldpay vs Stripe at enterprise scale
On published numbers there is nothing to compare: all three quote per merchant, and Stripe moves large merchants to custom pricing. Run the comparison on your own data. Send each bidder the same RFP, ask for an interchange-plus-plus quote, and if you can, route a test slice of live traffic through each to measure authorisation rates before committing.
The optimisation levers that matter at this scale
- Authorisation-rate optimisation per issuer per geography. A 1pp lift on $500M is $5M of recovered revenue, not cost.
- Network tokenisation (Visa Token Service, Mastercard Digital Enablement). Reduces fraud-flag declines.
- Account updater services to keep customer-saved cards current, so renewals do not fail on expired or reissued cards.
- Multi-acquirer routing for resilience and cost. Cheapest-with-acceptable-auth-rate routing per transaction.
- Currency-of-settlement strategy: settle locally to avoid FX margin on every transaction.