11 September 2026 · Payments · 5 min read
Our price tracker flagged something last week: Stripe's US card rate moved from 2.9% + $0.30 to 3.1% + $0.30. I'd already had Adyen's interchange++ pricing loaded from a payment-fee-calculator update, so I ran the two side by side properly instead of just noting the headline numbers. What I expected was the usual "Adyen wins once you're big enough" crossover point. What I got was a flat line — Adyen's own published rate beats Stripe at every volume I tested, not just the big ones. That's not really a pricing story. It's a why-doesn't-everyone-switch story.
| Provider | Model | Rate |
|---|---|---|
| Stripe | Flat blended rate | 3.1% + $0.30 per US card charge |
| Adyen | Interchange++ (cost-plus) | $0.13 processing fee + pass-through interchange & scheme fees |
Stripe's number is a single quote card — one rate covers every card, and you never see what's underneath it. Adyen doesn't quote a blended percentage at all, because interchange++ isn't one. You pay Adyen a small, fixed markup ($0.13) on top of whatever the card network and issuing bank actually charge for that specific card — a Visa debit card costs less to move than a rewards credit card, and Adyen passes that difference straight through instead of averaging it into one number. On Adyen's own pricing page, the all-in result for typical European consumer cards works out to roughly 0.6–1.5% + €0.11. US and cross-border cards run higher, but Adyen doesn't publish a single US blended figure either — it's genuinely determined by your card mix, not a rate card.
Take a $50 average order, 1,000 orders a month — $50,000 in revenue, a fairly ordinary small-SaaS or e-commerce volume:
| Provider | Fee formula | Monthly fees | Effective rate |
|---|---|---|---|
| Stripe | 3.1% + $0.30/txn | $1,850 | 3.70% |
| Adyen (low end, 0.6%) | 0.6% + ~$0.12/txn | $420 | 0.84% |
| Adyen (high end, 1.5%) | 1.5% + ~$0.12/txn | $870 | 1.74% |
That's a $980–$1,430 monthly gap — $11,760 to $17,160 a year — on revenue most people would call small. I re-ran it at 50 orders a month ($2,500 revenue, closer to a side project than a business) expecting the gap to close or flip in Stripe's favor. It didn't: Stripe comes to $92.50, Adyen's range is $21–$43.50. The fixed fee alone tells you why — Adyen's $0.13 beats Stripe's $0.30 per transaction before a single percentage point is even compared. There's no volume threshold in the fee math itself where Stripe becomes the cheaper option.
Because the crossover isn't in the math — it's in who gets access to the math. Stripe is self-serve: sign up, verify your business, and you're taking live payments in minutes with a dashboard, docs and support built for a solo developer. Adyen is built for merchants doing real, ongoing processing volume — you apply, go through underwriting, and get a merchant account set up around your actual business, not a generic sign-up form. There's no published minimum, but Adyen's own positioning is explicit that it's aimed at mid-market and enterprise merchants, not a $2,500/month side project. A team that's small enough to run the $2,500 scenario above almost never gets to the point of asking Adyen for a quote in the first place.
That's the actual lesson, not "switch to Adyen." If you can get approved and you're processing enough to justify the integration and account-management overhead, interchange++ is a real, non-trivial amount of money left on the table by staying on a flat rate. If you're pre-revenue, testing a product, or just don't have the volume to make an enterprise sales conversation worth having, Stripe's 3.1% is the price of being able to start today. Both things are true at once.
Under a few thousand dollars a month in processing, or still validating the product: Stripe, and don't spend time chasing an Adyen quote you probably can't get anyway. Once you're consistently processing tens of thousands a month and have the engineering time for a second integration: it's worth requesting Adyen pricing for your actual card mix — the gap in the table above is the floor, not the ceiling, since Stripe's 3.1% also stacks a further +1.5% for international cards and +1% for currency conversion that Adyen prices separately and often lower. If tax handling matters more to you than the raw processing rate — you're selling software worldwide and don't want to register for VAT in a dozen countries — that's a different trade-off entirely, covered in Stripe vs PayPal vs Paddle.
New to usage-based pricing? Start with the free API-cost guides.
Host your checkout backend: DigitalOcean — $200 free credit ↗ · Hostinger VPS ↗
Rates verified against Stripe's and Adyen's official pricing pages via our automated price tracker, last checked 2026-09-10. Reference estimates — actual interchange varies by card network, issuing bank, card type and region; Adyen quotes are not a fixed rate card and require a merchant-specific quote. Confirm current pricing before budgeting.