Payment Gateway / PSP
Adyen and Modern Treasury both show up under the payment gateway category, but they solve slightly different jobs. Adyen uses pricing that starts at EUR 0.11 + scheme fee, while Modern Treasury runs on custom (sales-led) pricing. Both sit at moderate lock-in. Transparency lands at 3/5 versus 1/5. Adyen fits teams working on enterprise with $10M+ TPV needing global coverage, while Modern Treasury is a closer match when the job is ACH, wire, and RTP payment operations with real-time ledgering API. Worth noting: Adyen is explicitly not for solo projects; Modern Treasury is explicitly not for merchants who mainly need card acceptance. The honest trade-off: Adyen trades off on startup with <$1M TPV — minimum fees are high; Modern Treasury trades off on US-bank-focused, limited globally. On the plus side, Adyen highlights enterprise with $10M+ TPV needing global coverage, while Modern Treasury points to deep ACH, wire, RTP, FedNow coverage.
Quick take
Adyen is for enterprise with $10M+ TPV needing global; Modern Treasury is for ACH, wire, and RTP payment operations; decide on pricing model.
 Adyen | | |
|---|---|---|
| Category | Payment Gateway / PSP | Payment Gateway / PSP |
| Pricing Model | hybrid | custom |
| Entry Price | EUR 0.11 + scheme fee | — |
| Free Tier | No | No |
| Billing Complexity | medium | — |
| Developer Experience | 5/5 | 5/5 |
| Pricing Transparency | 3/5 | 1/5 |
| Lock-in Level | medium | medium |
| Migration Complexity | medium | — |
| Data Portability | CSV import/export recurring payment details | — |
| Enterprise | Available | — |
| GitHub Stars | 245 | 46 |
| License | MIT | MIT |
Medium — proprietary tokens, but CSV import/export under
Migration difficulty: medium
Data you keep: CSV import/export recurring payment details
API standard: Proprietary
Risk notes: Medium — proprietary tokens, but CSV import/export under
💡 Moderate effort required. Export data before canceling
Choose Adyen if your project is enterprise with $10M+ TPV needing global coverage, medium lock-in is an acceptable trade-off.
Not for: Solo projects
Choose Modern Treasury if your project is ACH, wire, and RTP payment operations with real-time ledgering API, you are prepared for a sales-led custom-pricing conversation, medium lock-in is an acceptable trade-off.
Not for: Merchants who mainly need card acceptance
Check each tool's dedicated page for deeper reviews, setup notes, and pros/cons.
Adyen uses pricing that starts at EUR 0.11 + scheme fee, and Modern Treasury uses custom (sales-led) pricing. The pricing models are different, so a direct cheaper-than comparison depends on your volume and usage pattern.
Our data puts Adyen at medium lock-in (proprietary tokens, but csv import/export under), and Modern Treasury at medium lock-in (payment ops saas, custom integrations). Migration is feasible but not trivial — budget time for re-integration, data export, and parallel running before cutover.
Both score 5/5 on developer experience in our data, so there's no clear winner on that axis. Adyen does edge ahead on pricing/docs transparency (3/5 vs 1/5), which can make evaluation faster.
Modern Treasury is a reasonable alternative to Adyen when your workload leans more toward platforms and fintechs running high-volume bank transfers and ledgering in the US than enterprise. The pricing model shifts too — Adyen is pricing that starts at EUR 0.11 + scheme fee, Modern Treasury is custom (sales-led) pricing — so expect the cost profile to change as well. One caveat: Modern Treasury is explicitly not for merchants who mainly need card acceptance, so check that constraint against your use-case before switching.
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