Detailed technical benchmark and comparison between Interswitch API and VelvPay API. Analyze pricing structures, verified webhooks, sandbox testing, authentication, and compliance for teams building in Nigeria.
Vend airtime, pay 3,000+ billers & process NIP transfers via Verve
Accept payments at 1% fees, built for Nigerian SMEs and freelancers
Interswitch API is best for nigerian enterprises, banks, fintechs, and businesses needing access to Interswitch's 3,000+ biller network, airtime vending, NIP instant transfers, and the Verve card network backed by Nigeria's oldest and largest payment infrastructure company.
VelvPay API is best for nigerian SMEs, freelancers, service-based businesses, and startups that want a simple, affordable payment gateway with local customer support, 1% transaction fees, built-in invoicing, and multi-channel payment acceptance (web, mobile, and in-person).
| Highlight | I Interswitch API | V VelvPay API |
|---|---|---|
| Authentication | OAuth 2.0 (Client ID + Secret Key from developer console) | API Key issued after merchant onboarding; passed as Bearer token or in request headers |
| Rate Limit | Not publicly specified | Not publicly documented |
| Sandbox Mode | ✓ Available | ✓ Available |
| Webhooks | ✓ Supported | ✓ Supported |
| API Services | Card Payments (Visa / Mastercard / Verve)Bank Transfer / Pay by TransferUSSD PaymentsVirtual Account Numbers | Card Payments (Visa / Mastercard / Verve)Bank Transfer / Pay by TransferUSSD PaymentsInternational / Multi-Currency Payments |
| Supported Regions |
| Fee Component | I Interswitch API | V VelvPay API |
|---|---|---|
| Local Transactions / Cards | Local transactions:1.5% capped at ₦2,000 (7.5% VAT applies) | Local transactions:1% per transaction with no hidden charges |
| International / FX Cards | Contact provider | International transactions:flexible rate (contact VelvPay for exact fees) |
| Free Tier / Trial Credits | Integration free | Contact provider |
| Setup & Monthly Fees | Contact provider | No publicly listed monthly subscription fee |
| Rates & Additional Terms |
| Same-day settlement available |
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