2026 Tax Figures API API alternatives
12 other finance APIs compared on authentication, HTTPS, CORS and documented endpoints.
| API | Auth | HTTPS | CORS | Endpoints |
|---|---|---|---|---|
| 2026 Tax Figures API | No auth | Yes | Unknown | — |
| Stripe | API key | Yes | Unknown | 446 |
| SEC EDGAR Data | No auth | Yes | Yes | — |
| Plaid | API key | Yes | Unknown | 198 |
| Fed Treasury | No auth | Yes | Unknown | — |
| Razorpay IFSC | No auth | Yes | Unknown | — |
| Klarna | API key | Yes | Unknown | — |
| Citi | API key | Yes | Unknown | — |
| Zoho Books | OAuth | Yes | Unknown | — |
| FRED | API key | Yes | Yes | — |
| Polygon | API key | Yes | Unknown | 10 |
| MercadoPago | API key | Yes | Unknown | — |
| Open Banking - Payments initiation service | No auth | Yes | Unknown | 12 |
Stripe
FinancePayment processing, subscriptions, and financial management
API key446 endpoints
SEC EDGAR Data
FinanceAPI to access annual reports of public US companies
No authCORS
Plaid
FinanceConnect with user's bank accounts and access transaction data
API key198 endpoints
Fed Treasury
FinanceU.S. Department of the Treasury Data
No auth
Razorpay IFSC
FinanceIndian Financial Systems Code (Bank Branch Codes)
No auth
Klarna
FinanceKlarna payment and shopping service
API key
Citi
FinanceAll Citigroup account and statement data APIs
API key
Zoho Books
FinanceOnline accounting software, built for your business
OAuth
FRED
FinanceEconomic data from the Federal Reserve Bank of St. Louis
API keyCORS
Polygon
FinanceHistorical stock market data
API key10 endpoints
MercadoPago
FinanceMercado Pago API reference - all the information you need to develop your integrations
API key
Open Banking - Payments initiation service
FinanceOpen Banking - Payments initiation service
No auth12 endpoints