ASP.NET Core Guide Best Payment Solutions for ASP.NET Core (2026)
Compare the best payment solutions for ASP.NET Core. We review Stripe, PayPal, and more with .NET SDK integration patterns.
ASP.NET Core applications need reliable payment integration. We've evaluated payment providers with strong .NET SDKs and proper async support.
Why This Matters
.NET's type safety and async patterns make payment integrations robust. Proper SDK usage with dependency injection ensures maintainable, testable payment code.
Key Considerations
.NET SDKs
Most providers have official .NET SDKs. Use them for type safety and easier upgrades. Register in DI container.
Webhook Handling
ASP.NET Core handles webhooks easily. Verify signatures, use [FromBody] for JSON, and process async.
Async/Await
Use async methods throughout. Payment SDKs support async. Don't block on payment operations.
Configuration
Store API keys in appsettings.json or secrets. Use IOptions<T> pattern for typed configuration.
Testing
Use provider test modes. Mock SDK interfaces in unit tests. Integration test with sandbox accounts.
Our Recommendations
Stripe
Best Overall Excellent Support Official SDKStripe has excellent .NET SDK with full async support. Type-safe API, comprehensive features. 2.9% + 30¢. Industry standard.
dotnet add package Stripe.net 
Paddle
Best for Global Good SupportPaddle handles global taxes as Merchant of Record. Use their API with HttpClient. 5% + 50¢. Simplifies tax compliance.
Use Paddle API with HttpClient 
Braintree
Best PayPal Integration Excellent Support Official SDKBraintree (PayPal) has official .NET SDK. PayPal, cards, Venmo. Good for PayPal customers. Competitive rates.
dotnet add package Braintree 
Adyen
Best Enterprise Excellent Support Official SDKAdyen for enterprise payments. Official .NET SDK. Global payment methods, risk management. Volume pricing.
dotnet add package Adyen 
Square
Best Omnichannel Excellent Support Official SDKSquare for online + in-person payments. Official .NET SDK. Unified commerce platform. 2.9% + 30¢.
dotnet add package Square Quick Comparison
| Service | TypeScript | Edge | Free Tier | Setup Time |
|---|---|---|---|---|
| Stripe | none | — | N/A | 30 min |
| Paddle | none | — | N/A | 45 min |
| Braintree | none | — | N/A | 30 min |
| Adyen | none | — | N/A | 60 min |
| Square | none | — | N/A | 30 min |
Quick Start
[ApiController]
[Route("api/[controller]")]
public class PaymentController : ControllerBase
{
private readonly IStripeClient _stripeClient;
public PaymentController(IStripeClient stripeClient)
{
_stripeClient = stripeClient;
}
[HttpPost("create-intent")]
public async Task<ActionResult> CreatePaymentIntent([FromBody] PaymentRequest request)
{
var service = new PaymentIntentService(_stripeClient);
var intent = await service.CreateAsync(new PaymentIntentCreateOptions
{
Amount = request.Amount,
Currency = "usd"
});
return Ok(new { clientSecret = intent.ClientSecret });
}
}Common Integration Patterns
Stripe + ASP.NET Core
Stripe.net SDK with dependency injection and webhook handling.
Stripe + Azure Functions
Serverless payment processing with Stripe webhooks.
Braintree + PayPal
Braintree for cards with integrated PayPal checkout.