USDC (USD Coin) is a stablecoin pegged 1:1 to the US dollar, issued by Circle with over $75 billion in circulation. It's the most regulated and transparent stablecoin, and increasingly the preferred payment method for crypto-savvy customers. Here's how to start accepting it.
Why Accept USDC?
- Stable value: 1 USDC = $1, always. No Bitcoin-style volatility.
- Instant settlement: Funds arrive in your wallet in 2-15 seconds.
- On-chain settlement: Blockchain transactions are final, no reversals to dispute.
- Low fees: 1% flat with PYMSTR vs 2-5% with traditional processors.
- Global reach: Any customer worldwide can pay, no card network restrictions.
Option 1: Payment Links (No Code, 5 Minutes)
The fastest way to accept USDC. Create a payment link from your PYMSTR dashboard, set the amount and currency, and share the link with your customer. They click, sign in, and pay from their embedded wallet. You receive USDC directly in your wallet.
Steps:
- Sign up at dashboard.pymstr.com (5 minutes, no KYB)
- Sign up, a wallet is automatically created in your dashboard
- Create a payment link: set amount, select USDC, choose chains
- Share the link via email, website button, or QR code
- Customer clicks, signs in, pays. USDC arrives in your wallet
Option 2: API Integration (1 Day)
For deeper integration, PYMSTR's REST API lets you create payments programmatically, receive webhook notifications, and build custom checkout flows. Most developers complete integration in a single day.
API integration steps:
- Generate API keys from your dashboard
- Create a payment via POST /api/payments
- Redirect customer to the payment URL
- Receive webhook when payment completes
- See full documentation at docs.pymstr.com
How to Integrate USDC Into Your Website: Which Path Fits
Both routes above are full USDC integrations: the payment either way lands in your own wallet with the same 1% flat fee and the same checkout for your customer. The difference is who does the integration work. Payment links need no developer at all, so they are how most merchants integrate USDC on day one. The REST API is the path when you want USDC inside your own checkout flow, with webhooks driving your order system.
| Integration path | Time to first payment | Coding needed | Best for |
|---|---|---|---|
| Payment links | 5 minutes | None. Created in the dashboard, shared as link, button, or QR | Going live today: invoices, checkout buttons, one-off payments |
| REST API | About 1 day | One POST endpoint plus a webhook handler | Custom checkout flows, order-system automation, platforms |
Which Chains to Offer
USDC is available on 4 chains through PYMSTR: Ethereum ($2-10 gas, best for large transactions), Base ($0.05 gas, Coinbase ecosystem), Polygon ($0.01 gas, lowest fees), and Arbitrum ($0.10 gas, DeFi ecosystem). Offer multiple chains and let enforced payments ensure customers use the right one.
How Does the Checkout Work for Customers?
Customers who hold stablecoins sign in via social login (Google, Email, SMS, Apple) or connect an existing wallet (MetaMask, WalletConnect, Coinbase Wallet). PYMSTR creates an embedded wallet that ensures payment accuracy, the correct stablecoin, chain, and amount are enforced. No wrong-chain errors, no lost funds, and the wallet is fully recoverable by the customer.
Ready to start? Sign up at dashboard.pymstr.com and create your first payment link in under 5 minutes. No KYB, no contracts, no setup fees.
Add the stablecoin rail to your checkout.
Non-custodial. 1% flat. Stable-in, stable-out. Live in minutes, not months.