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Accept USDC Payments.

The most regulated stablecoin, issued by Circle. Accept USDC across 4 chains with 1% flat fees and instant settlement. Customers must already hold USDC. PYMSTR does not convert fiat.

1% flat
Fee
Circle
Issuer
None
Custody
On-chain
Settlement
//Why USDCoverview

Why USDC?

USDC is issued by Circle and backed 1:1 by US dollar reserves held in regulated financial institutions. It's the most transparent stablecoin with monthly attestation reports. Over $75B in circulation.

//Benefits4 primitives

USDC on PYMSTR.

01

Fully Backed & Audited

Circle publishes monthly attestation reports from Deloitte. Every USDC is backed by cash and short-term US treasuries.

02

Multi-Chain Support

Accept USDC on Ethereum, Base, Polygon, and Arbitrum. Your choice. Enforced payments prevent customers from sending on the wrong chain.

03

Institutional Trust

USDC is used by Coinbase, Visa, and major financial institutions. Your customers recognize and trust it.

04

1% Flat Fee

No conversion spreads, no monthly charges. 1% on every USDC transaction, regardless of volume.

//USDC questions4 answers

Short
answers.
No jargon.

USDC (USD Coin) is a stablecoin pegged 1:1 to the US dollar, issued by Circle. It's backed by cash and US treasury reserves with monthly Deloitte attestations. Over $75B in circulation.
PYMSTR supports USDC on Ethereum, Base, Polygon, and Arbitrum. You choose which chains to accept. Enforced payments prevent customers from using unsupported chains.
No. PYMSTR's social login (Google, Email, SMS, Apple) creates an embedded wallet automatically. Customers who already have wallets can connect those too.
Instant crypto settlements — USDC arrives in your wallet the moment the transaction confirms on-chain, typically 2-15 seconds depending on the chain (Base/Polygon/Arbitrum: ~2 sec; Ethereum: ~15 sec). No batching, no holdback, no T+3 wait. See /features/instant-settlement for the full breakdown.
More payment options
Why accept with PYMSTR
Build
Integrating USDC? See the APIOne POST creates a payment URL on any chain you accept. HMAC-signed webhooks for completion.
→

Start accepting USDC.

Non-custodial. Stable-in, stable-out. Funds settle directly to your wallet on-chain. Live in minutes, not months.