If you've been exploring crypto payments for your business, you've almost certainly come across USDC. But what exactly is it, how does it work, and why should merchants care? This guide covers everything you need to know.

What is USDC?

USDC (USD Coin) is a dollar-backed stablecoin issued by Circle. Each USDC token is redeemable 1:1 for a US dollar, and the reserves are held in cash and short-duration US Treasury bonds. Unlike Bitcoin or Ethereum, USDC doesn't fluctuate in price — 1 USDC is always worth $1.

USDC is regulated and transparent. Circle publishes monthly attestation reports from a Big Four accounting firm verifying that reserves match or exceed the supply of USDC in circulation.

How does USDC maintain its peg?

USDC maintains its $1 peg through a combination of full reserve backing and arbitrage mechanics. When demand rises, Circle mints new USDC against deposited dollars. When holders redeem, Circle burns the tokens and returns dollars. Traders profit from any small deviation from $1, which keeps the price stable.

Full reserve backing — every USDC is backed 1:1 by cash and US Treasuries
Regulated issuer — Circle is a licensed money transmitter in the US
Monthly attestations — independent auditor confirms reserves
Arbitrage — market participants correct any price deviations

Which blockchains support USDC?

USDC is natively issued on over a dozen blockchains. Fivo supports 9 EVM networks: Ethereum, Polygon, Base, Arbitrum, Avalanche, Optimism, Linea, Unichain, Sonic. Thanks to Circle CCTP, customers can pay on any chain and the funds are automatically bridged to your receiving chain.

Why should merchants accept USDC?

No chargebacks — blockchain payments are final and irreversible
Instant settlement — receive funds in seconds, not days
Global reach — accept payments from customers anywhere with no FX fees
Low fees — Fivo charges just 0.5% on withdrawals, no monthly or per-transaction fees
Price stability — no crypto volatility since 1 USDC = $1

How to accept USDC on your website

With Fivo, accepting USDC payments takes a single script tag. Add the embed code to your checkout page, set an optional fixed amount, and your customers can pay with USDC from any wallet on any supported chain.

Fivo Widget Embed

<script async src="https://checkout.fivo.finance/v1/fivo.js"></script>

<fivo-button
  merchant-id="fivo_live_your-merchant-id"
  amount="25.00"
  currency="USDC">
</fivo-button>

That's it — two lines of code. No backend changes, no crypto libraries, no wallet management. Fivo handles wallets, cross-chain bridging, and settlement for you.

USDC vs other payment methods

Credit card processors charge 2.9% + $0.30 per transaction, hold funds for days, and expose you to chargebacks. Wire transfers cost $25-50 per transaction and take 1-5 business days. USDC payments settle in seconds on L2 chains with gas fees under $0.01, and Fivo charges only 0.5% when you withdraw.

Getting started

Ready to accept USDC? Create a Fivo merchant account — it takes under two minutes. A secure Circle wallet is generated automatically, and you can start accepting payments immediately. Check the Quick Start Guide for step-by-step instructions.

What Is USDC? A Complete Guide for Merchants