Where can you spend USDC?

USDC is the practical default for spending stablecoins, and the reason is coverage rather than any particular technical merit.

Why USDC dominates merchant checkouts

Payment gateways decide what merchants can accept, and USDC is enabled by default on nearly all of them. A merchant who installs a crypto checkout gets USDC support without making a decision about it. That compounding effect — every new integration adds USDC support automatically — is why the coverage gap between USDC and everything except USDT keeps widening at the point of sale.

Circle also invested heavily in native issuance across chains rather than relying on bridges. Native USDC on Base, Solana, Polygon, Arbitrum and others means a merchant can accept payment on a network where the fee is a fraction of a cent, without the counterparty risk of a wrapped asset. For small payments — a $12 domain renewal, a $20 API top-up — that is the difference between the payment making sense and not.

Choosing your network

This is the only decision that costs you money. USDC on Ethereum mainnet, USDC on Base and USDC on Solana are all worth a dollar; the transfer fee differs by orders of magnitude.

Use the cheapest network the merchant’s checkout offers. If the merchant offers only Ethereum mainnet and the payment is small, the gas may genuinely be worth reconsidering the purchase — or worth asking the merchant whether they can enable a layer 2, since most gateways make that a checkbox.

The mistake that actually costs people money

Sending to the right address on the wrong network. Every chain has its own USDC contract, and a transfer to a Base address routed over Ethereum mainnet does not arrive — it goes to an address that may or may not be controlled by anyone able to recover it.

Merchant checkouts state the network prominently for this reason. Read it, select the matching network in your wallet, and send a small test amount first if the payment is large. There is no support desk that can reverse a chain transfer.