USD Coin (USDC)

USD Coin: what it does and who uses it

USD Coin, which you'll often see written as USDC, is a stablecoin, a type of crypto token intended to stick close to one US dollar. It launched in 2018 through a partnership between Circle and Coinbase, though it's Circle alone that runs it today. Unlike assets such as Bitcoin or Ethereum, USDC isn’t built to climb over time. Its job is to hold steady.

The whole idea is for it to be uneventful, and that's done on purpose. USDC gives traders a place to keep funds pinned to the dollar without moving back to their bank, avoiding days of waiting. Or, for someone living in Argentina or Turkey, it's a way to keep money in dollars if opening a regular account just isn't possible. As a freelancer in Lisbon, you might want to bill a US client and get paid in minutes, any day you choose.

USDC also acts as the dollar side of countless DeFi lending pools and exchanges, where everything is valued against a stable reference point. Want more on the context? Our guide on what stablecoins are lays out the basics.

How the dollar peg is kept: reserves, redemption and attestations

USDC doesn’t rely on algorithms or wishful thinking to hold its value. Circle maintains each token is matched by reserves, these are cash and short-term US government securities. Anyone who meets their criteria (usually large institutions) can redeem a USDC for a dollar. That redemption option matters, because it brings arbitrageurs in to buy if USDC slips much below a dollar and redeem for a full dollar, nudging the price up again.

The real question is whether Circle's reserves always exist as promised. To address that, Circle releases attestation reports from an outside accounting firm. These reports check the reserve balance as of a particular day. An attestation isn't the same as a full audit, so treat it as a single moment's check, not a cross-your-heart guarantee. For more on how these reports work, see our proof of reserves piece.

Individual users tend to buy or sell USDC through an exchange instead of redeeming directly with Circle. The price you see there moves with the market, though most of the time it only drifts a penny or two from the dollar.

Where USDC lives: tokens across several blockchains

One thing that sets USDC apart, not having its own blockchain. Instead, it’s available as a token on several networks, such as Ethereum, Solana and others. The same dollar value exists simultaneously on each of those systems. Sending USDC along Solana’s rails usually costs far less than moving it through Ethereum, especially when that network is congested. For smaller amounts, that difference is sometimes a deciding factor.

Choosing the correct network is critical. A USDC address might look very similar across chains, but get that step wrong and your transfer could vanish or freeze with no way back. So, it pays to understand token standards first, and to send a test amount before risking more.

If you compare USDC to Tether, which is the other major dollar stablecoin, you’ll find that USDC comes from a single US firm with a tilt toward more public reporting. Our USDT and USDC comparison takes you through what matters day to day.

What can move the USDC price

For USDC, the story isn’t about trying to outpace the dollar, but about why it ever slips off track. Nearly every time, it’s about concerns over reserves or about the bank that keeps those reserves safe. For example, after Circle revealed in March 2023 that some funds were kept in the now-failed Silicon Valley Bank, the price briefly dipped below a dollar. Price stability returned soon after.

Most days, USDC barely stirs. Over the last 30 days, the price has moved by -0.02%, with a low of 0.9987 USD and a high at 1.00 USD this past year. When those numbers are narrowly spaced, the stablecoin is working as intended. If you see a range that's much wider, caution is advised.

Minor deviations also stem from straightforward causes: thin trading on a lesser-known exchange, a surge of sell orders, or exchanging to another currency. If 0.9997 USD appears in a currency that’s not the US dollar, any mismatch is often just the result of the exchange rate at that moment.

How to buy USDC and understand the true cost

Buying USDC is possible on all the major exchanges. You can pay from your bank, use a debit card, or swap another crypto. Usually, you’d deposit funds, look for the USDC market, and place your order. Use a market order for instant purchase, or a limit order if you want to set your price and wait, there’s a guide on market and limit orders if you’re weighing those choices.

What you pay is made up of a few parts. There’s the trading fee, charged as a percent of the amount you’re exchanging. Then comes the spread: the gap between buy and sell quotes, which may not show up as a separate line but instead be rolled into the quote. Last, the withdrawal fee, this depends on the network and is taken when sending USDC out to your own wallet.

Coinbase is direct about its process, while Kraken gives you both a straightforward buy option and an advanced trade screen with maker and taker rates displayed. Paying in euros? Both Bitvavo and Bitpanda are worth considering. To break down fee structures across exchanges, there’s our exchange fees guide, and for head-to-head numbers take a look at Kraken vs Coinbase. USDC’s liquidity means spreads are tight in most cases, but always double-check what you’ll actually receive before you finalize anything.

How to store USDC safely

Leaving USDC on your exchange means that company controls the access keys, while you hold a claim on your coins. This is handy if you’re an active trader, but your funds are as safe as the exchange itself. With your own wallet, you hold the private keys and no one else can freeze or misdirect your funds without your involvement. If you want a breakdown, our custodial and non-custodial wallets guide gives the details in plain language.

You might find that keeping small, frequently-traded amounts on the exchange and transferring larger, longer-term holdings into a wallet you fully control works best. Make sure you write your wallet’s seed phrase on paper, kept safe and offline. Don’t ever enter your seed into any website, not even those that look official. Never share it; support staff should never ask.

There’s another point when it comes to USDC: Circle, as the issuer, can block tokens at specific addresses on instruction, say, from regulators. That doesn’t affect day-to-day transfers, but it is a technical difference to be aware of compared to Bitcoin and some other coins.

Possible risks and tax points (not advice)

The primary risks you face are USDC diverging from the dollar, trouble at Circle or its banking partners, regulatory shifts, or the much-discussed security risks, think phishing or sending coins to the wrong chain. Unlike savings, stablecoins don’t earn anything natively. If an app promises high yields on USDC, look into how it delivers those returns, and who bears losses if they happen.

Don’t forget: USDC is not a bank deposit and doesn’t carry deposit insurance, and while its dollar link is tight, it’s still crypto. Prices in broader crypto markets can be volatile. Treat USDC as a payment or holding tool, not savings in the usual sense.

On tax: the right approach depends entirely on your country's rules. In many places, swapping USDC for another asset, or spending it, may mean tax is due, even for small changes in value. Some authorities want you to report even just holding crypto. It’s sensible to log what you bought, what you sold, and when, and check with a qualified local tax adviser for your obligations. We outline our approach to collecting and checking pricing in our How we compare section.