EURC: The Euro Stablecoin, and Why Arc Carries It

EURC is a stablecoin issued by Circle and designed to hold a value of one euro, backed one-for-one by euro reserves held at regulated financial institutions in the European Economic Area. It is the euro counterpart to USDC, the dollar stablecoin from the same issuer. For a European business it removes an assumption most payment guides quietly make: that the money you settle in has to be dollars.

This page covers Arc in its first weeks of mainnet. Where something is still settling we say so rather than guess, and we revise the page as the ecosystem fills in. Last reviewed: September 2026.

What is EURC, and who regulates it?

EURC is a token representing one euro, issued by Circle, the company behind USDC. Circle holds euro reserves and issues tokens against them; the token is worth a euro because the issuer will redeem it for one. Circle announced it on June 16, 2022 and launched it on June 30, 2022 as Euro Coin, ticker EUROC, initially on Ethereum, then retired that name and symbol in favour of EURC in a post dated September 22, 2023 — a rename on the existing token addresses, not a new token.

Vocabulary, since this page assumes nothing: a blockchain is a shared ledger of balances no single party can quietly rewrite; a wallet holds the key authorising transfers from your address; gas is the fee to process one. Start with what a stablecoin is if the category is new.

In the EU, EURC is issued by Circle Internet Financial Europe SAS, which holds an electronic money institution licence from the French prudential regulator, the Autorité de Contrôle Prudentiel et de Résolution. Circle announced that licence on July 1, 2024, calling itself the first global stablecoin issuer to comply with the EU's Markets in Crypto-Assets regulation, under which both USDC and EURC are issued as e-money tokens; a further French authorisation covering crypto-asset services rather than issuance was reported in April 2026. MiCA obliges an e-money token issuer to hold full reserves and to redeem at par, on demand, at the holder's request. Circle's transparency reporting states EURC is backed 100% by euro held at regulated EEA institutions, attested monthly by a Big Four accounting firm separately from USDC.

Why would a business want a euro stablecoin?

Because currency exposure is a cost, and holding dollars you did not intend to hold is a position, not a payment method. A company invoicing, paying and filing in euros has no reason to route settlement through USD and back: each conversion pays a spread, and the dollars in between are unhedged while the money is in transit.

The second reason cuts against the euro token as often as for it. Under the EU's Instant Payments Regulation, euro-area payment service providers have had to receive instant euro credit transfers since January 2025 and to send them since October 2025, at no more than the price of a standard transfer. Domestic euro money already moves in seconds for near-nothing. What EURC addresses is euro value that has to cross a border, settle against another currency, or sit inside a programmable system. For a euro payment between two European bank accounts, use the bank.

How does EURC differ from USDC?

Same issuer, same mechanics, different reserve currency, very different scale. Circle's transparency page showed €395.9 million of EURC in circulation against $73.7 billion of USDC, both as of August 27, 2026, where the current figures also sit — EURC is well under one percent of the dollar token's size. Everything downstream follows: fewer venues quote it, thinner order books, wider spreads on large conversions.

That is the trade-off: currency alignment gained, liquidity lost. For a firm with euro obligations moving moderate sums, alignment usually wins. For someone moving size who will convert to euros anyway, the dollar token is often cheaper even in Europe — test it against your own amounts. The dollar side is in what USDC is.

What is StableFX, and how does onchain FX work?

Arc — the Layer-1 blockchain Circle launched on September 16, 2026 — includes an onchain FX engine called StableFX. Circle's developer documentation describes it as an institutional stablecoin FX engine: a taker requests a quote for a pair and amount, liquidity providers compete on the rate, the accepted quote executes offchain, and settlement happens onchain through smart-contract escrow on a payment-versus-payment basis, so both legs settle or neither does. Circle announced it on November 13, 2025 alongside a programme for partner-issued regional stablecoins, with a testnet open to approved institutions.

Payment-versus-payment settlement is the part worth understanding: it removes the risk that you deliver one leg and your counterparty fails to deliver the other, and makes the trade and its record one event rather than a value date followed by a reconciliation. It does not conjure liquidity — someone still takes the other side, and your rate reflects available depth.

One caveat worth stating plainly: this is institutional plumbing, not a retail swap screen. Circle's documentation directs prospective users to obtain an API key through a Circle representative. Circle has also signalled regional stablecoins for Arc, naming Brazilian real, Japanese yen and Mexican peso. Signalled is the operative word: treat anything beyond USDC and EURC as announced intent, not a live instrument.

What is EURC's status on Arc?

Arc's public testnet, running since October 28, 2025, issues both testnet USDC and testnet EURC through Circle's faucet at faucet.circle.com. Testnet tokens carry no monetary value; that the test environment ships a euro token alongside the dollar one is a signal of intent. Beyond that we are deliberately not publishing specifics. Whether EURC is live on Arc mainnet as you read this, at what contract address, which applications support it, and which live pairs StableFX quotes are all changing week by week, and a list published here would be wrong by the time you read it. Circle's EURC and StableFX documentation is the source of truth, and a contract address should be copied from the issuer, never from an article.

One Arc quirk matters even if you only touch EURC. Gas on Arc is paid in USDC, so the network fee is denominated in dollars; fees averaged about $0.004 per transaction on the public testnet as of August 2026. A euro business on Arc still needs a small dollar balance for fees — a rounding error, but budget for it. More on fees.

Frequently asked questions

What should I check before holding EURC?

Redemption: who can redeem EURC for euros directly, and how fast — a stablecoin's value rests on redemption, not on a chart. The network: the same ticker exists on several blockchains, and sending to the wrong one is how people lose tokens, as tokens across chains explains. And exit liquidity at your size, tested with a real quote rather than assumed.

Is EURC the same as a euro in a bank account?

No. A euro-area bank deposit carries deposit-guarantee protection up to a statutory limit and is a claim on a supervised credit institution. EURC is a redemption claim on Circle Internet Financial Europe SAS, an ACPR-licensed electronic money institution, backed by segregated euro reserves. Both are supervised; the protections differ.

Can I convert EURC to USDC directly?

Yes, on venues that quote the pair, and institutionally through StableFX on Arc. The rate is a market rate, not a fixed peg: EURC tracks the euro and USDC the dollar, so the pair moves with EUR/USD. Which venues quote it on Arc is still settling in the chain's first weeks — check the venue you intend to use rather than assuming coverage.

Why is EURC so much smaller than USDC?

Because global trade, commodity pricing and offshore savings are overwhelmingly dollar-denominated, and stablecoin demand mirrors that. Europe also has fast, cheap domestic euro payments already, removing one of the strongest cases a dollar stablecoin has elsewhere.

Does using EURC avoid dollar exposure entirely?

Only for the balance itself. Paying gas in USDC on Arc, or routing through a dollar pair because the euro pair is thin, reintroduces dollar exposure through the plumbing. Check the whole path, not the token alone.