USDT vs USDC: Differences, Reserves and Which to Use

USDT vs USDC at a glance

The table below compares USDT and USDC on live market data from the CoinScoop stablecoin registry, refreshed twice a day.

Metric	USDT	USDC
Issuer	Tether	Circle
Market cap	$184B	$74.28B
30-day change	+0.5%	-0.3%
Price	$0.9992 On peg	$0.9996 On peg
Type	Fiat-backed	Fiat-backed
Backing	Cash and cash equivalents (mostly short-dated US Treasury bills), plus other assets including Bitcoin and gold, per Tether's quarterly attestations	Cash and short-dated US Treasuries, held largely in the Circle Reserve Fund managed by BlackRock, plus bank deposits
Blockchains	53 (most on Tron)	97 (most on Ethereum)
Pays yield to holders	No	No
Tracked since	Nov 2017	Sep 2018

Live data from DefiLlama · updated Oct 8, 2026, 19:13 UTC

What is the difference between USDT and USDC?

The main difference between USDT and USDC is the issuer and how openly each one proves its reserves. USDT is issued by Tether, a privately held company now based in El Salvador. USDC is issued by Circle, a US company listed on the New York Stock Exchange.

Both are fiat-backed stablecoins. Each token is meant to be redeemable for one US dollar, and the issuer holds reserves to cover that promise. In practice they behave almost identically for most users: both trade within a fraction of a cent of $1 almost all the time, and both can be sent across dozens of blockchains in seconds.

The differences show up in four places:

• Size and liquidity: USDT is roughly 58.7% of all stablecoins against 23.7% for USDC, and it is the main quote currency on most global exchanges.
• Transparency: Circle publishes monthly attestations of USDC reserves. Tether publishes quarterly attestations.
• Regulation: USDC is issued under MiCA in the EU. USDT is not, and Tether serves the US market through a separate token, USAT.
• Where they live: USDT’s largest home is Tron, with 50% of supply. USDC’s is Ethereum, with 69%.

Who issues USDT and USDC?

Tether issues USDT, and Circle issues USDC. Tether launched USDT in 2014, making it the oldest stablecoin still operating. Circle launched USDC in September 2018 with Coinbase, through a joint body called Centre. Circle became the sole issuer in 2023 and listed on the NYSE (ticker CRCL) in June 2025.

The corporate difference matters. As a listed company, Circle files audited financial statements and is answerable to securities regulators and shareholders. Tether is privately held. It reports reserves through attestations rather than full audits, and it has said it earns billions of dollars a year in profit from interest on its reserves.

How are USDT and USDC backed?

Both USDT and USDC are backed mainly by cash and short-dated US government debt, but their reserve mixes differ. Most of USDC’s reserves sit in the Circle Reserve Fund, a US government money market fund managed by BlackRock, plus cash at banks. Tether’s reserves are mostly US Treasury bills, but also include assets such as Bitcoin, gold and secured loans.

An attestation confirms that reserves existed on a given date. It is narrower than a full audit, which also tests controls over time. Read the latest reports at Tether’s transparency page and Circle’s transparency page.

Is USDT or USDC safer?

Neither USDT nor USDC is risk-free. USDC is generally seen as the more transparent and more tightly regulated of the two, while USDT has the deeper trading liquidity. Both have kept their peg through most market stress, and each has a notable incident on record.

• USDC and Silicon Valley Bank (March 2023): Circle disclosed that $3.3 billion of USDC reserves were held at SVB when the bank failed. USDC briefly fell to around $0.87 before US authorities guaranteed SVB deposits and the peg recovered within days. The episode showed that “cash in a bank” is only as safe as the bank.
• Tether and the New York Attorney General (2021): Tether paid $18.5 million to settle claims that it had misrepresented its reserves in earlier years. It also paid a $41 million penalty to the US CFTC the same year. Tether has since cut its commercial-paper exposure and moved most reserves into Treasury bills.

Both issuers can freeze tokens at specific addresses, usually at the request of law enforcement. Tether in particular freezes funds linked to sanctions and scams regularly. That matters if you self-custody. A frozen address cannot move its coins.

Live peg status for both coins is on their profiles: USDT is currently on peg and USDC is on peg.

How are USDT and USDC regulated?

USDC is issued under licensed regimes in the US and EU. USDT is issued offshore, and Tether launched a separate US-regulated coin, USAT, for American users.

In the United States, the GENIUS Act became law in July 2025. It requires payment stablecoin issuers to hold one-for-one reserves in cash and short-term Treasuries, publish monthly reserve reports, and get a federal or state licence. Its main requirements take effect 18 months after enactment, or 120 days after final regulations if those come sooner. Circle has positioned USDC for the new regime. Tether’s US-regulated product is USAT, issued through Anchorage Digital Bank, while USDT remains offshore.

In the European Union, the Markets in Crypto-Assets Regulation (MiCA) requires stablecoins offered to EU users to come from an authorised issuer. Circle holds an electronic-money licence in France, so USDC and its euro coin EURC are MiCA-compliant. USDT is not, which is why several exchanges have delisted or restricted USDT for EU customers.

Which blockchains are USDT and USDC on?

Both run on many blockchains. USDT is concentrated on Tron and Ethereum, while USDC is concentrated on Ethereum and Solana. USDT is live on 53 chains and USDC on 97, counting smaller deployments.

The split reflects how each coin is used. Tron’s low fees made USDT the default for exchange deposits and person-to-person payments in emerging markets. USDC’s Ethereum and Solana presence ties it to decentralised finance, on-chain payments and US platforms. Always send a stablecoin on the network the recipient expects. USDT on Tron and USDT on Ethereum are the same asset, but a transfer on the wrong network can be lost.

See the full chain breakdown on the USDT profile and the USDC profile.

USDT or USDC: which should you use?

Use USDT where liquidity and acceptance matter most, and USDC where transparency, regulation or US banking access matter most. For most everyday transfers either works. The deciding factor is usually what the other side accepts.

1. Trading on global exchanges: USDT. It has the most trading pairs and the deepest order books.
2. Using US-regulated platforms or cashing out to a US bank: USDC. It redeems 1:1 on Coinbase and other US venues.
3. EU users: USDC or EURC, because MiCA limits USDT on many EU platforms.
4. Low-fee transfers in emerging markets: USDT on Tron is the de facto standard.
5. DeFi lending and borrowing: both are widely supported. USDC is more common as collateral on Ethereum-based protocols.

Many traders hold both and switch between them as needed. Swapping USDT for USDC on a major exchange usually costs only a small trading fee.

Can you earn interest on USDT or USDC?

Neither USDT nor USDC pays interest to holders directly. The issuers keep the interest earned on reserves. Yields offered on these coins come from third parties: exchange rewards programmes, lending protocols where borrowers pay interest, or savings products that route deposits into Treasury-backed strategies.

Current rates on lending markets and savings products are tracked in our stablecoin yield guide. They vary daily and carry platform and smart-contract risk on top of the stablecoin itself. Under the GENIUS Act, payment stablecoin issuers may not pay interest to holders, and Congress has debated whether exchanges can keep offering rewards.

Frequently asked questions

Sources

• Tether — Transparency and quarterly reserve attestations
• Circle — USDC transparency and monthly attestations
• Congress.gov — S.1582, the GENIUS Act
• New York Attorney General — 2021 settlement with Tether and Bitfinex
• ESMA — Markets in Crypto-Assets Regulation (MiCA)
• DefiLlama — stablecoin supply data (via the CoinScoop registry)

Compare every other dollar stablecoin in our list of fiat-backed stablecoins.