USDT vs USDC: issuer, reserves, freezes and networks

Short answer: USDT is issued by Tether from El Salvador, USDC by Circle through a US and a French company. Circle holds cash and a government money market fund and reports monthly. Tether reports quarterly and also holds gold, bitcoin and loans, with a $4.11 billion cushion above what it owes (30 June 2026). Both can block addresses. USDC is authorised under the EU's MiCA rules; USDT is not. USDT is more than twice as large and is the stablecoin of Tron, where USDC is no longer issued. For moving money, the network matters more than the coin.

The short difference: issuer, reserves, freeze powers, networks

Checked on 30 September 2026 against the sources linked in the sections below.

Who issues each coin, and how the reserves are reported

USDT and Tether

Tether's terms name the issuer as Tether International, S.A. de C.V., authorised in El Salvador as a stablecoin issuer and digital asset service provider. The accounting firm BDO checks its reserve quarterly. For 30 June 2026, Tether's announcement of 31 July 2026 gives total assets of $187.75 billion against liabilities of $183.64 billion, an excess of $4.11 billion, with about $184.6 billion of USD₮ issued. The same release calls Tether one of the largest holders of US Treasuries, reports more than 146 tons of gold, mentions bitcoin and says secured lending fell by about $2.38 billion in the quarter. Circulation is published on the transparency page, typically daily.

USDC and Circle

Circle's USDC terms name two issuers: Circle Internet Financial, LLC in the US and, since 1 July 2024, Circle Internet Financial Europe SAS in France. According to the transparency page, most of the reserve sits in the Circle Reserve Fund (USDXX), an SEC-registered government money market fund managed by BlackRock and reported daily; the rest is cash, mostly at a handful of the world's largest banks. A Big Four accounting firm checks it every month. The USDC page showed $75.2 billion in circulation on 24 September 2026, with holdings equal to or above that.

So the difference is what the reserve holds and how often outsiders look. Circle's is cash and near-cash, checked monthly. Tether's also holds assets whose prices move, plus loans, checked quarterly, with the excess as a cushion.

Neither issuer redeems for the general public. Tether's fee page sets a 100,000 USD minimum and a fee of the greater of $1,000 or 0.1% for verified customers, and Circle Mint is not available to individuals. Everyone else exits through the market, which is why the price can drift from $1.

Has USDT or USDC lost its dollar peg?

Both have, briefly, at different times and for different reasons.

• USDT, 12 May 2022. In the crash after TerraUSD's collapse, USDT fell as low as $0.95, Decrypt reported from CoinMarketCap data. Tether said that day it was processing more than $2 billion of redemptions, and on 21 May put the total it had handled at over $10 billion.
• USDC, 10 to 13 March 2023. Silicon Valley Bank failed holding $3.3 billion of USDC's reserve, about 8%. A Federal Reserve note records USDC as low as 86 cents while Circle's redemptions were paused over the weekend. The peg returned after US authorities protected depositors on Sunday 12 March and redemptions resumed on the 13th, when Circle announced the de-peg had closed. USDT, the note says, traded marginally above $1 that weekend.

The two have been shaken by separate events, not together, and a swap between them during one is priced at the market rate, not 1:1.

Freezes and blacklists: what each issuer's terms allow

Both issuers can stop an address inside their token's contract. The rules for doing it differ.

Tether. Its terms, updated on 26 February 2026, allow freezing as the law requires or "where Tether, in its sole discretion, determines it is prudent" (section 2), and list blacklisting an address as a sanction for prohibited use (section 8). In the USDT contract on Ethereum, a blacklisted address cannot send, transfers to it still arrive, and the owner's destroyBlackFunds function can set its balance to zero.

Circle. Section 13 of the USDC terms, updated on 12 December 2025, allows blocking addresses linked to illegal activity or breaches of the terms, and freezing on a government order. The Stablecoin Access Denial Policy it links to narrows this to security threats such as a compromised minting key, laws or orders from US or French authorities or courts, and certain urgent law-enforcement, sanctions or national-security requests. A blocked address can neither send nor receive USDC: the USDC contract checks both sender and recipient.

Either block acts only on that token, so ETH or any other token at the same address is not affected.

What a blocked payout address means

A USDC payout to an address Circle has blocked fails, because the contract rejects it. A USDT payout to a blacklisted Ethereum address arrives but cannot be moved on. The Ghostex form checks an address's format for the network, not the issuers' blocklists, and a broadcast payout cannot be recalled (Terms, section 11). Paste an address you control, taken from your wallet's receive screen rather than from transaction history, where address poisoning plants look-alikes.

Regulation in 2026: MiCA in the EU and the GENIUS Act in the US

European Union. Under MiCA, a dollar stablecoin offered in the EU is an e-money token, and its issuer needs authorisation. Circle announced on 1 July 2024 that its French company held an electronic money institution licence from the ACPR, France's banking supervisor, and that USDC and EURC were issued in line with MiCA. ESMA's interim MiCA register lists Circle Internet Financial Europe SAS with USDC and EURC white papers from that date; no Tether company appears in it (checked 30 September 2026). On 17 January 2025 ESMA and the European Commission told supervisors that, by the end of that quarter, trading platforms in the EU should stop offering stablecoins whose issuer is not authorised there.

United States. The GENIUS Act became Public Law 119-27 on 18 July 2025. The Treasury's proposed rules of 17 August 2026 give 18 January 2027 as the expected effective date, after which issuing a payment stablecoin in the US generally needs a federal or state licence. From 18 July 2028, service providers generally may not offer or sell to people in the US a payment stablecoin without a licensed issuer, and the proposal also covers coins issued abroad.

Circle's national trust bank, First National Digital Currency Bank, N.A., received final OCC approval on 10 July 2026, and Circle says it will be able to manage the USDC reserve. Tether launched USA₮ on 27 January 2026: a separate US token issued by Anchorage Digital Bank, N.A., while USD₮ stays its global coin. Ghostex does not list USA₮.

These rules decide which platforms may list which coin and for whom, not how the tokens move on-chain. This summary is not legal advice.

Networks: where USDT and USDC exist, and which versions Ghostex lists

Each issuer mints on its own list of chains. Tether's supported protocols page lists USD₮ on thirteen chains, among them Ethereum, Tron, Avalanche, Solana, TON and Aptos, and says Tether no longer issues or redeems it on Omni, Kusama, Bitcoin Cash SLP, EOS and Algorand. Circle's contract list includes Ethereum, Solana, Base, Arbitrum, Polygon PoS, OP Mainnet and Avalanche among many others, but not Tron: Circle stopped minting USDC there on 21 February 2024.

On other chains, the USDT or USDC in your wallet may be someone else's version:

• USDT on Arbitrum One and Polygon is USDT0. Queried on 30 September 2026, the two contracts report the names USD₮0 and USDT0. The USDT0 documentation describes USDT locked in an adapter contract on Ethereum and the same amount minted on the other chain.
• On BNB Smart Chain, neither issuer mints its dollar token. Tether's page gives only a Tether Gold contract there, and Circle's list leaves BNB Chain out. BscScan labels the main tokens Binance-Peg BSC-USD and Binance-Peg USD Coin: pegged tokens from Binance, like those in wrapped vs native crypto.
• Some chains also carry an older bridged USDC, shown as USDC.e, next to Circle's own. When native USDC came to Arbitrum, Circle wrote that USDC.e is not issued by Circle.

USDT on TON is on the supported assets page but paused. Confirmations follow the network, not the coin, and the order page names the asset and the network, so check the token contract in your wallet against the issuer's own list before you send.

Fees and liquidity: why the network matters more than the coin

Neither token pays for its own transfer. You pay each network in its own coin: ETH on Ethereum, Arbitrum One, Base and Optimism, TRX on Tron, SOL on Solana, BNB on BNB Smart Chain, POL on Polygon and AVAX on Avalanche. Moving USDT or USDC on the same chain costs about the same; moving either on one chain rather than another can differ many times over. The guide to the cheapest network to send USDT compares the chains, and it holds for USDC too.

USDT is the bigger market, $184.6 billion against $75.2 billion, and the only one of the two on Tron; USDC is the one EU-authorised platforms can list. For a transfer, what counts is whether the recipient accepts that coin on that network. On a Ghostex swap the payout network fee is covered, so you pay only your wallet's fee for the deposit (see network fees on a swap).

Switching between USDC and USDT without an account, and why it is not exactly 1:1

A Ghostex order changes the issuer and, if you want, the network in one step, with no account and no KYC:

• USDC on Ethereum to USDT on Tron changes both at once.
• USDC to USDT on Solana changes only the issuer.
• USDT on Ethereum to USDC on Base moves a balance to Circle's coin on Base.
• USDT from Ethereum to Tron changes only the network, and USDC to XMR leaves dollars altogether.

USDC on BNB Smart Chain can be a payout, not a deposit. None of these is exactly 1:1. The flat 0.48% fee is inside the quote, 4.80 on 1,000 USDC, so with both coins at exactly $1 you receive 995.20 USDT. And Oracle quotes the market rate between the two, a small fraction of a cent off 1:1 in calm markets and far more in March 2023. The USDC to USDT TRC20 page works the numbers through.

A fixed rate locks the amount for 30 minutes if you send exactly that amount inside the 30-minute deposit window; a floating rate settles at the market when the swap executes. Orders run from about $10 to $10,000,000 and most finish in 5 to 30 minutes. A deposit that cannot complete goes back automatically to your refund address or the address you paid from, minus the network cost.

Which one to use: let the destination decide

This is general information, not investment advice. Usually the choice is made for you:

• Paying someone or funding an account: use the coin and network they name. Anything else is a different asset, and a wrong-network deposit is not always recoverable.
• On Tron: USDT, since USDC is no longer issued there.
• On a platform authorised in the EU: USDC, the one of the two with MiCA authorisation.
• Choosing for yourself: weigh the first table: reserve contents and reporting, freeze policy and the network you will use. The 2022 and 2023 episodes each hit one coin while the other held, which is why some holders keep both.

USDT vs USDC questions

Is USDC safer than USDT?

It depends on the risk. USDC holds cash and a government money market fund, reports monthly and is authorised under MiCA. Tether reports quarterly and also holds gold, bitcoin and loans, with a $4.11 billion excess (30 June 2026). Each has traded well below $1 under stress: USDT at $0.95 in May 2022, USDC at 86 cents in March 2023.

Is 1 USDC always worth 1 USDT?

No. Both trade close to $1, but rarely at exactly the same price, and a swap takes the 0.48% fee: 1,000 USDC gives 995.20 USDT when both are at exactly $1.

Can I send USDC to a USDT address?

One 0x address can hold both on the same network, so the USDC arrives as USDC. An order that expects USDT will not treat it as USDT, and on Ghostex a different asset may be unrecoverable (Terms, section 9).

Can Tether or Circle freeze my wallet?

Each can block an address for its own token, Tether under its terms and Circle under its access denial policy. ETH and other tokens at that address are not affected.

Which USDT and USDC networks does Ghostex support?

USDT on Ethereum, Tron, BNB Smart Chain, Solana, Arbitrum One, Polygon and Avalanche. USDC on Ethereum, Solana, Base, Arbitrum One, Polygon, Optimism and Avalanche, plus BNB Smart Chain as a payout only.