The essentials
- USDT is a stablecoin issued by Tether that aims to be worth one US dollar, backed by reserves the company reports on.
- It runs on several blockchains; the sending and receiving networks must match, or funds can be lost.
- It is not a bank deposit: its value depends on Tether's reserves, its ability to redeem, and regulators' treatment of it.
What is USDT? It is a token, issued by the company Tether, that is designed to keep a value of one US dollar. It lives on public blockchains, moves around the clock and is widely used as the dollar leg of crypto trading pairs. It is not a dollar in a bank account, and understanding the difference is the point of this page.
How the peg is meant to hold
Tether issues new USDT when approved customers send it dollars, and destroys USDT when those customers redeem tokens for dollars. In principle, every token in circulation is matched by assets in Tether's reserves, mostly short-term US government debt and cash equivalents, according to the company's own reports. Tether publishes periodic attestation reports from an accounting firm on those reserves.
The market price stays close to $1 through arbitrage. If USDT trades below a dollar, large holders can buy it cheaply and redeem it with Tether at full value; if it trades above, they can create new tokens and sell them. That mechanism works only as long as redemptions are honoured and reserves are sufficient. Direct redemption is normally open only to verified customers dealing in large amounts; everyone else relies on the market price.
Networks: where USDT lives
USDT exists as separate tokens on several blockchains. The two most commonly used for transfers are:
| Network | Token standard | Address format | Paid in |
|---|---|---|---|
| Tron | TRC20 | Starts with T | TRX (network fee) |
| Ethereum | ERC20 | Starts with 0x | ETH (gas fee) |
The token on each network is distinct. USDT sent over Tron can only be received on a Tron address, and USDT sent over Ethereum only on an Ethereum-compatible address. The sender and receiver must choose the same network. Picking the wrong one is one of the most common ways people lose stablecoins; sometimes a platform can recover the funds for a fee, often it cannot.
Fees differ too. Network charges depend on how busy each chain is at the moment, so check the fee your wallet or platform shows before confirming, rather than relying on a figure you saw before.
Holding USDT: platform or wallet
If USDT sits in a platform account, you are exposed to two companies: Tether, which issues the token, and the platform, which holds it for you. If it sits in your own wallet, you remove the platform but take on the job of keeping the keys safe and choosing networks correctly. Either way, the token's value still depends on Tether.
What USDT is used for
- Trading pairs. Many crypto platforms price assets in USDT (BTC/USDT, ETH/USDT), letting traders move in and out of positions without touching a bank.
- Parking value. Traders move into USDT to step out of volatile coins while staying on-chain.
- Transfers. People send USDT across borders because it settles quickly and at any hour.
- Dollar access. In some countries, people hold USDT as a substitute for scarce or restricted dollars.
The risks behind a stable price
Reserve risk. The peg is only as good as the assets behind it and the honesty of the reporting. In 2021 the US Commodity Futures Trading Commission fined Tether over past statements about its reserves. Reserve reports have become more detailed since, but an attestation is not the same as a full audit.
De-peg risk. Stablecoins have briefly traded below $1 during market stress. Some algorithmic stablecoins, which relied on trading mechanisms rather than reserves, collapsed completely. USDT is reserve-backed, but a loss of confidence could still push its price below a dollar for a time.
Freezing. Tether can freeze USDT held at specific addresses, and has done so in connection with law-enforcement requests. That helps against crime but shows the token is controlled by a company, not by code alone.
Regulation. Under the EU's MiCA rules, stablecoin issuers need authorisation, and some platforms serving EU customers have restricted USDT as a result. Rules elsewhere are changing too, and could affect where and how USDT can be used.
No deposit protection. USDT is not covered by bank deposit insurance, and holding it on a platform adds that platform's risk on top.
How USDT differs from other stablecoin designs
Stablecoins broadly fall into three families. Fiat-backed tokens such as USDT hold conventional assets such as cash and short-term government debt and promise redemption at par. Crypto-backed tokens lock up more crypto than the value of the stablecoins issued, so a price fall in the collateral can be absorbed, up to a point. Algorithmic designs tried to hold their peg through incentives alone, and some of the best known collapsed entirely. Each design moves the risk to a different place; none removes it. Our glossary defines the terms.
Sending USDT safely
- Confirm the network with the recipient before anything else, and match it exactly.
- Copy and paste the address, then compare the first and last several characters. Fraudsters create lookalike addresses to catch people who copy from their transaction history.
- For a large amount, send a small test transfer first.
- Make sure you hold enough of the network's own coin (TRX or ETH) to pay the fee.
- Never send USDT to someone who contacted you unprompted with an investment opportunity. See how to spot trading scams.
USDT compared with holding dollars
A dollar in a regulated bank is a claim on that bank, typically backed by a deposit guarantee up to a limit, and payments can often be disputed. A USDT token is a claim on Tether, with no deposit guarantee, and payments are final. In exchange, USDT moves around the clock, across borders and without a bank account. Whether that trade-off makes sense depends on what you need it for. For a long-term saver, a stablecoin is a payment tool, not a savings product, and any "interest" offered on it deserves the same scrutiny as any other investment return. For wider context see how crypto works.
Reader questions
Is USDT the same as a US dollar?
No. It aims to be worth one dollar and is backed by reserves Tether reports on, but it is a token issued by a private company, not currency issued by a central bank, and it carries no deposit protection.
What happens if I send USDT on the wrong network?
The funds arrive on a network the recipient's address or platform may not support. Sometimes a platform can recover them, often for a fee; sometimes they are lost for good. Always confirm the network first.
Why do TRC20 and ERC20 transfers cost different amounts?
Each network charges its own fee in its own coin, TRX on Tron and ETH on Ethereum, and the fee varies with how busy the network is.
Sources
- Tether, published reserve attestation reports
- US Commodity Futures Trading Commission, October 2021 order against Tether
- EU Markets in Crypto-Assets Regulation (MiCA)