The answer in three lines
- USDT is a token issued by Tether that aims to stay worth one US dollar, backed by reserves the company says it holds.
- The same USDT exists on several blockchains; the sending and receiving network must match, and each network needs its own coin for fees.
- It is not a bank deposit: there is no deposit insurance, the issuer can freeze addresses, and the price can slip below $1 under stress.
What is USDT? It is a stablecoin: a crypto token designed to hold a steady value of one US dollar. Tether, the company behind it, issues new USDT when approved customers deposit dollars and destroys USDT when they redeem it, and says it keeps reserves to cover every token in circulation. That simple promise has made USDT one of the most traded crypto-assets, and it rests on assumptions worth examining one by one.
How does USDT keep its value close to $1?
Through reserves and redemption: large verified customers can swap USDT for dollars with Tether, and traders profit from closing any gap.
If USDT trades at $0.995 on exchanges, a customer able to redeem with Tether can buy it cheaply and redeem it for $1.00. If it trades above $1, they can create new USDT for $1 and sell it higher. That arbitrage pulls the market price back towards the peg. It works only while people trust that redemptions will be honoured and while the reserves are liquid enough to pay them.
Direct redemption is not open to everyone: it requires a verified account with Tether and involves high minimums. Ordinary holders rely on selling USDT on a platform, at whatever price the market offers.
What backs USDT?
A reserve portfolio that Tether describes as mostly short-term US government debt and cash-like assets, plus other holdings.
Tether publishes periodic reserve reports prepared as attestations by an accounting firm. An attestation confirms the assets reported at a particular date; it is narrower than a full audit of the company's controls over time. When reading any reserve report, check the date, the categories of assets, how much sits in less liquid holdings, and whether reserves exceed the tokens in circulation.
The quality of the reserves matters most in a rush for the exit. Short-term government debt can be sold quickly at a predictable price; loans, commodities or crypto holdings may not be.
What are TRC20 and ERC20, and why do they matter?
They are token standards on two different blockchains. USDT on Tron is TRC20; USDT on Ethereum is ERC20. They are not interchangeable in transit.
| USDT on Tron (TRC20) | USDT on Ethereum (ERC20) | |
|---|---|---|
| Address format | Starts with T | Starts with 0x |
| Fee paid in | Tron's native resources (TRX, energy and bandwidth) | Ether (ETH) as gas |
| Typical use | Frequent transfers between platforms | Interaction with Ethereum applications |
USDT also exists on several other blockchains. The rule is the same everywhere: the network you send on must be a network the recipient supports for that address. Sending USDT on Ethereum to a platform that only credits Tron deposits may result in funds that the platform cannot, or will not, recover.
A second trap catches self-custody users. Holding USDT in a wallet does not let you move it unless you also hold the network's own coin to pay the fee. A wallet with 500 USDT and no TRX on Tron, or no ETH on Ethereum, is stuck until you add some.
What is USDT used for?
As a trading currency on crypto platforms, as a way to move dollar value across borders quickly, and as a temporary parking place away from volatile coins.
Most crypto trading pairs are quoted against USDT or other stablecoins rather than against bank currencies, so traders hold it between positions. It moves at any hour, including weekends, without a bank in the loop. In countries with high inflation or capital controls, some people use it as a store of dollar value, accepting its risks in exchange for access. Those same features are why USDT is also used by fraudsters, who favour it for "investment" scams and fake payment requests; see how to spot trading scams.
How does USDT compare with other kinds of stablecoin?
USDT belongs to the reserve-backed group; other designs rely on crypto collateral or on algorithms, with different failure modes.
Reserve-backed stablecoins hold conventional assets such as cash and government debt, so their risk sits with the issuer and its custodians. Crypto-collateralised stablecoins lock up more crypto than the tokens they issue and liquidate positions automatically if collateral values fall, which exposes them to sharp market crashes and code risk. Algorithmic designs, which try to hold the peg mainly through incentives and a companion token, have the weakest record: the collapse of TerraUSD in May 2022 showed how quickly such a peg can fail once confidence goes. Knowing which group a stablecoin belongs to tells you which question to ask first.
Can USDT lose its peg?
Yes. It has traded below $1 during periods of stress, usually briefly, and there is no guarantee that any future episode would be brief.
An illustrative calculation: if USDT fell to $0.995, a holding of 10,000 USDT would be worth $9,950 at market, a $50 shortfall. A deeper break would reflect doubts about the reserves themselves, which is when the gap between a stablecoin and an insured bank balance becomes very real. Regulation of stablecoins is changing in many places, and in the EU the MiCA framework restricts which stablecoins regulated platforms may offer, so availability differs by country.
What other risks come with holding USDT?
- Issuer risk: you depend on Tether's reserves, management and banking relationships.
- Freezing: Tether can freeze USDT held at specific addresses and has done so in cases linked to crime or sanctions. Innocent holders who received tainted funds can be caught up in this.
- Platform risk: USDT held on an exchange is a claim on that exchange, as described in how crypto works.
- Operational risk: wrong network, wrong address or missing fee coins.
- No deposit protection: bank deposit guarantee schemes do not cover stablecoins.
What does moving USDT cost?
A network fee on-chain, plus whatever the platform charges to withdraw, which is often a flat amount that hurts small transfers.
Platforms usually set their own withdrawal fee per network. As an illustration, a flat 1 USDT withdrawal fee is 0.5% of a 200 USDT withdrawal but only 0.01% of a 10,000 USDT one. Compare networks on the withdrawal screen before sending, and look at the minimum withdrawal too. Our fees guide covers these charges alongside trading costs.
A safe routine for sending USDT
- Confirm which network the recipient supports and copy the address from them, not from an old message.
- Check the first and last several characters of the pasted address; clipboard-swapping malware changes addresses silently.
- Check you hold enough of the network's own coin to pay the fee, if sending from your own wallet.
- Send a small test amount and wait for it to arrive before sending the rest.
- Keep the transaction ID; it is the only proof of the transfer.
Follow-up questions
Is USDT the same as a US dollar?
No. It aims to be worth one dollar and is backed by reserves the issuer says it holds, but it is a private company's token with no deposit insurance, and its market price can move away from $1.
I sent USDT on the wrong network. Can it be recovered?
Sometimes, if the receiving platform controls the same address on the other network and agrees to help, often for a fee. Often it cannot. Contact the receiving platform's official support directly and ignore anyone who approaches you offering recovery.
Why can't I send USDT from my wallet even though I have a balance?
You probably have no native coin for the fee. Transfers on Ethereum need ETH for gas and transfers on Tron need TRX resources. Add a small amount of the right coin and try again.
Sources
- Tether, published reserve reports and terms of service
- European Union, Markets in Crypto-Assets Regulation (MiCA)
- Tron and Ethereum token standard documentation