The short answer
- USDT is a token issued by Tether that aims to stay worth one US dollar, backed by reserves the company says it holds.
- It runs on several blockchains; Tron (TRC20, addresses start with T) and Ethereum (ERC20, addresses start with 0x) are the most used, and sender and receiver must be on the same one.
- Risks include a temporary slip below $1, frozen addresses, reserve doubts and changing rules, including restrictions for EU users.
What is USDT?
What is USDT? It is a stablecoin: a crypto token issued by the company Tether, designed so that one USDT is worth one US dollar.
USDT lives on public blockchains like any other token, so it can be sent between wallets around the clock, in minutes, without a bank. Unlike Bitcoin, it has an issuer. Tether creates new USDT when approved customers send it dollars and destroys USDT when they redeem it. That central issuer is what lets USDT hold a steady price, and it is also the main source of its risks.
On crypto platforms, USDT plays the role that the dollar plays in forex. Most coins are quoted against it, as in BTC/USDT, and traders park money in it between trades instead of cashing out to a bank.
How does USDT keep its one-dollar price?
Through reserves and redemption: Tether says it holds assets at least equal to all USDT in circulation, and large customers can swap USDT for dollars with the company.
Tether publishes periodic reports on its reserves, which it says are mostly short-term US government debt and cash-like assets, along with other holdings. When USDT trades below $1 on the open market, traders with redemption access can buy it cheaply and redeem it with Tether for a full dollar, which pushes the price back up. When it trades above $1, they can create new USDT and sell it. This arbitrage keeps the market price very close to one dollar in normal conditions.
The mechanism depends on trust. If the market doubts that reserves are sufficient or that redemptions will be honoured, the price can slip, as has happened briefly in stressed periods.
Which USDT network should you use?
The one the receiving address expects. Sending on the wrong network is the most common way people lose USDT.
| Network | Label on platforms | Address starts with | Fees |
|---|---|---|---|
| Tron | TRC20 | T | Usually low |
| Ethereum | ERC20 | 0x | Can be high when the network is busy |
USDT also exists on several other blockchains. USDT on Tron and USDT on Ethereum are separate tokens on separate ledgers; they are not interchangeable without a platform or bridge converting between them. When you withdraw from a platform, you pick the network. The recipient must give you an address on that same network and confirm they can receive it there.
Some networks, including a few that use 0x-style addresses, look alike. An address that "looks right" is not proof that it is on the right network, so always check the network name, not just the first characters.
What do people use USDT for?
- Trading: as the base currency on crypto platforms, to buy and sell other coins.
- Parking value: to step out of volatile coins without leaving the crypto system.
- Transfers: to move dollar value across borders quickly, including where access to dollars is limited.
- Payments: some businesses and freelancers accept it, though consumer protections are minimal compared with cards or bank transfers.
How does USDT compare with other stablecoins?
USDT is not the only dollar stablecoin. Others are issued by different companies, with different reserve arrangements, reporting and regulatory status, and some are authorised in places where USDT is not. There are also stablecoins that try to hold their value through crypto collateral or algorithms rather than cash-like reserves, and some of those have failed badly. The label "stable" describes the aim, not a guarantee, so the useful questions for any stablecoin are the same: who issues it, what backs it, who checks the backing, and under which rules can you redeem it.
What can go wrong with USDT?
Five things to understand: the peg can slip, addresses can be frozen, reserves rely on trust, rules can change, and mistakes cannot be reversed.
The price can slip below $1
Small deviations happen. In a serious scare they can be larger. As an illustration, if USDT trades at $0.997, a holding of 5,000 USDT is worth $4,985 at market, a $15 shortfall that grows if the slide deepens.
Tether can freeze addresses
Because USDT is issued by a company, Tether can block tokens at specific addresses, for example at the request of law enforcement. That helps against theft and fraud, but it also means USDT is not beyond anyone's control in the way Bitcoin is.
Reserves are a matter of trust
Tether publishes reserve reports, but you are relying on the company's disclosures and its ability to meet redemptions under pressure. Reports that you cannot redeem directly as a small holder are a reminder that USDT is a claim on a private firm, not insured bank money.
The rules keep changing
USDT is not authorised under the EU's MiCA regulation, and EU regulators have told licensed crypto firms to stop offering stablecoins that do not comply. As a result, platforms licensed in the EU have removed or restricted USDT for EU customers, though holding it in your own wallet is not banned. In the US, the GENIUS Act of 2025 created a federal framework for payment stablecoins, including one-to-one reserve requirements. How each regime applies to a given token and user can change, so check the current position where you live.
Mistakes are permanent
A transfer to a wrong address or network cannot be cancelled. Some scammers exploit this with address poisoning: they send you a tiny amount from an address that looks like one you use, hoping you copy it from your history next time.
How do you send USDT without losing it?
- Ask the recipient which network they accept, and confirm the address is for that network.
- Copy the address from the source, never from your transaction history, and check the first and last several characters.
- Send a small test amount first and wait until it arrives.
- Send the rest, and keep the transaction ID so the transfer can be traced on a block explorer.
- Remember that some platforms need a memo or tag for certain networks; leave it out and the funds may not be credited.
Quick follow-ups
Is USDT the same as USDC?
No. Both aim to track the US dollar, but they are issued by different companies with different reserves, disclosures and regulatory status. Neither is a bank deposit.
What happens if I send USDT on the wrong network?
Often the funds are lost. If the receiving platform supports the network you used, it may be able to recover them, sometimes for a fee, but it has no obligation to do so.
Can I earn interest on USDT?
Some platforms offer yield on stablecoins, but it comes from lending or other activities that carry real risk. High fixed returns are a common feature of fraud.
Sources
- Tether, published USDT reserve reports
- Regulation (EU) 2023/1114 on markets in crypto-assets (MiCA)
- European Securities and Markets Authority, statement on non-MiCA-compliant stablecoins (January 2025)
- US Congress, GENIUS Act of 2025 (Public Law 119-27)