At a glance
- USDT is a token issued by Tether that aims to be worth one US dollar, backed by reserves the company holds.
- It exists on several blockchains; sender and receiver must use the same network or funds can be lost.
- A stablecoin removes crypto price swings but adds issuer, reserve and platform risk.
What is USDT? It is a stablecoin: a crypto token designed to keep a value of one US dollar. The issuer, Tether, creates new tokens when approved customers deposit dollars and destroys tokens when they redeem. Between those two events USDT moves freely on public blockchains, which is why it is widely used on crypto exchanges as a stand-in for cash.
How the dollar link is meant to hold
- DepositA verified customer sends dollars to Tether
- MintNew USDT is issued to that customer
- CirculateTokens move between wallets and exchanges
- RedeemTokens returned to Tether are destroyed and dollars paid out
The peg does not depend on a law or a central bank. It depends on two things: the reserves being sufficient and accessible, and large holders being able to redeem at one dollar. When USDT trades below a dollar on exchanges, redeemers can buy it cheaply and swap it for a full dollar with the issuer, which pushes the price back up. When it trades above, they can create new tokens and sell them. Ordinary users generally cannot redeem directly, so they rely on that process working.
Networks: the same token on different rails
USDT is issued on several blockchains. They are not interchangeable at the address level: a transfer only arrives if both sides use the same network.
| Network | Token standard | Address looks like | Fee paid in |
|---|---|---|---|
| Tron | TRC20 | Starts with T | TRX (or network resources) |
| Ethereum | ERC20 | Starts with 0x | ETH |
Before any transfer, run three checks: the network selected on the sending platform matches the receiving address; the address was copied from the source, not from your transaction history; and a small test amount arrives before you send the rest. Address-poisoning scams plant look-alike addresses in your history for exactly this reason.
What is USDT used for?
- Trading pairs: many exchanges quote coins against USDT rather than dollars.
- Moving value between exchanges without converting back to a bank currency.
- Cross-border payments where bank transfers are slow or expensive.
- Parking funds between crypto trades without exposure to coin price swings.
Each of these swaps crypto price risk for a different set of risks, described below. It is also worth knowing that holding USDT earns nothing by itself; any platform offering a high fixed interest rate on stablecoin deposits is lending your tokens out or taking other risks to pay it, and that rate should be read as a measure of the risk involved.
The risks behind a "stable" coin
A stablecoin is only as good as its issuer's reserves and the system around it.
- Reserve risk: the backing assets could lose value or become hard to sell quickly.
- Issuer risk: the company can freeze tokens at specific addresses, for example at the request of law enforcement.
- De-peg risk: in stressed markets the price can drift below a dollar. Illustrative 10,000 USDT trading at $0.997 is worth $9,970, a $30 difference before any fee.
- Platform risk: USDT held on an exchange is exposed to that exchange's failure.
- Regulatory risk: rules for stablecoins are tightening in several regions, which can change which platforms may list a particular token.
Not every stablecoin works the same way
| Design | What backs it | Main weakness |
|---|---|---|
| Fiat-backed (USDT is this type) | Cash, short-term government bills and similar reserves held by an issuer | Depends on the issuer's honesty, reserves and banking access |
| Crypto-collateralised | Other crypto-assets locked in smart contracts, usually worth more than the stablecoins issued | Sharp falls in the collateral can force rapid liquidations |
| Algorithmic | Mainly an algorithm that expands or shrinks supply, sometimes with a partner token | Confidence can collapse quickly, and some designs have failed entirely |
USDT belongs to the first group, which is why its reserves and the issuer's published attestations draw so much attention.
What your exchange balance really is
A USDT balance shown in an exchange account is usually a figure in the exchange's own ledger, backed by tokens the exchange holds in its wallets on your behalf. You do not control those tokens directly until you withdraw them. That means you face two layers of risk at once: the stablecoin issuer and the exchange. Moving USDT to a wallet you control removes the exchange layer but places all responsibility for keys and addresses on you.
USDT compared with other ways of holding dollars
| Bank deposit | USDT on an exchange | USDT in your own wallet | |
|---|---|---|---|
| Protection scheme | Often, up to a limit | Generally none | None |
| Transfer speed | Hours to days | Minutes on-chain | Minutes on-chain |
| Reversible if sent in error | Sometimes | No | No |
| Who can freeze it | Bank, courts | Exchange and issuer | Issuer |
How reserves are reported
Tether publishes periodic reports describing the assets behind USDT. It helps to know what kind of document you are reading. An attestation is an accountant's statement that, at one point in time, the listed assets existed and exceeded the tokens in issue. A full audit goes further, testing controls and records over a period. Attestations are useful but narrower. When you read any stablecoin's reserve report, check the date, who signed it, what share of reserves sits in cash and short-term government bills, and what is held in riskier assets.
Rules are also changing. Several jurisdictions now require stablecoin issuers to hold high-quality reserves and publish regular disclosures before their tokens can be offered locally, which can affect where USDT is listed.
Fees when sending and converting
Sending USDT costs a network fee paid in the chain's own coin, and exchanges often add a flat withdrawal fee that differs by network. Converting between USDT and a bank currency adds a spread or trading fee on top. Compare the total cost of a withdrawal before choosing a network, and remember that the cheapest option is useless if the receiving side does not support it. More on these charges in our trading fees guide.
Reader questions
Is USDT the same as a US dollar?
No. It is a token that aims to be worth one dollar and is backed by the issuer's reserves. It is not legal tender and is not covered by bank deposit protection.
What happens if I send USDT on the wrong network?
If the receiving platform does not support that network, the funds may be lost or require a manual recovery that the platform is not obliged to perform. Always match networks and send a small test first.
Can USDT lose its peg?
Yes. Its market price has moved below one dollar during periods of stress. Whether it recovers depends on the issuer's reserves and redemptions working as intended.
Sources
- Tether, published transparency and reserve reports
- Tron and Ethereum network documentation on token standards