Tether (USDT) is the most widely used stablecoin in the world, the dollar that crypto actually trades against. It aims to hold a steady value of one US dollar, which makes it the default way to move in and out of positions, settle trades, and hold dollars on-chain. This review explains how USDT keeps its peg, what backs it, where it runs, and the risks worth knowing before you rely on it.
What is Tether (USDT)?
Tether is a stablecoin: a crypto token engineered to track the price of a fiat currency, in this case the US dollar. It is issued by Tether Limited, which says it holds reserves equal to the value of all USDT in circulation, so each token can in principle be redeemed for a dollar.
Unlike Bitcoin or Ethereum, USDT is not meant to rise in value. Its entire purpose is to stay still. That stability is what makes it useful: traders park funds in USDT between trades, exchanges quote most pairs in it, and people in countries with unstable currencies use it as informal dollar access.
How USDT keeps its peg
USDT holds its peg through reserves and redemption. Tether issues new USDT when verified partners deposit dollars, and burns USDT when they redeem. Because each token is meant to be claimable for a dollar, arbitrage traders push the market price back toward $1 whenever it drifts: they buy below a dollar to redeem at par, and sell above it.
This is a fundamentally different design from an algorithmic stablecoin. USDT is backed by a pool of real-world assets, not by a mechanism that mints a second token. Designs that relied purely on algorithms, such as the collapsed Terra UST, are not comparable and carry far higher risk.
What backs Tether’s reserves
Tether publishes regular attestations describing its reserves, which it reports are held mostly in US Treasury bills and other cash-equivalent instruments, alongside smaller allocations to other assets.
| Property | Detail |
|---|---|
| Issuer | Tether Limited |
| Peg target | 1 US Dollar |
| Reserve backing | Mainly US Treasuries and cash equivalents, per attestations |
| Transparency | Periodic attestations, not full independent audits |
| Main networks | Tron and Ethereum, plus several others |
The key nuance is the difference between an attestation and a full audit. An attestation confirms balances at a point in time; a full audit examines controls and holdings in much greater depth. Tether has moved toward more disclosure over the years, but the absence of a continuous full audit is the long-standing criticism and the main reason some users prefer USDC for its more conventional reporting.
Which blockchains USDT runs on
USDT is not native to one chain. It is issued on many, and the same dollar peg applies everywhere. The two dominant networks are Tron, popular for low-cost transfers and heavily used for remittances, and Ethereum, where USDT is central to DeFi. It also circulates on Solana, BNB Chain and others.
The practical point: when sending USDT, you must use the same network on both ends. Sending Tron-based USDT to an address that only accepts Ethereum-based USDT can result in lost funds. Always confirm the network first, as covered in our wallets guide.
Pros and cons
Strengths
- The deepest liquidity of any stablecoin, accepted almost everywhere in crypto.
- Fast, cheap dollar transfers, especially on Tron.
- A practical store of dollars for users in high-inflation economies.
- Reserves reported to be held largely in short-term US Treasuries.
Risks
- Attestations rather than continuous full audits leave a transparency gap.
- Regulatory scrutiny of stablecoin issuers is ongoing and could affect operations.
- Counterparty risk: you are trusting Tether Limited to honour redemptions.
- Brief depegs have happened in past market stress, though the peg recovered.
How to hold and use USDT
USDT is available on every major exchange, including Binance, Coinbase, and Kraken. If you are new, our how to buy crypto guide covers the steps. For holding:
- Pick the right network. Choose Tron for cheap transfers or Ethereum for DeFi, and use that network consistently.
- Self-custody for larger amounts. Move USDT off the exchange to a wallet you control. See our wallets guide.
- Use it as a staging asset. USDT is most useful as the dollar you trade and settle in, not as a long-term investment, since it is designed not to appreciate.
Frequently asked questions
Is USDT safe? USDT has held its dollar peg through years of heavy use, and Tether reports reserves backed mainly by US Treasuries. The main caveats are the reliance on attestations rather than full audits and the counterparty risk of trusting the issuer. It is widely used but not risk-free.
What is the difference between USDT and USDC? Both target one dollar. USDC is issued by Circle with monthly attestations and a more conventional regulatory posture, while USDT has deeper liquidity and wider emerging-market use but a longer-running transparency debate.
Why is USDT so popular on Tron? Transfers on the Tron network are fast and very cheap, which made Tron-based USDT the preferred rail for remittances and everyday dollar transfers, especially outside major financial centres.
Can USDT lose its peg? It can drift in extreme market stress, and brief depegs have occurred before recovering. A lasting break would require serious doubt about the reserves or redemptions. Treat any large deviation from $1 as a signal to be cautious.
Should I hold USDT as an investment? No. USDT is designed to stay at one dollar, so it will not grow in value. It is a tool for trading, settlement and holding dollars on-chain, not a way to build wealth.
This article is for informational purposes only and is not financial advice. See our editorial policy.