What Is Tether?

Tether (USDT) is a stablecoin — a type of cryptocurrency designed to maintain a stable value by pegging its price to a traditional currency. Each USDT token is intended to be backed 1:1 by reserves held by Tether Limited, the company behind the token. Launched in October 2014 (originally under the name Realcoin before rebranding to Tether), it was one of the first stablecoins and has grown to become the largest by far, as well as the most traded cryptocurrency by daily volume, with a market capitalization exceeding $100 billion.

Overview - Table of Contents
What Is Tether?
Getting Started With Tether
How To Get A Tether Wallet?
Tether Resources
How To Buy Tether?
Latest Tether News

How Tether Works

USDT serves as a critical piece of infrastructure in the cryptocurrency ecosystem. Traders use it to move in and out of volatile crypto positions without converting to fiat currency, which can be slow and expensive. It provides a dollar-denominated store of value on-chain, enabling DeFi protocols, lending platforms, and decentralized exchanges to operate with a stable unit of account. In emerging markets across Latin America, Africa, and Southeast Asia, USDT has become a popular way to access dollar-denominated savings and remittances, particularly in countries with volatile local currencies or limited banking infrastructure.

Tether was originally built on Bitcoin's blockchain using the Omni Protocol (also called Omni Layer), an open-source software layer that enables the issuance of digital tokens on top of Bitcoin. As the cryptocurrency ecosystem expanded, Tether migrated to additional blockchains to meet demand. Today, USDT circulates on multiple blockchains simultaneously. The largest amounts are on Tron (which dominates for peer-to-peer transfers in emerging markets due to fees of less than a cent) and Ethereum (widely used in DeFi). USDT is also available on Solana, Avalanche, Polygon, Arbitrum, Optimism, and several other networks. This multi-chain presence makes USDT accessible across virtually the entire cryptocurrency ecosystem.

Supported Currencies

While USDT (pegged to the US dollar) is by far the most widely used Tether product, the company has also issued tokens pegged to other currencies. Tether Euro (EURT) is pegged to the euro and circulates on Ethereum. Tether Gold (XAUT) is backed by physical gold held in Swiss vaults, with each token representing one troy ounce. These alternative Tether products have much smaller market capitalizations than USDT but serve specialized use cases.

Reserves and Transparency

Tether Limited publishes periodic attestation reports detailing its reserves, which consist primarily of US Treasury bills, money market funds, and other cash equivalents. The distinction between an attestation and a full audit is significant: attestation reports are point-in-time snapshots prepared by accounting firms that verify reserve balances on a specific date, while a comprehensive audit would examine controls, processes, and compliance over time. Tether has not yet undergone a full independent audit, which remains a point of criticism.

The company has faced scrutiny and regulatory actions regarding the composition and sufficiency of its reserves. In 2021, Tether and its affiliated exchange Bitfinex paid $18.5 million to settle charges with the New York Attorney General's office related to claims about reserve backing. Since then, transparency has improved substantially, with more frequent and detailed reserve disclosures showing a shift toward highly liquid assets — particularly short-dated US Treasury bills, which now constitute the majority of Tether's reserves. In 2023, Tether reported significant profits from its Treasury holdings, reflecting the high-interest-rate environment.

Market Position

As the stablecoin market has matured, Tether has maintained its dominant position through deep liquidity, first-mover advantage, and widespread integration across exchanges and DeFi protocols. USDT trading pairs are among the most liquid in cryptocurrency — on many exchanges, the USDT pair for a given asset has more volume than its USD pair. The token is supported by virtually every exchange and DeFi platform, and it is one of the most common base pairs on exchanges like Poloniex, Bittrex, and OKX. Despite competition from USDC (issued by Circle) and newer stablecoins, USDT continues to command the largest share of stablecoin market capitalization and trading volume.

Getting Started With Tether

Getting started with Tether is simple:

Step 1: Choose a cryptocurrency wallet that supports the blockchain you want to use USDT on (e.g., MetaMask for Ethereum, Phantom for Solana, TronLink for Tron).
Step 2: Purchase USDT on a cryptocurrency exchange or swap other crypto for USDT.
Step 3: Transfer USDT to your wallet. Make sure to select the correct network when withdrawing.
Step 4: Use USDT for trading, DeFi, payments, or as a stable store of value.

How to Get a Tether Wallet?

Because USDT exists on multiple blockchains, the wallet you choose depends on which network you want to use. Make sure to match your wallet to the network your USDT is on — sending Ethereum-based USDT to a Tron address (or vice versa) will result in lost funds.

MetaMask (Ethereum, L2s)

MetaMask supports USDT on Ethereum and all major Ethereum Layer 2 networks (Arbitrum, Optimism, Polygon). Since USDT is an ERC-20 token on Ethereum, it works automatically in any Ethereum-compatible wallet. MetaMask is available as a browser extension and mobile app. Note that USDT on Ethereum requires ETH to pay gas fees for transfers.

TronLink (Tron)

TronLink is the most popular wallet for holding and transferring USDT on the Tron network. Tron-based USDT transfers are very fast and cost a small amount of TRX (Tron's native token) for gas. Because of these low fees, the majority of USDT peer-to-peer transfers worldwide happen on Tron. TronLink is available as a browser extension and mobile app.

Trust Wallet

Trust Wallet is a multi-chain mobile wallet that supports USDT on all major networks including Ethereum, Tron, Solana, and BNB Chain. It provides a unified view of USDT holdings across different blockchains, making it a convenient option for users who hold USDT on multiple networks.

Hardware Wallets

Ledger and Trezor hardware wallets support USDT on Ethereum and other supported networks. For large USDT holdings, hardware wallets provide the strongest security by keeping private keys offline. This is particularly important for stablecoins, since large USDT balances represent significant real-world value.

Tether Resources

How to Buy Tether?

USDT is available on virtually every cryptocurrency exchange and is one of the easiest digital assets to acquire. It is often the first cryptocurrency that new users buy as a stepping stone to trading other assets.

Centralized Exchanges

USDT can be purchased directly with fiat currency on most major exchanges including Coinbase, Kraken, Binance, and OKX. You can also acquire USDT by trading other cryptocurrencies — on most exchanges, USDT pairs are the most liquid market for any given asset. When withdrawing, pay careful attention to the network you select. Withdrawing on Tron (TRC-20) is typically cheapest with fees well under $1, while Ethereum (ERC-20) withdrawals may incur higher gas fees depending on network congestion. Always double-check that your receiving wallet supports the same network.

Decentralized Exchanges

USDT can be swapped on any major DEX. On Ethereum, Uniswap and Curve are popular choices — Curve is especially efficient for stablecoin-to-stablecoin swaps due to its specialized bonding curve. On Solana, Jupiter aggregates the best rates across multiple liquidity sources. Each blockchain ecosystem has DEXs where USDT is one of the most liquid trading pairs.

Latest Tether News

Tether continues to dominate the stablecoin market with the largest market capitalization and highest trading volume. The company has expanded its business beyond USDT to include investments in Bitcoin mining, AI infrastructure, and emerging market payment solutions. Tether's CEO Paolo Ardoino has positioned the company as a broader technology and financial infrastructure provider.

Regulatory scrutiny of stablecoins continues globally, with the European Union's MiCA regulation, proposed US stablecoin legislation, and frameworks in jurisdictions like Hong Kong and Singapore all shaping how stablecoins like USDT operate. These regulatory developments represent both a challenge and an opportunity, as clear rules could provide legitimacy while potentially requiring changes to operations. USDT vs USDC comparisons remain a common topic, with USDT leading in global trading volume and emerging market adoption while USDC is often preferred in US-regulated contexts. Despite this competition, USDT maintains its position as the most widely used stablecoin worldwide.