Crypto 101 Daily

Tether (USDT) is one of the most-used cryptocurrencies in the world — but most people use it without ever thinking of it as an “investment.” It’s a stablecoin, the plumbing of crypto trading. Here’s a plain-language profile: what Tether is, what it’s for, and the honest risks — which are real and worth understanding.

What Tether is

Tether (ticker USDT) is a stablecoin — a cryptocurrency designed to hold a steady value of about one US dollar per coin, rather than swinging in price like Bitcoin. It’s issued by a company (also called Tether), which says each USDT is backed by reserves so that it can always be redeemed for roughly a dollar. It exists on many different blockchains, and it’s consistently one of the largest cryptocurrencies by total value and trading volume. If Bitcoin is the headline act, USDT is the cash float that keeps the whole market moving.

What it’s for

Tether’s job is stability and convenience. People use it to: park money in something dollar-stable without cashing out to a bank; move value between exchanges quickly; and trade in and out of volatile coins (most trading pairs are quoted against a stablecoin like USDT). In regions with unstable local currencies or limited banking, USDT is also used as a way to hold “digital dollars.” You’re not meant to profit from USDT going up — the whole point is that it doesn’t move. It’s a tool, not a bet.

How it works, briefly

The idea is simple: for every USDT in circulation, Tether says it holds reserves (such as cash and cash-equivalent assets) to back it, so the coin stays pegged to the dollar. When demand changes, USDT is issued or redeemed to help maintain that peg. The mechanism depends entirely on the backing being real and sufficient — which is exactly where the debate about Tether lives.

The honest risks

This matters, so read it. First, reserve and trust questions: Tether has historically faced scrutiny and criticism over the transparency and composition of its reserves, and whether they fully back all coins. It has published attestations and made changes over time, but some critics remain skeptical — and because it’s issued by a private company, you are trusting that company. Second, depeg risk: like any stablecoin, USDT could in principle lose its peg in a crisis or loss of confidence, even if it has generally held it. Third, centralization and freezing: the issuer can freeze USDT at specific addresses (e.g. at the request of authorities), so it’s not censorship-resistant like Bitcoin. Fourth, regulatory risk: stablecoins are a major focus of regulators, and rules could change how USDT operates. None of this means USDT is doomed — it’s used massively every day — but “stable” is a goal, not a guarantee. This is education, not financial advice.

Who it might suit (and how to think about it)

Understanding Tether is essential for any beginner, because you’ll bump into USDT constantly on exchanges. If you ever hold it, treat it as a practical tool for stability or trading rather than an investment, prefer keeping significant savings in more transparent or regulated options where possible, and never assume any stablecoin is completely risk-free. Many beginners use small amounts of a stablecoin simply to move between trades. This is education, not financial advice.

Key takeaways

Tether (USDT) is the largest stablecoin — a coin designed to stay worth about one US dollar, issued by a company that says it holds reserves to back it. It’s used for stability, moving money between exchanges, and trading against volatile coins, not for price gains. Honest risks include long-running questions about its reserves and transparency, potential depeg risk, the issuer’s ability to freeze funds, and regulatory uncertainty. It’s a tool you should understand — and “stable” is never a guarantee. This is education, not financial advice.

New here? This builds on what a stablecoin is, the danger of a depeg, and the broader question of whether stablecoins are safe.