What is a stablecoin, in plain words, and why does it exist?
Stablecoins are the part of crypto that tries not to move. This article explains what they are, what they are used for, and where the catch is.
Published September 30, 2026 · 2 min read
Key takeaways
- A stablecoin is a token that aims to track a reference, usually the US dollar.
- Its steady value makes it more usable for spending and holding than volatile coins like BTC or ETH.
- USDT and USDC are two widely used dollar stablecoins.
- Stability is a design goal, and a stablecoin can drift from its target (depegging risk).
What is a stablecoin in simple terms?
A stablecoin is a crypto token designed to hold a steady value against a reference, most often the US dollar. One unit aims to stay near one dollar. It lives on a blockchain and moves over blockchain networks like any other crypto, so it can be sent and received in the same way. The difference is the price behaviour: it is built to stay put rather than rise and fall.
Why do people need a stablecoin?
Coins like BTC and ETH are volatile, so the value of a balance can change noticeably. A steady value makes a stablecoin more usable for everyday purposes.
- Spending: a balance that aims to stay near a dollar is easier to plan with.
- Holding: it is less exposed to the price swings of volatile coins.
- Moving: it travels over blockchain networks like other crypto.
In short, it keeps the technology of crypto while dropping much of the price uncertainty.
Which stablecoins are the most common: USDT and USDC?
USDT and USDC are two widely used dollar stablecoins. In a multi-asset wallet they are the steady-value assets, sitting alongside volatile BTC and ETH. The table below shows how these four differ in purpose, not in price. Both stablecoins share the same design goal of staying near one dollar.
| Asset | Type | Aim | Main thing to remember |
|---|---|---|---|
| USDT | Dollar stablecoin | Stay near one dollar | Can drift from its target (depegging risk) |
| USDC | Dollar stablecoin | Stay near one dollar | Can drift from its target (depegging risk) |
| BTC | Volatile coin | No steady target | Its value can change noticeably |
| ETH | Volatile coin | No steady target | Its value can change noticeably |
Can a stablecoin lose its value?
Yes, in principle. A steady value is a design goal, not a guarantee, and a stablecoin can drift away from its target. This is called the depegging risk. It is worth keeping in mind when deciding how much to hold and for how long. This is general information, not investment or financial advice.
How can you hold and spend stablecoins in Nexus Pay?
Nexus Pay is one option: a crypto wallet with a Visa card, opened inside Telegram. It is not a bank. The wallet holds USDT, USDC, BTC and ETH, and USDT and USDC can be deposited via TRC-20, ERC-20, BEP-20 and TON. Swaps between coins inside the wallet cost 0% and use the exchange rate with no markup, and you see the amount you receive before you confirm. Moving money to the card costs 0.1%, so 1000 USDT becomes $999.00 on the card. The card only spends the available balance, with no credit and no overdraft.
What should you check before sending a stablecoin?
Blockchain transfers are irreversible, so a few checks matter more than the coin itself.
- Network: each deposit address belongs to one network, and a coin sent through a different one will not arrive and cannot be returned.
- Minimum: every network has a minimum deposit amount shown in the app, and deposits below it are not credited.
- Timing: crediting is automatic after network confirmation, from a few minutes to about an hour depending on the blockchain.
Nobody can bring back a transfer sent to the wrong address.
Common questions
Is a stablecoin the same as a real dollar?
No. It is a crypto token that aims to stay near one dollar, and it moves on blockchain networks. Its steady value is a design goal, not a guarantee.
Do USDT and USDC work the same way?
Both are widely used dollar stablecoins that aim to hold a steady value near one dollar. Both are handled as the steady-value assets next to BTC and ETH in the wallet.
Does swapping a stablecoin for BTC or ETH cost anything?
Swaps inside the wallet cost 0% and use the exchange rate with no markup. The amount you receive is shown before you confirm.
Can I lose money holding a stablecoin?
A stablecoin can in principle drift from its target, which is the depegging risk. This is general information, not investment advice.
What happens if I send a stablecoin through the wrong network?
It will not arrive and cannot be reversed. Each deposit address belongs to one network, so always match the network to the address.
Open Nexus Pay in Telegram and keep USDT and USDC in one wallet
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Open Nexus PayRelated reading
USDT vs USDC Compared: What Actually Differs for Everyday SpendingUSDT and USDC are both dollar-pegged stablecoins, but issuers, reserve transparency, and platform support vary. Compare the two for funding a spending card.
What If a Stablecoin Loses Its Peg? Understanding De-pegging RiskA stablecoin aims to maintain a 1:1 value with its pegged currency, but this peg is not guaranteed. Learn what backs a stablecoin and how to assess risk.
What is the difference between USDT and dollars in an account?USDT is a stablecoin meant to track the US dollar, but it moves on blockchains, not through banks, and can drift off its peg. Here is how the two differ.
Why a stablecoin is worth about one dollar, and when it isn'tWhy a stablecoin trades near $1: the issuer's dollar backing and traders who buy low and sell high. Plus what depegging is and why the peg can slip.