What Are Stablecoins and USDT? Are They Actually Safe?
If you’ve ever opened a crypto exchange, seen pairs like BTC/USDT or ETH/USDT, and wondered “what is USDT, and why is everything priced in it?”, this article explains it simply: what a stablecoin is, what people use it for, and — most importantly — whether it’s actually safe.
What is a stablecoin?
A stablecoin is a cryptocurrency designed to hold a stable value, usually pegged 1:1 to the US dollar (1 token = $1). Unlike Bitcoin, whose price swings wildly, a stablecoin tries to stay at exactly $1 at all times. The biggest ones are USDT (Tether) and USDC.
To understand why ordinary crypto is so volatile that stablecoins had to be invented, read what is Bitcoin alongside this — it makes the picture much clearer.
How the 1:1 peg is meant to work
The idea is that the issuer (for example, the company Tether) claims to hold reservesbacking every token it issues — things like cash and US government bonds. If they issue 1 billion USDT, they should hold $1 billion in assets to back it. In theory, that means you can always redeem 1 USDT for $1. It’s this confidence that keeps the price sitting at $1.
What people use stablecoins for
- Parking value without cashing out to baht — after selling a coin but before you want the money back in your bank, you hold it as USDT and wait for the next opportunity.
- Trading pairs — most crypto-to-crypto trading is priced in USDT, so it acts as the common denominator for buying and selling.
- Moving value between exchanges — you can shift funds across platforms quickly without converting back to baht first.
- Avoiding volatility temporarily — when the market drops, many people move into a stablecoin to preserve value for now.
Because most pairs are priced in USDT, Binance TH’s crypto-to-crypto pairs at 0.10% often involve USDT pairs. To see where it’s cheapest, read the cheapest crypto fees in Thailand or compare directly on the exchange comparison page.
Risks people overlook
The word “stable” does NOT mean risk-free. Here’s what you should understand before holding one:
- It can depeg — in a crisis, a stablecoin can lose its 1:1 value. A major stablecoin has crashed to near zero before.
- Reserve transparency varies — issuers disclose different amounts about their reserves, and some have been questioned over whether they are fully backed.
- Counterparty risk — you rely on the issuer and the exchange. If either one has a problem, so does your money.
- Pegged to USD, not THB — holding USDT still carries USD/THB exchange-rate exposure. If the dollar weakens against the baht, your value in Thai terms drops too.
Frequently asked questions
›What’s the difference between USDT and USDC?
Both are pegged 1:1 to the dollar, but they’re issued by different companies with different reserve policies and transparency. Overall USDT has more liquidity and trading pairs, while USDC is often seen as clearer about its reserves.
›Is holding USDT 100% safe?
Nothing is 100% safe. A stablecoin can depeg in a crisis, and you still rely on the issuer and the exchange. It’s safer than a volatile coin, but it is not risk-free.
›Can I earn interest on USDT?
Some exchanges offer yield for depositing USDT, but the higher the return, the more hidden risk it usually carries. Read the terms fully and never deposit more than you can afford to risk.
Ready to start for real?
For beginners in Thailand, Binance TH is a sensible first pick — crypto pairs at just 0.10% (the cheapest here), Thai SEC licensed, and free THB deposits via PromptPay QR.
*Affiliate link — we may earn a commission if you sign up through it, at no extra cost to you. Not investment advice.
⚠️ For education only — not investment advice. Stablecoins carry risk and may not always hold their pegged value. Always do your own research and decide for yourself.