Stablecoins Explained: USDT vs USDC and What "Backed" Really Means
Stablecoins are the quiet workhorses of crypto — the dollars people actually trade, save and move around with. If you have used an exchange, you have probably touched one. Here is what they are, and how the two biggest, USDT and USDC, differ.
Key takeaways
- A stablecoin is a crypto token designed to hold a steady value, usually one US dollar.
- USDT (Tether) is the biggest and most liquid; USDC (Circle) is generally viewed as more transparent.
- "Backed" only matters if the backing is real and verifiable — and even good stablecoins can briefly lose their peg.
Why stablecoins exist
Crypto is volatile. Stablecoins solve a simple problem: how do you hold value on a blockchain without riding Bitcoin's rollercoaster? A stablecoin pegged to the US dollar lets you park funds, move money between exchanges in seconds, and trade in and out of volatile coins — all without cashing out to a bank. They are the dollars of the crypto economy.
USDT vs USDC
USDT (Tether) is the original and by far the most traded stablecoin. Its huge liquidity means it is accepted almost everywhere, which is its main strength. Historically it has faced questions about the exact make-up of its reserves, though it now publishes regular reports.
USDC (issued by Circle) is generally regarded as the more transparent and regulation-friendly option. It publishes regular attestations of the reserves backing it, and is popular with users and institutions who prioritise that clarity.
In practice, many people use USDT where they need maximum liquidity and USDC where they want more transparency. Both are widely supported on the major exchanges.
What "backed" really means
A dollar stablecoin is only as good as what stands behind it. The healthiest models hold cash and short-term government debt equal to every token issued, verified by regular third-party reports. Be wary of stablecoins that are vague about their reserves — and be especially wary of algorithmic stablecoins that try to hold their peg with clever code rather than real assets. History has some spectacular failures in that category.
The risks
- Depeg risk. A stablecoin can slip below its peg if confidence drops. USDC briefly traded under a dollar in March 2023 during a US banking scare, then recovered — a useful reminder that "stable" is not "guaranteed".
- Centralisation. Major stablecoins are run by companies that can freeze addresses to comply with law enforcement. That is reassuring to some and a drawback to others.
Bottom line
Stablecoins are genuinely useful — for parking value, moving between platforms, and using DeFi. Stick to the large, transparent ones, know who backs them, and never assume the peg is unbreakable.
Frequently asked questions
What is the difference between USDT and USDC?
Both aim to hold a value of one US dollar. USDT (Tether) is the largest and most widely traded. USDC (issued by Circle) is generally seen as more transparent and regulation-friendly, publishing regular attestations of its reserves. Many users hold USDT for liquidity and USDC when they prioritise transparency.
Are stablecoins safe?
Reputable stablecoins are stable most of the time, but "stable" is not "guaranteed". A stablecoin can lose its peg if confidence in its backing wavers — USDC briefly fell below a dollar in March 2023 during a US banking scare before recovering. Treat stablecoins as a tool, understand who backs them, and avoid obscure or algorithmic ones.
Related reading
This article is general information for Australian and global crypto users, not financial, tax or legal advice. Crypto is volatile and you can lose money. Always do your own research and, where relevant, speak to a licensed adviser or registered tax agent. We may earn a commission from some links, at no cost to you — it never changes what we recommend.