Tether vs 
USDC
The two dollar giants differ mainly on transparency and reach. Tether (USDT) is the most-traded asset in crypto with unrivalled liquidity, and a reserve history that took years to become (mostly) audited; USDC is the compliance-first alternative — regulated US issuer, published attestations — with somewhat less reach on offshore venues. Traders tend to hold USDT where liquidity rules; institutions and cautious users lean USDC.
12 months, both starting at 100 (AUD)
USDT → 92 · USDC → 92| Measure | USDT | USDC |
|---|---|---|
| Market cap | A$257.7B | A$101.2B |
| Rank | #3 | #5 |
| Price | A$1.41 | A$1.41 |
| 90-day change (AUD) | +0.3% | +1.1% |
| 12-month change (AUD) | −8.3% | −8.3% |
| From all-time high | −27.3% | −18.5% |
| Supply model | No fixed maximum | No fixed maximum |
| AU exchanges we verify it on | check on-platform | check on-platform |
About Tether
Tether (USDT) is the largest stablecoin: a token designed to hold a value of one US dollar, backed by the issuer's reserves. It functions as the working cash of crypto markets — the most-traded quote currency across global exchanges.
About USDC
USD Coin (USDC) is a regulated US-dollar stablecoin issued by Circle, backed by cash and short-term US government securities with published reserve attestations. It's widely used for trading, payments and as the "safer pair of hands" among dollar tokens.
FAQ
Which is bigger, Tether or USDC?
By market value today: Tether (A$257.7B vs A$101.2B). Size measures money invested, not quality — but it does measure liquidity, which affects how easily you can buy and sell.
Which performed better this year?
Over the past 12 months in AUD terms: USDT −8.3%, USDC −8.3% — the chart above shows the whole path, which matters more than the endpoints. Past performance is no indicator of future results, in either direction.
Can I buy both in Australia?
Availability differs — check the where-to-buy section on each coin's page. Compare costs first on the fee calculator, and remember every crypto-to-crypto swap between them is a CGT event.
Should I hold USDT or USDC?
That's a personal decision we don't make for you — this page exists to make the structural differences clear so the choice is yours. What we'd say to anyone: understand what job each coin is designed for, size positions like the risk is real, and check the honest failure statistics before going further down the market-cap list.
Data from our market records (powered by CoinGecko), refreshed with the daily rebuild. General information only, not financial advice — we compare structure and history, we don't pick winners.