Stablecoins in 2026: USDT, USDC, and what backs them
USDT and USDC are not the same product. The difference matters more in 2026 than it did in 2020, both for trading and for treasury management.
11/05/2026 · 13 min de leitura · Stablecoins · USDC · USDT · Fundamentals
Why stablecoins exist
Crypto needs a unit of account that does not move 10% in a day. Stablecoins fill that role: they are tokens that target a $1 peg, redeemable for $1 in fiat under defined conditions. The two dominant issuers are Tether (USDT) and Circle (USDC), with combined market cap exceeding $200B in 2026.
Without stablecoins, you would price everything in BTC or ETH, and your P&L would shift constantly even on a flat position. Stables let you exit a trade, hold value, and re-enter without converting back to fiat.
They are also the dominant rail for cross-border value transfer. In 2025, USDT moved more annual volume than Visa and Mastercard combined. The use case is no longer trading; it's payments and remittances at scale.
USDT (Tether)
Issued by Tether Holdings, registered in BVI. Backed primarily by US Treasury bills (around 80% of reserves as of Q4 2025), commercial paper has been wound down post-2022, plus secured loans and a small allocation to BTC and gold.
Reserves are attested quarterly by BDO Italia. They are not audited under PCAOB standards; the distinction matters for institutional buyers but matters less for everyday usage. Tether has redeemed billions during stress events without a peg break.
USDT operates on more chains than any other token: Tron (largest by volume), Ethereum, Solana, BNB Chain, Polygon, Avalanche, Arbitrum, Optimism. Cross-chain liquidity is the deepest in crypto.
USDC (Circle)
Issued by Circle, a US-registered company. Backed by short-duration US Treasuries and cash held at regulated US banks (BlackRock manages the Treasury portfolio). Monthly attestations by Deloitte and PCAOB-audited annually.
USDC has institutional preference in the US because Circle operates under US money-transmitter licenses and has voluntarily implemented blacklisting for OFAC-sanctioned addresses. Some consider this a feature (regulatory clarity); others a bug (censorability).
March 2023: USDC briefly broke its peg (depegged to $0.87) when Silicon Valley Bank failed and held $3.3B of Circle's reserves. SVB was bailed out, peg recovered, but the event reminded everyone that "fully backed" still depends on the banks holding the cash.
Other stablecoins worth knowing
DAI (MakerDAO): overcollateralized by crypto assets. More decentralized than USDT/USDC, but exposed to crypto-market stress in a way they aren't. Has held its peg through multiple cycles.
USDe (Ethena): synthetic dollar backed by ETH staking yield plus short perpetual hedges. Pays high yield in good market conditions but is exposed to negative funding rate environments. Caveat emptor.
PYUSD (PayPal), FDUSD (First Digital), TUSD (TrustToken): smaller players, lower trust, less liquidity. Generally not worth holding unless you have a specific arbitrage need.
Which one to hold
For active trading on most exchanges: USDT, because liquidity is deeper and pair coverage is wider. The marginal counterparty risk vs USDC is small.
For long-term holding of a stable position: split 50/50 between USDT and USDC. You diversify issuer risk at trivial inconvenience. If one breaks, you have time to react with the other.
For US users with regulatory sensitivity: USDC. Circle is the most US-aligned issuer. If your bank or accountant asks where your stablecoins are, USDC is the easier answer.
Network selection matters
Sending USDT on Ethereum costs $2-5 in gas. Sending USDT on Tron costs $1. Sending USDT on Arbitrum costs $0.05. For payments, Tron and Arbitrum are dominant. For DeFi, Ethereum mainnet still has the deepest liquidity.
Each chain version is a separate token. USDT-on-Ethereum is not the same on-chain asset as USDT-on-Tron; you need a bridge to convert. Always double-check the network when depositing or withdrawing.
OFFCODE supports USDT and USDC on Ethereum, Arbitrum, Base, Polygon, BSC, and Optimism. For deposits, use the cheapest network your wallet supports. For withdrawals, send to a network the destination wallet expects.
The peg break scenario
A stablecoin peg break is not theoretical. USDC depegged to $0.87 in March 2023. UST (Terra) collapsed to $0 in May 2022, taking $40B with it.
If you wake up to your stablecoin trading at $0.95, the first questions are: which issuer, what is the cause (banking, fraud, regulatory), how much of the supply is redeemable. For USDT and USDC, redemption windows are typically days, not hours.
The defensive move during a peg break: if you can redeem 1:1 with the issuer, do it. If you can swap into another stablecoin at small loss, do it. If you can't move because gas is congested and slippage is huge, wait it out. Most peg breaks recover within a week.
Yield on stablecoins
Holding USDT or USDC pays no yield by itself. Issuers keep the spread between their T-bill returns and the $0 they pay you. Circle in 2025 earned over $1B from this spread.
DeFi yield on stables (Aave, Compound, Morpho) typically pays 4-8% in 2026. The yield comes from borrowers paying interest. It's real yield, but you take smart contract risk and counterparty risk on the borrower side.
CeFi yield products (Nexo, others) have higher headline rates but worse risk profiles. After the 2022 collapses (Celsius, BlockFi, Voyager), the trust premium is high. Treat anything paying double-digit yield on stables with extreme skepticism.
Bottom line
Stablecoins are the most useful innovation in crypto for payments and treasury. They are not risk-free; both Tether and Circle have counterparty exposure to traditional banking and to their reserve management.
Hold them where they're useful, diversify across issuers if your balance is large, and never assume the peg is automatic. The peg holds because the redemption channel works. When it stops working, you'll find out fast.