USDT vs USDC: Which stablecoin should you actually use for spending?

If you've spent any time in crypto, you've held one or both of these. USDT and USDC are the two dominant stablecoins, and for most day-to-day spending purposes they're interchangeable. Same peg. Same goal. One dollar in, one dollar out.

But interchangeable doesn't mean identical. The two differ in who issues them, how they're backed, which networks they're cheapest to move on, and in practice, where you're more likely to already have them. If you're spending crypto regularly rather than just holding it, those differences add up.
This article is a practical comparison for people who want to spend their stablecoins, not debate them.

What they are, briefly

USDT (Tether) is the largest stablecoin by market cap and trading volume. It's issued by Tether Limited and backed primarily by cash and cash equivalents. It's been around since 2014 and has the widest exchange and network coverage of any stablecoin.

USDC is issued by Circle and co-founded with Coinbase. It launched in 2018 and has built a reputation for regulatory transparency. Circle publishes monthly reserve attestations and holds its backing in cash and short-term US government bonds.

Both maintain a 1:1 peg with the US dollar. Neither has a material price difference in normal conditions. For a full breakdown of how each stablecoin is structured, see the stablecoin definitions on Spend Crypto or on here.

Where they differ for spending

Availability on exchanges

USDT has broader availability across exchanges globally, particularly in markets where Binance dominates: Southeast Asia, Eastern Europe, Latin America, the Middle East. If you're holding crypto on an exchange and want to move into stablecoins for spending, USDT is more likely to be the default option.

USDC is stronger in the US market and on Coinbase-adjacent infrastructure. If you're using Coinbase or Base Pay, USDC is the native stablecoin of that ecosystem.

For spending: Use whichever you already hold. Converting between them costs gas fees for no practical benefit at checkout.

Network availability and fees

Both USDT and USDC run on multiple networks. The network you choose matters more than the coin itself when it comes to what you actually pay in transaction fees.

On Cryptorefills, both USDT and USDC are accepted across all of these networks. The coin choice is less important than picking a low-fee network for the transaction size. Paying for a $10 mobile top up on Ethereum mainnet with a $5 gas fee makes no sense. The same payment on Tron or Solana costs fractions of a cent.

Transparency and trust

This is the one area where the two coins genuinely differ in substance.

Circle (USDC) publishes monthly attestation reports from a major accounting firm. The reserve composition is disclosed as cash and short-term US Treasuries. It's the more audited of the two.

Tether (USDT) has historically been less transparent, though it now publishes quarterly attestations and has significantly cleaned up its reserve disclosures. As of 2024 the concerns that dogged USDT earlier in its history have largely been addressed in practice. The peg has held consistently through multiple market cycles, including the 2022 crash.

For day-to-day spending on Cryptorefills, neither of these distinctions is likely to affect your transaction. The practical risk of either coin depegging on a $50 gift card purchase is negligible. Where it matters more is if you're holding large amounts for extended periods, but that's a different conversation.

Which exchanges give you which

The stablecoin you end up with often depends on where you got your crypto in the first place.

Binance users tend to accumulate USDT. It's the default trading pair across most Binance markets. BinancePay on Cryptorefills supports both, but USDT is what most Binance users already have.

Coinbase and Base Pay users tend to hold USDC. It's Coinbase's native stablecoin and earns yield within their ecosystem.

Kraken, KuCoin, Gate.io and most other major exchanges carry both.

For spending on Cryptorefills specifically

Both USDT and USDC work across the full catalogue: gift cards, mobile top ups, eSIMs, flights and stays. There's no product on Cryptorefills that accepts one but not the other.

Cryptorefills' own transaction data shows that USDT accounts for the majority of stablecoin payments on the platform, consistent with its wider global dominance. But that's a reflection of what users happen to hold, not a recommendation. USDC works identically at checkout.

Why can't I pay with USDT in Europe?

One thing worth knowing if you're based in Europe: USDT is not compliant with the EU's Markets in Crypto-Assets regulation (MiCA). Tether has not obtained the e-money licence required to offer USDT within the European Economic Area, which led major exchanges including Coinbase, Binance and Kraken to delist USDT for EEA users from early 2025 onward. USDC, issued by Circle, is MiCA-compliant. Circle obtained authorisation from French regulators, making USDC the more accessible stablecoin option for users on European exchanges. On Cryptorefills, both USDT and USDC are accepted as payment methods, but if you're sourcing stablecoins through a European exchange, USDC is the one you're more likely to have access to.

The practical checklist when choosing:

Use USDT if:

• You're on Binance or a non-US exchange and already hold it
• You're paying from a region where USDT has stronger exchange liquidity (Southeast Asia, LatAm, the Middle East)
• You want maximum network choice. USDT has the widest coverage

Use USDC if:

• You're using Coinbase, Base Pay, or a US-based exchange
• You want the more audited reserve structure
• You're already holding it and conversion would cost more than it saves

In both cases:

• Avoid Ethereum mainnet for small purchases. Use Tron, Solana or Polygon instead
• Don't convert between USDT and USDC just for a purchase. The swap fee is rarely worth it
• If you're booking a flight or stay, stablecoins are the right call regardless of which one. They lock in the dollar value between search and checkout

The bottom line

The USDT vs USDC debate matters a lot more for people holding large positions than for people spending on everyday purchases. For spending, both work. The network you send on will have a bigger impact on your experience than the coin you pick.

Use whatever you already hold, on the cheapest network available. That's it.

Both are accepted on Cryptorefills across gift cards, mobile top ups, eSIMs, flights and stays. To see the full list of supported stablecoins and networks: Spend Crypto.