Do Brokers Allow Stablecoins Like USDC or USDT to Trade?

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A small but growing number of brokers now accept stablecoin deposits. Interactive Brokers currently takes USDC. Tastytrade goes further with USDC, USDT, PYUSD, and RLUSD. Most other major brokers still do not support stablecoin funding at all.

With brokers that do, the stablecoin converts to US dollars on arrival. You hold cash, not crypto. From there you can buy stocks, trade futures, or access spot markets like any other funded account.

Which brokers accept stablecoin deposits

Tastytrade: 

What sets Tastytrade apart is coin coverage. It accepts USDC, USDT, PYUSD, and RLUSD, which makes it the only major traditional broker currently taking USDT. That works because ZeroHash sits between the stablecoin and the brokerage account, handling conversion and custody on the broker's behalf, so Tastytrade itself never touches USDT directly.

The feature launched in July 2025, within days of the GENIUS Act being signed into law, and has been open to international investors from day one. For traders outside the US who deal with slow cross-border wires, that matters. Accounts need crypto trading enabled. If you want the widest broker compatibility across platforms, stick with USDC.

Interactive Brokers: USDC only

IBKR's stablecoin feature is narrower but comes with the infrastructure you would expect from a broker serving 170+ global markets. USDC deposits work on Ethereum, Solana, and Base, converting to USD on arrival. The feature launched January 15, 2026, starting with eligible US clients and expanding globally in phases.

IBKR charges nothing on its end. ZeroHash applies a tiered conversion fee of 0.35% on the first $5,000, 0.20% on the next $15,000, and 0.10% above $20,000 (per the IBKR stablecoin page). You also pay standard gas fees. Per-transaction and daily caps are $25,000, with a $100,000 monthly ceiling.

Stablecoin vs wire vs ACH: how funding methods compare

Stablecoins are faster and always on, which matters most when you need to move capital outside banking hours. ACH is still the simplest option for routine deposits and usually costs nothing.

Risks to understand before you deposit

Stablecoins are designed to hold a 1:1 peg with the US dollar, but they have slipped during periods of market stress. If the coin trades below $1.00 between when you send and when it converts, you receive slightly less than expected. This is a narrow window, but it exists.

The bigger concern is irreversibility. Blockchain transfers cannot be undone. Send to the wrong address or the wrong network and the funds are gone. Neither the broker nor ZeroHash can recover them. Also keep in mind that during the transfer itself, your funds are not covered by FDIC or SIPC protections. Once the stablecoin converts to USD and lands in your brokerage cash balance, standard protections apply.