MEXC vs Bybit USDT Yield: Balance Interest or BYUSDT?

MEXC and Bybit let eligible USDT capital earn while supporting futures, but the settlement asset differs. MEXC Futures Earn rewards USDT directly in a futures account. Bybit's BYUSDT lets qualifying USDT Flexible Easy Earn savings support UTA positions while earning, but a BYUSDT balance does not automatically clear a USDT liability. Compare that settlement requirement alongside the applicable APR.

Start With the Settlement Coin

Bybit's launch announcement describes swapping USDT Flexible Easy Earn holdings into BYUSDT at 1:1. BYUSDT then serves as collateral in the Unified Trading Account, or UTA. Its Learn guide distinguishes the token from USDT: USDT losses can still carry interest obligations even when BYUSDT collateral is held.

Bybit describes manual repayment using BYUSDT converted to USDT at 1:1, without an additional service fee for that repayment conversion. Ordinary swaps, redemptions and yield conversions may have fees. The repayment exception should not be read as a waiver of borrowing interest, trading fees or funding payments.

MEXC's USDT route keeps the earning asset in USDT without a separate savings subscription or reward-token swap. Sufficient USDT is already the settlement asset for USDT obligations. Committed margin can still be restricted from transfer. This comparison is published by MEXC; see exchanges that pay interest on futures margin for other structures.

A 200-USDT Repayment Changes Both Balances

Suppose a UTA shows 10,000 BYUSDT and a separate 200-USDT liability. Assume one BYUSDT is worth one USDT, repayment is permitted, and there are no other positions, assets, fees, interest or valuation changes. The net asset value of these entries is 9,800 USDT.

Repayment reduces the liability and the asset balance together, leaving net value unchanged. Subsequent earning principal may be lower because fewer BYUSDT remain. Applicable financing costs depend on the actual liability and account rules; the example does not assume every negative balance immediately incurs interest.

The 9,800-USDT net value is not a transferable balance or liquidation threshold. Include actual funding, trading and financing charges when assessing futures margin yield after fees.

Compare Rates on Eligible Capital

MEXC's USDT card displays 5% base APR, up to 15 percentage points of position bonus, a 20% maximum, and a 100-USDT minimum balance. The maximum depends on qualification, and caps can limit earning principal. Leveraged position notional is not the interest-bearing amount.

Bybit's Help Center excludes ordinary Flexible Easy Earn's platform reward APR from BYUSDT. Use the applicable base rate and limits shown to your account. Older campaign ceilings do not establish today's return. Access also depends on identity verification, UTA and Savings eligibility, and regional restrictions.

BYUSDT provides a route for existing eligible Flexible savers to reuse capital in supported margin modes. The direct-USDT alternative is MEXC Futures Earn. Compare the same starting capital and earning period, then account for settlement costs. Neither route protects trading principal against losses or liquidation.