Calculate futures margin yield after fees with a USDT example covering execution fees, funding payments and the limits of advertised APR.Calculate futures margin yield after fees with a USDT example covering execution fees, funding payments and the limits of advertised APR.

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Futures Margin Yield After Fees: Calculate Your Net Return

Author: MEXC

Nov 11, 2026MEXC

4 min

Key Takeaways

Calculate futures margin yield after fees with a USDT example covering execution fees, funding payments and the limits of advertised APR.

To calculate futures margin yield after fees, compare Earn income with execution fees and net funding payments over the same period. A positive interest payment does not mean the position covered its costs: interest is calculated on eligible account principal, while trading fees and funding are calculated on position value.

Use Principal for Income and Position Value for Costs

MEXC's Futures Earn FAQ distinguishes interest-bearing principal from the position value used to determine a bonus tier. A 10,000 USDT eligible balance supporting a 50,000 USDT position does not make 50,000 USDT earn interest. The guide to earning interest on USDT while trading futures explains balance qualification and activation.

MEXC's futures calculation rules apply execution fees to the value of each filled trade and funding to position value at settlement. This difference in calculation bases matters more than comparing the percentages in isolation. Increasing exposure can raise trading costs without increasing the balance eligible for interest.

A 24-Hour USDT Example: Income Versus Costs

The worked example in How to Calculate Interest on USDT Futures Margin uses 10,000 USDT of principal and 50,000 USDT of qualifying position value. Its 5% base APR plus 5% position bonus gives approximately 2.74 USDT for one full day, assuming the entire principal qualifies for both components. That is a 10% combined APR in this example, rather than the advertised maximum.

To examine costs, assume a USDT-margined long position with a 50,000 USDT notional is opened and closed at the same price, with a hypothetical 0.02% execution fee on each fill. It passes through three funding settlements at an assumed positive 0.01% each, so the long pays funding. These fee rates and settlement assumptions are illustrative, not a quote for a particular contract or account.

Component	Calculation	USDT
Earn interest	10,000 × 10% ÷ 365	+2.74
Opening fee	50,000 × 0.02%	−10.00
Closing fee	50,000 × 0.02%	−10.00
Funding paid	50,000 × 0.01% × 3	−15.00
Earn income minus these costs	2.74 − 10 − 10 − 15	−32.26

The cost-adjusted result is approximately −0.323% of the 10,000 USDT principal for this illustrative period, before adding price PNL. The example keeps eligible principal and position value constant and assumes zero slippage and no other charges. In an actual account, fees and funding debits can reduce the balance used in later interest calculations.

Compare Extra APR With the Costs of Earning It

In the same example, a qualifying 10,000 USDT balance at the 5% base rate earns about 1.37 USDT per day without a position requirement. The assumed position bonus adds another 1.37 USDT. If a trader opens the position solely to obtain that bonus, the incremental reward should be compared with the full 35 USDT of execution and funding costs assumed above.

For a position the trader already intended to hold, enabling Earn for a qualifying balance can add interest without requiring another entry or exit. The comparison is therefore different: measure the extra income against any extra costs caused by qualifying for the bonus, while still including the existing position's costs in its overall result.

Check Break-Even and Count Each Charge Once

With zero funding and no other costs, earning back the example's 20 USDT round-trip fee would take about 7.3 days at an unchanged 10% APR on 10,000 USDT. This is a hypothetical fee-offset calculation, not a forecast. If funding continued to cost 15 USDT per day while interest stayed near 2.74 USDT, holding longer would not reach break-even under those unchanged assumptions.

Funding can also be received. MEXC's funding rules determine the payer from the rate's sign and the position's direction, and intervals vary by contract. Add actual funding credits and subtract actual funding debits; neither should be inferred from the Earn APR.

For reconciliation, use the fees recorded for every entry, exit and partial fill, the funding payments actually settled, and the Earn interest attributable to the matching period. Rates can differ by contract, account conditions, promotion and execution route. Check which charges the reported realized PNL already includes before subtracting anything again. If realized PNL already includes execution fees and funding, add Earn income only if it is excluded from that figure.

When starting from gross price PNL instead, use: combined trading and Earn result = gross price PNL + Earn income + funding received − funding paid − execution fees − other separately charged costs. This measures the combined result, excluding deposits, withdrawals and transfers. Actual fill prices already reflect execution slippage; do not subtract the same slippage again. Confirm applicable rates and principal caps on MEXC Futures Earn, then reconcile the estimate against credited interest and account records.

Risk Warning

Futures losses and liquidation can exceed Earn income. APRs, eligible principal and funding conditions can change during a holding period. Increasing exposure to qualify for a bonus also increases trading risk; none of the examples guarantees a net return.