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Guides · 3 min
Can funding fees increase liquidation risk?
Learn how funding payments reduce margin, why leverage makes the effect larger, and what to check before a settlement reaches your position.
Funding is usually small compared with a position's notional value, but it is paid from the capital supporting that position. Repeated payments can therefore move an account closer to liquidation even when the market price barely changes. The risk is most visible in leveraged positions, thinly funded isolated-margin trades and accounts carrying several positions at once.
Funding is not the liquidation trigger by itself
A liquidation engine normally compares account or position equity with maintenance-margin requirements. Funding affects the equity side of that comparison. When a trader owes funding, the exchange debits the payment at settlement. Depending on the venue and margin mode, it may come from available balance first or be deducted from position margin when available balance is insufficient.
equity after settlement = equity before settlement − funding paid
The funding payment does not need to be large enough to liquidate the trade on its own. It only needs to remove the remaining buffer while price losses, trading fees and maintenance margin are already consuming most of that buffer.
A leveraged example
Consider a $50,000 long position supported by $5,000 of margin. At a positive funding rate of 0.0300%, one settlement costs $15. That is only 0.03% of notional, but 0.30% of the margin committed to the trade. If the same rate persisted across three eight-hour settlements, the scenario cost would be $45, or 0.90% of the starting margin.
This example is a scenario, not a prediction. Future rates can rise, fall or reverse sign. Its purpose is to show why funding should be compared with margin as well as notional value.
Isolated and cross margin behave differently
With isolated margin, the capital assigned to one position is ring-fenced. A funding debit that reaches position margin reduces that position's liquidation buffer. Adding margin can widen the buffer, but it also increases the capital exposed to that trade.
With cross margin, available account equity can support multiple positions. That may postpone liquidation of one trade, but it connects the risks: funding and losses from one position can consume collateral protecting another. Exact deductions and liquidation calculations differ by exchange, contract type and portfolio-margin setting, so the venue's own rules remain authoritative.
What to check before settlement
- Payment direction. A positive rate normally means longs pay; a negative rate normally means shorts pay.
- Dollar payment. Multiply position notional by the displayed rate, using the exchange's contract specification.
- Available balance and margin mode. Know where the venue will deduct the payment.
- Liquidation buffer. Stress-test both an adverse price move and the next funding debit rather than treating them separately.
- Settlement interval. A one-hour schedule can create many more payments than an eight-hour schedule.
Use the funding comparison to see the current interval and a dollar estimate, then enter your own notional and leverage in the all-in cost calculator. The result is an estimate, not a liquidation-price calculation.