CoinProfitTools
Crypto profit, fee & risk calculators
Estimate how much funding you will pay or receive (per interval / day / week / month) on perpetual futures positions.
Funding rates are periodic payments between long and short holders on perpetual futures contracts. They keep the perpetual price close to the spot index price. When funding is positive, longs pay shorts; when negative, shorts pay longs.
Input your position notional (your full exposure), the funding rate expressed as a percentage per funding interval (most exchanges show funding in %), the funding interval length (hours), and your side (long/short).
The calculator computes funding paid/received per funding interval and extrapolates to daily, weekly and monthly amounts. It also reports an approximate annualized funding percentage for perspective (simple annualization, not guaranteed).
Position notional = $10,000, funding rate = 0.01% per 8h, side = long.
Funding per interval = 0.0001 × 10,000 = $1 (long pays $1 to shorts). Per day (3 intervals) = $3. Per month ≈ $90. If the funding rate flips sign, the opposite side pays.
On highly leveraged positions, funding costs accumulate quickly and can erode profits or increase losses. For long-term perpetual positions, funding can be a major P&L driver. Traders use funding calculators to:
• Check recent funding rate history before opening long-term positions.
• Consider using lower leverage to reduce the absolute funding dollar cost.
• If you are short a coin and funding is consistently negative, you may earn funding rather than pay it (but watch volatility and liquidation risk).
• Use exchange-provided funding values where possible — public APIs usually expose the next funding rate.
Funding schedules depend on the exchange. Many major exchanges (e.g., Binance, Bybit, BitMEX) charge funding every 8 hours (3 times per day). Some platforms have hourly or 24-hour funding. Always check the exchange's funding schedule — this calculator allows you to set the funding interval so you can model any schedule.
The sign of the funding rate decides who pays. When the funding rate is positive, longs pay shorts; when it is negative, shorts pay longs. Exchanges compute the funding rate using index/mark price gaps and interest-rate components. This means funding direction can flip frequently during bullish or bearish pressure.
No. Trading fees go to the exchange or market makers and are charged per trade. Funding payments are transfers between traders (long ↔ short) and do not go to the exchange. However, funding can be larger over time than trading fees for leveraged positions, so both should be considered when planning a trade.
Traders use funding data to decide trade duration and side. For example, if funding is high and positive, longs pay—this can be costly to hold long-term and may favor shorting or hedging. Some strategies harvest funding when rates are consistently in your favor, but this requires careful risk management because funding can reverse quickly.
Yes. Funding payments change your margin balance. If you pay funding repeatedly it reduces your available margin and can push you closer to liquidation. Conversely, receiving funding increases your margin buffer. When sizing leveraged positions, always include expected funding costs in required margin calculations to avoid surprise liquidations.