Perpetual cost calculator
Estimate entry fees, exit fees, and constant-rate funding. All rates are your assumptions, not current exchange quotes.
Set your assumptions
Values shown are illustrative. Change them to explore a scenario. Inputs stay in your browser and are not sent to an exchange or wallet.
Selected costs, net of funding
Positive funding means longs pay and shorts receive in this model. A negative total is a net credit for selected costs only. Prices and notional are held constant; inverse contracts, spread, slippage, margin, liquidation, and taxes are excluded.
The calculation
Entry fee + exit fee + signed funding. Funding = notional × rate per event ÷ 100 × events.
A worked example
At $10,000 notional, 5 bp on each side, and three positive 0.01% funding events, the selected costs are $13 for a long or $7 for a short.
Model limits
Positive funding means longs pay and shorts receive in this model. A negative total is a net credit for selected costs only. Prices and notional are held constant; inverse contracts, spread, slippage, margin, liquidation, and taxes are excluded.
Read the guide