Funding rates · calculation
How perpetual funding payments are calculated
A perpetual funding payment is commonly estimated as position notional multiplied by the funding rate for that settlement interval. The simple formula is useful for orientation, but the contract's mark price, multiplier, funding cap and schedule determine the actual transfer. Always use the venue's current specification for a live position.
Start with position notional
Notional is the value on which the funding mechanism is usually applied. It is not necessarily your collateral. Leverage changes how much collateral supports the position, while price movement can change notional before settlement.
Use the interval rate
A displayed 0.01% is meaningful only with its interval. Some venues settle at different schedules or update the projected rate. Do not treat an eight-hour rate as an hourly rate, or assume a projected rate is final.
Confirm who pays
The sign convention determines the payment direction. A positive rate often means longs pay shorts, but the venue documentation controls. A calculation without the payment direction answers only half the question.
The working formula
For a simple estimate, Funding payment = position notional x funding rate. If a 5,000 USDT position is open at a 0.01% funding settlement, the payment is approximately 0.50 USDT. The direction depends on the rate convention: one side pays and the other receives. The example excludes trading fees, spread, interest and any change in the position before settlement.
The most important input is the notional recognized by the venue at the funding event. For linear contracts it may be close to quantity multiplied by the relevant price; inverse and other contract types can use a different calculation. Read the contract page rather than importing a formula from another market.
Why leverage is not the funding formula
Leverage is often mistaken for a multiplier on the funding rate. It is not. A 10x position can create a large notional from a small collateral balance, and funding is generally based on that notional. Leverage matters because it increases sensitivity to price movements and liquidation risk, not because it changes a stated percentage by itself.
For example, 500 USDT of collateral supporting a 5,000 USDT position has 10x leverage. A 0.01% funding payment applied to a 5,000 USDT notional is still about 0.50 USDT. If price changes the notional, or if the venue uses mark-price rules, the actual settlement can differ from an earlier estimate.
Intervals and projected rates
Funding is not a yearly interest rate. It is a periodic transfer at a published time or schedule. A rate can update between the moment you inspect it and the moment funding is charged. It can also switch sign before the next settlement, especially in volatile markets.
To compare two venues, normalize carefully: identify each rate, its interval, the contract type, the underlying asset and the time captured. Annualizing a single observation may create a dramatic number that says little about the next settlement or the rate after it. Keep the raw interval visible.
What a calculation does not cover
Funding does not replace a full position-cost analysis. A trade can incur maker or taker fees, spread, slippage, borrowing costs where applicable, and losses from adverse price movement. A market-neutral structure can still face execution mismatch, basis movement and liquidation if collateral is insufficient.
Use a calculation as a pre-trade sanity check and verify it again after the position is established. The relevant tool is a live venue display or MyCoinWay's Funding Rate Scanner for comparative research, not a promise of an executable outcome or future payment.
Before you act
- Use current venue documentation for the applicable contract type.
- Calculate from position notional, not just posted collateral.
- Record the rate's interval and next settlement time.
- Treat projected funding as changeable until settlement.
Questions this page answers
Can I calculate funding from my wallet balance?
Not reliably. The payment generally relates to the eligible position notional and venue rules, not the available wallet balance alone.
Is a higher annualized funding number guaranteed income?
No. Annualizing assumes a rate persists. Rates, prices, execution costs and position eligibility can all change.
Methodology and limits
Examples are arithmetic illustrations, not trading advice or a venue-specific calculator. Contract values, mark-price rules and settlement conventions must be verified directly with the venue before relying on an estimate.