For educational purposes only; not investment advice. Investing may result in loss.
Direct answer
A funding rate determines the periodic payment exchanged between traders who hold long and short positions in a perpetual futures contract. It is not normally a fee kept by the exchange. When the rate is positive, longs pay shorts; when it is negative, shorts pay longs. The mechanism creates a holding cost or benefit that helps keep the perpetual contract price aligned with its spot or index reference.
Funding is assessed only when a position is open at the platform’s funding timestamp. The usual calculation is:
Funding payment = position notional x funding rate
The base is the position’s notional value, not merely the margin posted. A platform may use a mark price, contract size, multiplier, or inverse-contract formula to determine that notional. Funding intervals and formulas also differ by venue and contract: some settle hourly, while others default to every 8 hours and may change frequency in stressed markets. Traders must check the current contract specification rather than assume one universal schedule.
- Funding intervals
- 21
- Funding rate per interval
- 0.01%
Outputs are educational approximations. They exclude venue rules, taxes, latency, oracle behavior, and other protocol-specific parameters unless shown.
How it works
Expiry-dated futures have a final settlement date that pulls the futures price toward the reference price as expiry approaches. A perpetual contract has no expiry, so it needs another economic link. Funding supplies that link through recurring transfers between the two sides of the market.
Suppose a perpetual trades above its spot index. The platform’s premium calculation may produce a positive funding rate. Long holders who remain open at the funding timestamp then pay short holders. That cost can discourage additional leveraged longs and can attract traders who buy spot while shorting the perpetual, putting downward pressure on the premium. If the perpetual trades below the index, the rate may become negative and the direction of payment reverses.
The platform does not directly force the traded price to change. It changes the economics of holding each side. Actual formulas commonly combine a premium index with an interest-rate component, apply a time-weighted average, and impose caps or floors. An estimated next rate can continue changing until the calculation window closes, so a displayed forecast is not necessarily the final settled rate.
Funding is separate from trading fees and borrowing interest. Trading fees arise when orders execute. Borrowing interest comes from financing borrowed assets. Funding applies to an eligible perpetual position at a specified timestamp. A trade can incur all three costs.
Example
A trader posts 2,000 USDT of margin and opens a 5x long position with a 10,000 USDT notional value. If the funding rate is +0.01% at an 8-hour funding timestamp, the payment is:
10,000 x 0.01% = 1 USDT
If the same rate settles three times in a day, the trader pays 3 USDT. If crowded positioning pushes each settled rate to +0.10%, the daily funding cost becomes 30 USDT, or 1.5% of the original 2,000 USDT margin. Over 10 days at that unchanged rate and position size, funding would total 300 USDT before trading fees, slippage, and price profit or loss.
Now consider a 100,000 USDT long position that gains 1% over two days, producing a 1,000 USDT price gain. If six funding settlements average +0.15%, total funding is 900 USDT. Fees and slippage could consume most or all of the remaining 100 USDT. Getting the price direction right does not guarantee a profitable trade after carrying costs.
A negative rate is not free money either. A 50,000 USDT long position receiving 0.05% collects 25 USDT at one funding timestamp. A 3% adverse price move loses 1,500 USDT before leverage effects on the trader’s margin. Funding changes carrying cost; it does not neutralize directional risk.
Risks
Funding paid from a position or account reduces equity and can bring liquidation closer. The fee is calculated from notional exposure, so leverage makes it large relative to posted margin. Platforms can also change rate caps, formulas, or funding intervals, particularly during volatile markets.
A so-called funding-rate arbitrage usually pairs a spot position with an opposite perpetual position. This can reduce directional exposure, but it does not eliminate basis risk, execution mismatch, trading fees, borrowing costs, liquidation risk, asset depegging, custody risk, or exchange failure. A high displayed annualized rate is not a guaranteed yield because future rates can fall or reverse.
Margin mode affects where the payment lands. Under isolated margin, a funding debit may reduce the margin assigned to that position. Under cross margin, the debit may reduce shared account equity and therefore affect other positions. Exact treatment is platform-specific.
Before trading, stress-test both price and funding. For example, assume the funding rate rises to three times its current level for two days while the market moves 5% against the position. Then check whether account equity would remain above maintenance requirements. This does not forecast the market; it reveals how sensitive the trade is to carrying cost and leverage.
Common misconceptions
Myth 1: A positive rate means the price is about to fall
A positive rate shows that longs pay at that funding timestamp. It may indicate strong demand for leveraged long exposure, but positive funding can persist during a rising market. The sign alone is not a timing signal.
Myth 2: The side receiving funding must be profitable
Funding income may be much smaller than an adverse price move. Trading fees, slippage, borrowing costs, and liquidation risk also affect the result. Receiving funding does not make total profit positive.
Myth 3: Funding is calculated from posted margin
The usual base is position notional. A 1,000 USDT margin deposit supporting a 10,000 USDT position generally produces funding based on about 10,000 USDT, subject to the contract’s exact notional formula.
Myth 4: A displayed annualized rate can be locked in
Annualized figures often extrapolate a current or predicted periodic rate. The next settled rate can be lower, higher, or negative. Funding is not a fixed-rate deposit.
Related topics
Sources
- Funding rates (International Derivatives) - Coinbase (accessed: 2026-08-20)
- Perpetual funding fee mechanism - OKX (accessed: 2026-08-20)
- Introduction to Funding Rate - Bybit (accessed: 2026-08-20)
- Understand the Risks of Virtual Currency Trading - CFTC (accessed: 2026-08-20)