How Funding Rates Work in Perpetual Futures

FOR PROFESSIONAL CLIENTS ONLY

For Professional Clients Only. Crypto CFDs are complex, leveraged derivatives that carry a high level of risk and may not be suitable for all investors. Due to leverage, losses may exceed deposits. The value of cryptoassets can be highly volatile and can move rapidly. Professional Clients do not benefit from certain protections available to retail clients. This communication is provided for information purposes only and does not constitute investment advice, a personal recommendation or an offer to buy or sell any financial instrument.

Crypto CFDs are not available to retail clients.

Funding rates are the mechanism that keeps perpetual futures prices anchored to the underlying spot market. Because perpetual contracts have no expiry date, they cannot converge to spot through natural settlement. Instead, periodic payments between long and short position holders create an incentive that pulls the contract price toward spot.

Understanding funding rates is essential for anyone trading crypto perpetual futures. They directly affect the cost of holding a position, can signal market sentiment extremes, and form the basis of certain arbitrage strategies including funding rate arbitrage.

What is a funding rate in perpetual futures?

The funding rate is a periodic payment exchanged directly between traders holding long and short positions. It is not a fee collected by the exchange — it is a transfer between counterparties.

When the perpetual contract trades above the spot price, the funding rate is positive: long positions pay short positions. This increases the cost of being long and creates an incentive for new short sellers, which pushes the perpetual price back down toward spot.

When the perpetual trades below spot, the rate turns negative: short positions pay long positions. This incentivises new buyers and pushes the contract price back up.

How is the funding rate calculated?

Most platforms calculate funding rates using two components: the interest rate component and the premium/discount component.

Premium / discount component

This is the primary driver. It is calculated as the difference between the perpetual contract's mark price and the spot index price, expressed as a percentage. A large positive premium means the perpetual is trading significantly above spot, which drives the rate higher for longs.

Interest rate component

Some platforms apply a fixed baseline interest rate — typically 0.01% per funding interval — to reflect the cost of capital. This means the funding rate is rarely exactly zero even when the market is balanced.

Funding intervals and payment timing

Most centralised crypto derivatives platforms settle funding every eight hours — typically at 00:00, 08:00, and 16:00 UTC. Some platforms have moved to hourly funding intervals to reduce market distortion. The payment is calculated on the notional position size at the moment of settlement.

Example: a trader holds a long position worth $100,000 in BTC perpetuals. The funding rate at the next settlement is +0.05% (positive, so longs pay shorts). The funding payment would be $100,000 x 0.05% = $50, deducted from the trader's account.

A seemingly small rate compounds quickly over extended holding periods. A +0.05% rate paid three times per day equals 0.15% per day, or approximately 4.5% per month — a meaningful drag on a leveraged position.

Funding rates as a market sentiment indicator

Beyond their mechanical role, funding rates are widely tracked as a real-time sentiment indicator. Persistently high positive funding rates suggest the market is heavily positioned long — often interpreted as a sign of crowded positioning and potential vulnerability to a correction.

Negative funding rates — where shorts pay longs — are less common and may indicate extreme bearish sentiment, sometimes preceding short squeezes. Professional traders monitor funding rate history alongside open interest data to assess overall market positioning.

Funding rate arbitrage

Funding rate arbitrage (sometimes called cash-and-carry with perpetuals) involves simultaneously holding a spot position in the opposite direction to capture the funding payment. For example, holding a long spot position in BTC and a short perpetual position of the same size theoretically neutralises directional risk while earning the positive funding rate. This strategy carries execution risks including basis risk, liquidation risk on the leveraged leg, and funding rate reversals.

How funding rates affect hedging strategies

Traders using perpetuals to hedge an existing crypto portfolio need to account for funding costs as a structural expense. A long spot position hedged with a short perpetual will receive positive funding when rates are high — but during periods of negative funding, the hedge itself becomes a cost.

Modelling cumulative funding costs over the intended hedging period, and setting margin buffers that account for adverse rate swings, is standard practice in professional-grade portfolio hedging.

Funding rates summed up

• Funding rates are periodic payments between long and short perpetual holders — not exchange fees.
• Positive funding rate: longs pay shorts, indicating bullish positioning. Negative: shorts pay longs, indicating bearish positioning.
• The rate is primarily driven by the premium or discount of the perpetual price vs the spot index.
• Most platforms settle funding every 8 hours; some have moved to hourly intervals.
• A 0.05% rate settled three times per day equals ~4.5% per month — a material cost for leveraged positions held over time.
• Funding rates are a real-time market sentiment indicator; extreme positive rates may signal crowded positioning.
• Funding rate arbitrage involves pairing a spot position with a perpetual to capture funding — this carries basis risk, liquidation risk, and rate reversal risk.
• This article is for professional clients only. Crypto CFDs are not available to retail clients.

Frequently asked questions

Crypto CFDs are high-risk leveraged products. Losses may exceed deposits. Negative balance protection is not available for professional accounts. Cryptoasset markets are highly volatile and trading may not be suitable for all investors. Capital at risk.

This article is provided for informational purposes only and does not constitute investment advice, a personal recommendation, or an offer to buy or sell any financial instrument. Crypto CFDs are complex, high-risk leveraged products available to professional clients only. Losses may exceed deposits.