Funding Rate

Funding rate is a periodic payment exchanged between long and short perpetual futures holders that anchors the perpetual price to the underlying spot price through incentive alignment.

When the perpetual trades above spot (indicating bullish sentiment with more longs than shorts), positive funding makes longs pay shorts, this incentivizes shorting and discourages longing, pushing the perpetual back toward spot. When below spot, negative funding makes shorts pay longs, encouraging long positions.

Funding is typically settled every 8 hours, with the rate determined by the premium/discount between perpetual and spot prices. Rates are usually quoted as percentages per period but often discussed as annualized figures for comparison.

Extreme funding rates signal market imbalances: very high positive funding (20%+ annualized) suggests over-leveraged longs and potential for violent corrections when positions unwind; deeply negative funding indicates excessive short positioning. Savvy traders monitor funding as a sentiment indicator and trading opportunity.

The cash-and-carry trade, buying spot while shorting the perpetual, captures positive funding with minimal directional risk. Funding rate arbitrage across exchanges exploits rate differences. Funding historically has been positive on average, reflecting the market's generally bullish bias.