Guide · Markets
What Is a Perpetual Futures Contract? Futures That Never Expire
Perpetual futures let traders take leveraged, long or short positions on an asset with no expiration date — a crypto-market innovation now central to how much of that market actually trades. Here's how they work.
A traditional futures contract has an expiration date, after which it settles and the position closes. A perpetual futures contract — sometimes just called a "perp" — works similarly but never expires: a trader can hold a leveraged long or short position indefinitely, as long as they maintain enough margin to keep it open.
Without an expiration date forcing the contract's price back in line with the underlying asset, perpetuals need a different mechanism to keep them from drifting too far from the spot price. That mechanism is the "funding rate": a periodic payment, typically every few hours, exchanged directly between traders holding long positions and traders holding short positions. When the perpetual trades above the spot price, longs pay shorts, discouraging more long positions and encouraging shorts — pulling the contract's price back toward spot. When it trades below spot, the payment flows the other way.
The funding rate itself is a genuinely useful piece of market information beyond just keeping the contract price anchored: a persistently high positive funding rate signals that a large majority of leveraged traders are positioned long, which can be read either as strong bullish conviction or as a crowded trade vulnerable to a sharp reversal if those longs get forced to close at once — exactly the dynamic behind many of crypto's sharpest, fastest liquidation-driven price swings.
Perpetual futures carry meaningfully more risk than a comparable spot position, since leverage magnifies both gains and losses and a large enough adverse move can trigger forced liquidation of the entire position. Understanding the mechanics — and the funding rate specifically — before ever touching leverage is exactly the kind of groundwork worth doing on Trade2Spike first.