Perpetual Futures

What is perpetual futures?

Perpetual futures are derivative contracts that let you go long or short a cryptocurrency’s price without owning the coin and without a fixed settlement date. Instead of expiring like a traditional futures contract, a perpetual position can stay open indefinitely as long as you maintain the required margin. The key mechanism that makes this possible is funding payments—periodic transfers between traders that nudge the perpetual price back toward the underlying spot market. If you’re looking for the broader overview of what are crypto perpetual futures, this term is one of the core building blocks.

In practice, perpetual futures are used for speculation (betting on price direction), hedging (reducing exposure to price moves), and capital efficiency (using leverage rather than paying full notional value). They’re offered on many centralized exchanges and also exist in onchain form via DeFi protocols, but the economic idea is the same: a continuously traded contract whose price is anchored to spot through incentives.

Perp contract

A perp contract is the trader’s shorthand for a perpetual futures contract. Economically, it behaves like a futures contract—your profit and loss is based on the change in the contract price relative to your entry—except there is no expiry date and no final settlement event that forces convergence. Because there’s no expiry, the market needs another way to keep the perp price from drifting too far above or below spot; that’s where funding payments come in.

When the perp trades at a premium to spot, the market is typically more eager to be long than short, so longs pay shorts via funding. When the perp trades at a discount, shorts pay longs. This payment is not a “fee to the exchange” in the purest sense; it’s a transfer between counterparties designed to balance positioning and encourage the perp price to track spot. Traders also need to manage margin: if losses reduce collateral below maintenance requirements, the position can be liquidated.

Perpetual swap

A perpetual swap is another name for perpetual futures, commonly used because the contract “swaps” periodic funding between longs and shorts to maintain its peg to spot. Mechanically, a perpetual swap is marked-to-market continuously: as the price moves, unrealized P&L changes, and exchanges or protocols may realize P&L into your margin balance depending on their system. The absence of expiry makes the product feel closer to spot trading, but the risk profile is closer to leveraged derivatives.

The most important concept to understand in a perpetual swap is that funding payments can materially affect returns, especially for positions held over multiple funding intervals. For example, if you hold a long position during a prolonged period of positive funding, you may pay funding repeatedly even if price doesn’t move much—effectively a “carry cost” for being long. Conversely, receiving funding can boost returns, but it can also signal crowded positioning that may unwind quickly. In short, perpetual swaps combine directional exposure with an ongoing financing component.

Why perpetual futures matters

Perpetual futures matter because they solve a practical problem in crypto markets: how to offer continuous, high-liquidity long/short exposure without forcing traders to roll contracts every month or quarter. By replacing expiry-based convergence with funding payments, perps create a near-spot trading experience while still enabling leverage, hedging, and efficient price discovery. This is one reason perpetual markets often become the primary venue for expressing bullish or bearish views, and why their open interest and funding dynamics are closely watched.

They also matter for the wider ecosystem because perp pricing and funding can influence spot markets: hedgers, arbitrageurs, and market makers use the relationship between spot and perps to keep prices aligned across venues. Without perpetual futures, traders would rely more heavily on expiring futures, options, or spot borrowing—tools that can be less accessible or require more operational overhead. For readers building a foundation on what are crypto perpetual futures, understanding perps is essential because they are the dominant format for crypto derivatives volume and a key driver of market structure.