Perpetual futures — commonly called "perps" — are the most widely traded derivative instrument in cryptocurrency markets. They let you speculate on the price of an asset like Bitcoin or Ethereum without ever owning the underlying token, and unlike traditional futures contracts, they never expire.

How Perpetual Futures Work

A perpetual futures contract is an agreement to buy or sell an asset at a future price. When you open a position, you're not purchasing the actual cryptocurrency. Instead, you're entering a contract that tracks the asset's price. If you believe the price will rise, you go long. If you think it will fall, you go short.

Because there's no expiration date, you can hold a perpetual futures position for as long as you want — seconds, hours, days, or months. This is a major departure from traditional futures markets, where contracts settle on a fixed date (monthly or quarterly). The absence of expiry makes perps simpler and more flexible, which is why they dominate crypto trading volume.

The Role of the Funding Rate

Without an expiration date, there's no natural mechanism forcing the contract price to converge with the spot (actual) price of the asset. This is where the funding rate comes in.

The funding rate is a periodic payment exchanged between long and short traders. It works like this:

• When the perps price is above spot price (more buyers than sellers), longs pay shorts. This incentivizes selling and pushes the contract price back down toward spot.
• When the perps price is below spot price (more sellers than buyers), shorts pay longs. This incentivizes buying and pushes the contract price back up toward spot.

Funding payments typically occur every eight hours, though the interval varies by exchange. The rate is usually small — fractions of a percent — but it compounds over time and can meaningfully affect your returns on longer-duration trades.

How Perps Differ from Traditional Futures

Traditional futures contracts have a set expiry date — a quarterly Bitcoin future, for example, settles every three months. As the expiry approaches, the futures price naturally converges with the spot price. Traders who want to maintain exposure must "roll" their position into a new contract, which introduces friction and cost.

Perpetual futures eliminate this entirely. No rolling, no settlement, no calendar management. The funding rate mechanism replaces the natural convergence that expiry provides.

Another key difference is accessibility. Traditional futures often require large minimum positions and are traded on regulated exchanges with restricted access. Crypto perpetual futures are available 24/7 with lower barriers to entry, and most platforms offer leverage ranging from 2x to 100x or more.

Why Perps Dominate Crypto Trading

Perpetual futures account for the vast majority of cryptocurrency trading volume — often exceeding spot market volume by a factor of five or more. Several factors drive this dominance:

• Leverage allows traders to control larger positions with less capital
• Short selling is as easy as going long, enabling profit in any market direction
• No expiry means less operational overhead for active traders
• High liquidity results in tighter spreads and better execution

Perps in Competitive Trading

On platforms like Legend, perpetual futures are the foundation of competitive trading. Whether you're entering the Arena for a 1v1 duel or climbing the leaderboards, you're trading perps. The combination of leverage, real-time PnL tracking, and the ability to go long or short makes perpetual futures ideally suited for head-to-head competition where skill, timing, and risk management determine who wins.

Understanding how perps work — especially funding rates and leverage — is essential before putting real capital at risk. Start with the basics, practice with small positions, and build from there.