Perp Swap: Perpetual Futures Trading Without Expiry
Last Updated: June 2, 2026
A perp swap (perpetual swap) is a derivative contract that lets traders speculate on cryptocurrency prices without an expiration date. Unlike traditional futures contracts that settle monthly or quarterly, perp swaps remain open until you close them. The price tracks the spot market through a funding rate mechanism: when the perp trades above spot, long holders pay shorts, and vice versa. This keeps the contract anchored to the underlying asset. Most exchanges offer leverage from 2x to 125x, meaning you control a larger position with less capital—but liquidation risk scales with your leverage ratio. Traders use perp swaps for hedging, directional bets, and arbitrage between the perp and spot markets. The crypto leverage dynamics here differ sharply from traditional margin trading because you never actually own the asset. After reading this, you'll understand how funding rates work, when liquidation triggers, and how to structure a perp position that matches your risk tolerance.
Key Features Compared
| Feature | Perp Swap | Traditional Futures | Spot Trading |
|---|---|---|---|
| Expiry Date | None — hold the position as long as margin requirements are met and funding is paid | Fixed settlement date (monthly, quarterly) requiring position rollover or closure | No expiry; you own the asset outright until you sell |
| Price Anchor | Funding rate every 8 hours aligns perp price with spot through economic incentives | Basis converges to zero at expiration; contract price drifts from spot mid-term | Direct market price determined by buy and sell order books |
| Leverage Available | 2x to 125x depending on the exchange and asset; higher tiers require lower margin | Typically 5x to 20x; institutional platforms may offer higher for qualified accounts | 1x (or 2x–5x on margin accounts); you need full capital or collateral |
How the funding rate mechanism works
The funding rate is a small periodic payment exchanged between long and short traders every 8 hours. When demand pushes the perp price above the spot price, the rate turns positive and longs pay shorts. This creates an economic incentive for new shorts to enter and longs to reduce positions, pulling the perp back toward spot. When the perp trades below spot, the rate flips negative and shorts pay longs, encouraging the opposite rebalancing. The rate typically ranges from -0.1% to +0.1% per interval but can spike to ±0.5% or higher during volatile periods. Funding is calculated on your position size, not your margin, so a 10 BTC long with 0.5% funding pays 0.05 BTC every 8 hours. Over weeks, these payments add up—making perp swaps more costly for passive holds than spot or calendar futures. According to research from the Bank for International Settlements, perpetual swaps now represent over 60% of crypto derivatives volume, driven by their flexibility and 24/7 availability. If you're exploring perpetual contracts for the first time, tracking the funding history on your exchange helps you forecast net costs before opening a position.
Six factors that determine your outcome
Before placing a perp trade, weigh these variables that interact to shape profit, loss, and survival.
- Leverage ratio Your multiplier determines margin requirements and liquidation distance; 10x leverage means a 10% adverse move can wipe your position.
- Entry timing Perp prices swing wider than spot during high volatility; entering near a local extreme increases the risk of immediate drawdown.
- Funding rate direction Consistently paying funding drains margin over time; check the 7-day average before holding multi-day positions.
- Liquidation buffer Exchanges calculate liquidation price based on maintenance margin; keeping your buffer above 20% gives breathing room during wicks.
- Position size relative to account Risking more than 2% of total equity per trade raises the chance of a single move ending your session.
- Order type and slippage Market orders on thin books can fill far from the mark price, especially at 50x+ leverage where every tick counts.
Newer traders often fixate on leverage alone and ignore funding. A 0.3% daily funding rate (common during bull runs) equals 9% monthly—comparable to holding a leveraged ETF with high fees. The margin requirements also reset every funding interval, so your equity can shrink from payments even if price hasn't moved. One way to mitigate this: close the position before each funding timestamp and reopen immediately after if you want to avoid the charge, though exchange fees and slippage may cancel the benefit. Institutional desks sometimes run funding arbitrage by holding a spot long and a perp short simultaneously, pocketing the funding while staying market-neutral.
Trading perp swaps on EveDEX
EveDEX offers perpetual swaps on 40+ crypto pairs with leverage up to 100x and funding intervals every 8 hours. The platform calculates your liquidation price in real time and displays it next to your open position, so you always know your risk boundary. Isolated margin mode lets you ring-fence each trade—liquidation on one position won't affect others. Cross-margin mode pools your entire account balance, giving you more staying power but risking the full balance on any trade. The order book shows aggregated depth from multiple liquidity providers, reducing slippage on mid-sized orders. You can set take-profit and stop-loss orders simultaneously, and trailing stops adjust automatically as price moves in your favor. For traders layering funding arbitrage or delta-neutral strategies, EveDEX's API supports sub-100ms execution and WebSocket feeds for mark price, index price, and live funding rates.
