Perpetual Contract Trading: How Crypto Futures Work Without Expiry
Last Updated: June 2, 2026
Perpetual contract trading has become one of the most liquid markets in crypto, letting you speculate on Bitcoin, Ethereum, and hundreds of altcoins with leverage and no expiry date. Unlike traditional futures that settle quarterly, a perpetual swap stays open as long as you maintain margin, using a funding rate mechanism to anchor the contract price to the underlying spot market. This structure makes perpetuals attractive for both short-term traders chasing volatility and hedgers looking to offset spot exposure. On EveDex, you'll find leveraged perpetual contracts across major pairs with up to 100× leverage, transparent funding intervals, and real-time mark price calculations that reduce the risk of unfair liquidations. You'll also encounter inverse contracts (margined in the base coin) and linear contracts (margined in stablecoins), each with distinct risk profiles. By the end of this guide, you'll understand how funding keeps perpetuals tethered to spot, what leverage really means for your capital, and how to manage liquidation risk when prices swing. Whether you're hedging a long-term hold or trading intraday momentum, knowing how crypto derivatives behave under different market conditions will help you size positions confidently and avoid common margin traps.
Key perpetual contract features
| Feature | Description | Advantage | Risk |
|---|---|---|---|
| No expiry | Positions remain open indefinitely until you close them or get liquidated; no roll-over to a new contract month. | Simplifies long-term hedging and removes calendar management; you hold as long as margin is sufficient. | Funding payments can accumulate over time if you're on the wrong side of rate swings; extended positions pay ongoing costs. |
| Funding rate | Periodic exchange of payments between longs and shorts (usually every 8 hours) to keep perpetual price near spot. | Prevents sustained divergence from spot; arbitrageurs step in when funding becomes extreme, stabilizing the contract. | High funding rates can erode profit on popular directional bets; during a strong bull run longs may pay 0.1%+ per interval. |
| Leverage | Borrow capital to control a position larger than your collateral; typical range is 2×–125× depending on the exchange and pair. | Magnifies returns on small price moves; lets you express conviction without tying up large amounts of capital. | Amplifies losses just as much; a 1% adverse move on 100× leverage wipes out your margin and triggers liquidation instantly. |
How funding rates keep perpetuals anchored to spot
Perpetual contracts trade freely on the order book, so their price can drift above or below the actual spot price of the underlying asset. The funding rate is the mechanism exchanges use to pull that price back in line. Every few hours, traders holding long positions pay shorts (or vice versa) based on the difference between the perpetual's mark price and a reference index. When the perpetual trades at a premium, longs pay shorts, incentivizing shorts to enter and longs to close, which pushes the contract price down toward spot. When the perpetual trades at a discount, shorts pay longs, drawing in buyers and lifting the contract. This continuous tug-of-war keeps the perpetual tethered without ever forcing settlement. On EveDex, funding is calculated using a time-weighted average of the premium over each 8-hour interval, and you can see the current and predicted rates on every contract page. According to CME research, funding mechanisms in cash-settled derivatives originated in equity index futures but have found their strongest adoption in crypto, where 24/7 trading and high volatility demand constant price discovery.
Six factors that shape your perpetual trading outcome
Before opening any leveraged position, assess these core variables:
- Leverage multiplier Choose a multiplier that matches your risk tolerance and market volatility; 10× means a 10% adverse move liquidates you, 2× gives you a 50% buffer.
- Funding rate history Check whether recent funding has been consistently positive or negative; a string of high positive rates signals expensive long positions and potential mean reversion.
- Mark price vs last price Exchanges use a fair mark price (smoothed across multiple spot indexes) to calculate liquidations, protecting you from temporary wicks on the perpetual book.
- Margin mode Isolated margin risks only the collateral assigned to one position; cross margin uses your entire account balance, offering more cushion but exposing all funds to a single liquidation.
- Liquidation price Always know the exact price that triggers liquidation; set stop-losses several percent above (for longs) or below (for shorts) that threshold to exit gracefully.
- Position size relative to liquidity Large positions in thin markets can suffer slippage on entry and worse slippage during forced liquidation, amplifying losses beyond your stop.
Perpetual contracts reward precision. A trader who enters with 5× leverage, monitors funding every 8 hours, and sets a stop at 15% drawdown can survive short-term noise and capture a trend. A trader who goes 50× with no stop because "it will bounce" will likely see their margin evaporate on a routine 2% spike. For a deeper dive into position-sizing math, CoinDesk's derivatives explainer walks through the profit-and-loss formulas for both linear and inverse contracts.
Risk management becomes even more critical during high-impact events — exchange outages, regulatory headlines, or coordinated liquidation cascades. EveDex mitigates some of these risks with insurance fund protection, which covers losses from bankrupt positions so that winning traders still receive their full profit even when a counterparty's account goes negative.
Trading perpetuals on EveDex
EveDex supports both linear perpetuals (margined in USDT) and inverse perpetuals (margined in the base cryptocurrency) across 40+ pairs, with leverage up to 100× on major coins and 20× on smaller-cap altcoins. The platform calculates funding every 8 hours using a composite spot index drawn from Binance, Coinbase, and Kraken, ensuring that no single venue can skew the rate. You can toggle between isolated and cross margin with a single click, and every order screen displays your liquidation price in real time as you adjust size and leverage. Advanced traders use the API to automate funding arbitrage — going long on one exchange while shorting on another when rates diverge — and EveDex's WebSocket feeds deliver sub-millisecond latency for price updates and execution confirms. Beginners benefit from the demo mode, which mirrors live order books and funding intervals with play money, letting you experiment with 50× leverage without risking capital. Whether you're hedging a spot portfolio during a correction or speculating on an altcoin breakout, EveDex's transparent fee schedule (maker rebates down to -0.02%, taker fees capped at 0.05%) and deep liquidity pools keep your execution tight and your costs predictable.
