Perpetual swaps and dated futures are both leveraged bets on price, but their plumbing differs in ways that change how you trade and what signals they emit. The distinction is foundational to reading crypto derivatives.
Dated futures: an expiry and a basis
A traditional future has a settlement date. Before then it trades at a basis to spot — usually a premium in healthy markets — that converges to zero at expiry. That convergence is mechanical and dependable, which is what makes the cash-and-carry trade possible: long spot, short the premium future, collect the basis into settlement.
Futures also have a term structure: different expiries price different premiums, and the shape of that curve tells you how the market views forward demand.
Perpetuals: no expiry, funding instead
Perpetual swaps never settle. To keep them tethered to spot without convergence, they use the funding rate — a periodic payment between longs and shorts, typically every 8 hours, that pulls the perp price back toward the index. Positive funding means longs pay shorts; negative means the reverse.
Perps dominate crypto volume because they are simple to hold indefinitely and offer deep liquidity. The cost is paying or receiving funding continuously rather than dealing with an expiry.
What each one signals
The instruments emit different information:
- Perp funding is a real-time, high-frequency gauge of leverage sentiment — fast but noisy.
- Futures basis and term structure are slower, cleaner reads on institutional and carry demand, especially on regulated venues like CME.
Watching both together separates fast retail leverage (perps) from patient institutional positioning (dated futures).
When to use which
Perps suit active, directional trading and short holds where you want depth and no roll. Dated futures suit carry trades, hedging to a known horizon, and anyone who wants to avoid open-ended funding costs. The basis-versus-funding spread between them is itself a trade when the two dislocate.
The roll, and why it matters
Dated futures carry one cost perps do not: the roll. Hold a position past expiry and you must close and reopen in the next contract, paying the spread and any basis difference between the two. In steep contango, rolling repeatedly bleeds carry — a tax that index products and systematic longs feel acutely. Perps replace that discrete roll cost with continuous funding. Neither is free; the choice is whether you prefer a lumpy, scheduled cost you can plan around (the roll) or a smooth, always-on one (funding). For a hedge to a fixed date, the future's defined horizon usually wins; for an open-ended directional view, the perp's no-roll convenience usually does.
Takeaway
Dated futures expire and converge on a basis, giving carry trades and a term-structure signal; perpetuals never expire and use funding to stay tethered, giving a fast leverage-sentiment read. Use perps for active directional trades, futures for carry and hedging, and read both to tell quick retail leverage from patient institutional flow.