What Is the Basis Trade? Cash-and-Carry Explained

The basis trade, also called cash-and-carry, is a strategy that profits from the price difference (the "basis") between an asset's spot price and its futures or perpetual price, typically by simultaneously buying the asset on the spot market and shorting an equivalent amount via futures or perpetual contracts. The goal is to capture that price gap or the ongoing funding payments, largely independent of which direction the underlying asset's price actually moves.

This makes the basis trade fundamentally different from directional trading — the position is designed to be roughly market-neutral, with returns coming from the structural gap between spot and derivatives pricing rather than from correctly predicting Bitcoin or Ethereum's next move.

How the trade works with perpetual futures

Crypto's most common derivative is the perpetual futures contract, which has no expiration date but uses a funding rate mechanism to keep its price tethered to spot: when perpetual prices trade above spot (a common condition during bullish periods, since more traders want long exposure), long position holders pay periodic funding to short holders, and vice versa.

The classic crypto basis trade exploits this:

1. Buy the asset on the spot market (e.g., buy 1 BTC).
2. Simultaneously open a short position of equivalent size in the perpetual futures market.
3. Collect funding payments if the perpetual is trading at a premium to spot (positive funding rate), since longs pay shorts in that scenario.

Because the spot holding and the short futures position roughly offset each other's price exposure, the trader's profit comes primarily from the accumulated funding payments over time, not from Bitcoin's price direction — in theory, the position is "market neutral" hedged exposure that harvests a funding-rate yield.

Why the basis (and funding rates) exist

Funding rates exist to keep perpetual futures prices anchored to spot prices, since perpetuals have no expiration date to force convergence the way traditional dated futures do. When speculative demand for leveraged long exposure is high (common during bullish, high-sentiment periods), perpetual prices trade at a premium to spot, and positive funding rates compensate short holders for absorbing that imbalance — creating the opportunity the basis trade captures.

During bearish or heavily short-skewed periods, funding rates can flip negative, meaning shorts pay longs instead — in which case the classic basis trade (long spot, short perpetual) would cost money to maintain rather than earn funding, and the strategy would need to be reversed or paused.

Fixed-expiration futures basis

An alternative version of the trade uses dated futures contracts (with a fixed expiration) rather than perpetuals. Here, the "basis" is the price gap between the futures contract and spot, which should converge to zero as expiration approaches. A trader can lock in the current basis by simultaneously buying spot and shorting the futures contract, and profit from that gap converging by expiration — a more deterministic version of the trade than the funding-rate-dependent perpetual approach, since the profit is set at entry rather than accumulating unpredictably over time.

Risks and constraints

Funding rate risk (perpetual version). Funding rates can change, flip negative, or spike unpredictably, meaning the "yield" from a perpetual basis trade isn't fixed — a position that looked profitable at entry can turn unprofitable if funding conditions shift before you close it.

Margin and liquidation risk. The short futures leg is a leveraged position requiring margin, and while the spot holding is meant to offset its price risk, exchange-specific margin mechanics, funding payment timing, and potential platform issues can create liquidation risk on the short leg even in a theoretically hedged position.

Counterparty and platform risk. Holding both a spot position (often on one exchange) and a futures position (sometimes on a different platform) means exposure to the operational and solvency risk of each platform involved — see our guide on general wallet and exchange security considerations.

Execution and capital efficiency. The trade requires capital for both the spot purchase and margin for the short position, meaning capital efficiency is generally lower than it might first appear, and the strategy competes with simpler alternatives like holding stablecoins or straightforward yield products.

Basis trade at a glance

Element	Perpetual futures basis	Fixed-expiration futures basis
Profit source	Accumulated funding payments	Basis convergence at expiration
Predictability	Variable, can change daily	More fixed at entry
Main risk	Funding rate reversal	Liquidity/margin during holding period
Time horizon	Open-ended, closed at discretion	Fixed, tied to expiration date

Who this strategy suits

The basis trade is generally a strategy for traders comfortable with derivatives mechanics, margin management, and monitoring funding rates actively — it's not a passive, "set and forget" yield source despite sometimes being marketed that way. It shares some conceptual DNA with arbitrage trading in that it seeks to capture a structural pricing gap rather than a directional bet, but it carries distinct derivatives-specific risks that pure spot arbitrage does not.

Bottom line

The basis trade captures the price gap (or funding payments) between spot and futures/perpetual crypto markets by holding offsetting long spot and short futures positions, aiming for market-neutral returns independent of price direction. Its profitability depends on funding rates or basis conditions that can shift, and it carries margin, liquidation, and platform-specific risks that make it a more advanced strategy than it may first appear — not a risk-free yield source.