Funding and Basis Arbitrage
Funding and basis arbitrage buys crypto spot and shorts perps or futures to earn the premium while staying neutral. Learn the mechanics, returns and risks.
Funding and basis arbitrage is the crypto version of the classic cash and carry trade. A trader buys an asset on the spot market and shorts the same amount through perpetual futures or dated futures. Price moves on the two legs cancel out, so the position is roughly market neutral. The profit comes from positive funding payments on the short perpetual, or from the futures premium that converges to spot at expiry. It is one of the most popular strategies among crypto funds, and it has also been behind some spectacular failures when its hidden risks were ignored. See Cash-and-Carry Arbitrage for the traditional version.
Two versions#
| Version | Long leg | Short leg | Earns |
|---|---|---|---|
| Funding arbitrage | Spot | Perpetual futures | Funding payments while funding is positive |
| Basis arbitrage | Spot | Dated futures | The futures premium, locked in until expiry |
How the funding version works#
How the basis version works#
You buy spot and sell a quarterly future trading above spot. At expiry, the future converges to spot, and you earn the difference. The return is known at entry if both legs are held to expiry, unlike funding, which changes every interval. See Crypto Futures and Basis.
Why the opportunity exists#
- Leveraged long demand pushes perps and futures above spot in bull markets.
- Arbitrage capital is limited by custody, regulation and exchange risk concerns.
- Different investor bases on spot and derivatives venues.
After US spot Bitcoin ETFs launched in 2024, many funds ran basis trades by buying ETF shares and selling CME futures, which brought more capital into the trade and compressed the basis at times.
Risks#
| Risk | Example |
|---|---|
| Exchange or counterparty failure | FTX's collapse in 2022 trapped funds used in basis trades. See Market, Credit and Counterparty Risk |
| Liquidation of the short leg | A sharp rally drains margin on the short before rebalancing |
| Funding turning negative | Shorts must pay longs, turning income into cost |
| Basis collapse before expiry | Mark to market losses if positions must be closed early |
| Execution and fees | Slippage and fees on both legs eat thin margins |
| Stablecoin or collateral risk | Collateral depegs or is frozen. See Stablecoins |
| Liquidity of the spot asset | Hard to exit large spot positions in small altcoins |
Running the trade sensibly#
- Use low leverage on the short leg and keep extra margin.
- Split across reputable venues to limit exposure to any one exchange.
- Monitor funding and close when it falls toward zero or turns negative.
- Account for all costs: fees, spreads, withdrawal and transfer costs.
- Rebalance as prices move so both legs stay the same size.
Related products#
Some products package this trade. For example, synthetic dollar tokens backed by long spot and short perp positions pay holders the funding income, carrying the same risks in a token wrapper. See Stablecoins.
Frequently asked questions#
What is funding rate arbitrage?#
Buying crypto spot and shorting the same amount of perpetual futures to collect positive funding payments while staying hedged against price moves.
Is basis trading risk free?#
No. It removes price risk but leaves exchange failure, liquidation, funding changes and collateral risks.
Why does crypto basis exist?#
Strong demand for leveraged long exposure pushes derivatives prices above spot, and limited arbitrage capital allows the premium to persist.
Next, learn to read blockchain data in On-Chain Analytics.
3 quick questions on this lesson. Get them all right to finish it.
Turn on JavaScript to take the quiz.
Mentioned in
- Perpetual FuturesCrypto
- Mark Price vs Index PriceCrypto
- Crypto and Prediction Markets Learning PathStart Here
- ArbitrageMarkets and Instruments
- Basis and Basis TradingFutures
- Futures Basis and Forward Price CalculatorCalculators