Bitcoin futures basis: contango, CME and the carry trade

The bitcoin futures basis is the gap between the price of a dated futures contract and the spot price of BTC. When futures trade above spot, the market is in contango (positive basis); when they trade below, it is in backwardation (negative basis). Traders usually annualize the basis, because that number is the yield you can lock in by buying bitcoin and selling the future. As of October 24, 2026, the annualized basis on Deribit sat around 5.2⁠–⁠5.9%, only modestly above US Treasury bill yields.

This guide covers how to calculate the basis, why bitcoin futures almost always trade at a premium, how the cash-and-carry trade works, and what backwardation tells you.

What is the bitcoin futures basis?

A dated future has an expiry. On that day its price converges to the underlying: CME bitcoin futures settle to the CME CF Bitcoin Reference Rate (BRR), which CF Benchmarks describes as the settlement index for CME's futures. The contracts are cash-settled, so no coins change hands. The standard CME contract covers 5 BTC, as the CFTC's Commitments of Traders data lists it ("5 Bitcoins").

Before expiry, the future can trade richer or cheaper than spot. That difference is the basis:

• dollar basis = futures price − spot price;
• percentage basis = (futures / spot − 1) × 100;
• annualized basis = percentage basis × 365 / days to expiry.

Annualizing lets you compare contracts with different maturities. A 1% premium on a one-month contract is roughly 12% a year; the same 1% on a six-month contract is about 2%.

Perpetual futures have no expiry, so the funding rate plays the role of the basis there. Both measure how much traders are willing to pay for leveraged long exposure.

Contango vs backwardation

Textbook futures pricing says a contract should trade above spot by the cost of carry: interest on the money, plus storage, minus any income from the asset. Bitcoin has no warehouse costs and pays no dividends, so the floor for the basis is roughly the dollar interest rate. Anything above that is a leverage premium: many traders want long exposure without buying the coins and will pay up for it.

How to calculate the basis: a live example from October 24, 2026

CME does not publish free quotes through an open API, so for a live example we use crypto exchanges that list the same kind of dated contracts. Prices come from the public Deribit and Binance APIs as of 2:07 PM ET; the Deribit index stood at $80,154.

At the same moment the Binance BTCUSDT quarterly for December 25 traded at $81,052 against an index of $80,291: 0.95%, or 5.6% annualized. The venues agree within a few tenths of a percent because arbitrageurs keep them in line.

The benchmark to compare against: 13-week US Treasury bills yielded 4.14% (coupon equivalent) on October 23, 2026, per Treasury data. A basis near 5.5% is only about 1.3 percentage points over the "risk-free" rate. That is calm contango, with no froth in longs and no fear either. It fits the rest of our market pulse for that day: Binance funding at roughly 1.5% annualized and BTC down 4.9% over 30 days.

The cash-and-carry trade: how the basis gets harvested

The best-known use of the basis is the carry trade, often just called the basis trade:

1. Buy bitcoin spot (or shares of a spot bitcoin ETF).
2. At the same time, sell a dated future for the same amount.
3. Hold both legs to expiry; BTC price moves cancel out.
4. At expiry the future converges to spot, and the seller pockets the basis locked in at entry.

Using the table above: buying 1 BTC at $80,154 and selling the December future at $80,894 locks in $740 over 61.6 days, about 5.5% annualized before fees and margin costs.

Spot ETFs made this trade easy for funds. As CF Benchmarks points out, six spot ETFs strike their NAV off the same CME CF index family that CME futures settle on, so both legs converge to the same price. More on the funds themselves in our guide to bitcoin ETF flows.

What the CME basis says about the market

The key idea: when the basis compresses toward T-bill yields, the trade stops paying and funds unwind it by selling ETF shares and buying back futures. So some "ETF outflows" are carry trades closing, not investors dumping bitcoin.

You can see this in the CFTC data for the CME contract:

Over the year, CME open interest fell 26% and hedge fund shorts fell 39%. The group's net short on October 20, 2026 was 4,942 contracts, or about 24,700 BTC. Those shorts are largely the futures leg of carry trades, so shrinking shorts alongside falling open interest point to a less attractive basis trade, not to funds turning bullish.

A rough guide to annualized basis levels (a reference, not a rule):

• below T-bill yields or near zero: weak demand for longs; carry doesn't pay;
• T-bill yield plus 1⁠–⁠3 points: a normal, calm market;
• 15⁠–⁠25% and up: overheated leverage. In March 2024 the CF Benchmarks two-week basis index reached 25%, then fell to zero by mid-April (CF Benchmarks);
• negative: stress.

Backwardation: when futures trade below spot

Bitcoin rarely goes into backwardation, and when it does it is usually during a panic. In late August 2022 the average offshore futures basis turned negative for the first time since March 2020, according to K33 Research, and CME futures closed that Friday about 3% below spot. After FTX collapsed in November 2022, CME futures traded below spot from November 9, with the discount briefly reaching 5% on the day of the crash (Cointelegraph).

A negative basis means futures sellers outnumber buyers: some are hedging coins they can't sell quickly, others are shorting without holding spot. Historically these episodes often lined up with extreme fear, but on its own backwardation is not a buy signal; a discount can persist for weeks.

Common mistakes

• Comparing percentage basis without the tenor. 2% to March and 0.5% to November are nearly the same, 5.4% and 5.2% annualized.
• Treating carry as risk-free. A sharp rally triggers margin calls on the short future while the spot or ETF leg sits elsewhere. There is venue risk and fees on entry, exit and rolls.
• Confusing the "CME gap" with backwardation. Until May 29, 2026, CME crypto futures didn't trade on weekends, and the Monday price gap was never a basis. CME crypto futures now trade around the clock with a short Saturday maintenance window (crypto.news), but weekend liquidity is thinner, and a one-off dislocation during those hours is not a regime change.
• Reading every ETF outflow as selling. Part of it can be basis trades closing once the basis drops toward T-bill yields.
• Looking at a single contract. Check the whole curve: a front month in backwardation with later months in contango is local stress, not a new regime.

FAQ

Why do bitcoin futures trade above spot?

Because money costs something (dollar interest rates) and because traders want leveraged longs. Holding a future ties up less capital than buying coins, and people pay a premium for that.

What is a normal bitcoin futures basis?

In a calm market, roughly the T-bill yield plus 1⁠–⁠3 points annualized. On October 24, 2026 it was about 5.5%, against 4.14% on 13-week bills.

What does a negative basis mean?

Futures trade below spot: panic or heavy hedging. It happened, for example, after FTX collapsed in November 2022.

Where can I track the basis?

Exchanges publish dated futures prices (CME, Deribit, Binance); you annualize them with the formula above. For the live price and funding, see the CoinLab market pulse and the bitcoin page.

This is not investment advice.