Why is the perpetual price different from spot?

Because it is a separate market with its own buyers and sellers, many of them leveraged. The funding payment gives traders an incentive to close the gap, but at any moment demand for leveraged longs or shorts can push the perpetual above or below spot.

Is a high basis bullish?

It shows that perpetual buyers are paying up relative to spot, which often coincides with crowded long positioning. That can precede either continuation or a sharp reversal when leveraged longs are forced out. The basis alone does not decide which.

Spot-perp basis (perpetual premium)

The spot-perp basis is the difference between the price of a perpetual futures contract and the price of the underlying spot asset, usually expressed in percent or basis points. A positive basis, or premium, means the perpetual trades above spot; the funding mechanism exists to pull that gap back toward zero.

Senzoukria · Glossary · Updated September 2026

At a glance

Basis: (Perpetual price − spot price) ÷ spot price
Example: 60,060 vs 60,000 = +0.10% = +10 basis points
Positive basis: Premium: perpetual above spot
Anchor: Funding payments push the premium toward the index

Measuring it

Take the perpetual's price and the spot price at the same instant. With BTC spot at 60,000 and the perpetual at 60,060, the basis is +60, or 60 ÷ 60,000 = 0.10%, 10 basis points. A negative value is a discount. The comparison must be synchronous and like for like: a last trade on one market and a stale price on the other produce a basis that never existed, and mid prices are more stable than last trades for this purpose.

The spot reference also matters. The exchange computes its funding premium against a multi-exchange index, not against its own spot pair, so a basis measured between two markets of the same exchange is related to, but not identical with, the premium that drives funding.

Perpetual premium versus dated futures basis

Dated futures converge to spot at expiry, so their basis reflects the cost of carrying the position until then and can be annualized: a quarterly future at 61,500 with spot at 60,000 and 90 days left carries a 2.5% basis, about 10.1% on a simple annual basis. A perpetual has no expiry; its premium is kept near zero by funding payments, so a persistent premium shows up as persistent positive funding rather than as a term structure.

What it can indicate

A widening premium during a rally suggests leveraged perpetual buying is leading spot.
A move with spot leading and the perpetual lagging suggests spot demand rather than leverage.
A sharp collapse of the premium often accompanies long liquidations.
None of these readings is a signal on its own; the basis describes positioning, not direction.

In Senzoukria

Binance Spot and Binance USD-M perpetuals are two separate data sources in the desktop, each with its own footprint, delta and heatmap, so the aggression on spot and on the perpetual can be read side by side. The software does not compute or plot a basis series, a premium index or funding; comparing prices across the two markets is done by reading their charts at the same time. Both sources are analysis only.

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Frequently asked questions

Why is the perpetual price different from spot?: Because it is a separate market with its own buyers and sellers, many of them leveraged. The funding payment gives traders an incentive to close the gap, but at any moment demand for leveraged longs or shorts can push the perpetual above or below spot.
Is a high basis bullish?: It shows that perpetual buyers are paying up relative to spot, which often coincides with crowded long positioning. That can precede either continuation or a sharp reversal when leveraged longs are forced out. The basis alone does not decide which.

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