Glossary

What are perpetual futures?

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Perpetual futures: a contract with no expiry, tied to spot by funding, traded with leverage
Quick answer. A perpetual future (a "perp") is a derivative contract that tracks an asset's price without ever expiring. Instead of settlement, a funding payment passes between longs and shorts every few hours to keep the contract price close to spot. Perps let you go long or short with leverage, which means you post a fraction of the position as margin — and the exchange liquidates you if losses consume it.

Perpetuals are where most crypto volume happens and where most beginner accounts end. Nothing about the product is dishonest; it simply does exactly what leverage does, faster than intuition can follow.

How does a contract with no expiry stay near spot?

Through the funding rate. If the perp trades above spot, longs pay shorts a small percentage of their position every funding interval (typically every eight hours); if it trades below, shorts pay longs. The payment makes the crowded side expensive to hold, which pulls the contract back toward the index. Traditional futures converge to spot at expiry; perps are nudged toward it continuously instead.

Spot or perps — what actually changes?

SpotPerpetual futures
What you ownThe coin itselfA contract; no coin changes hands
DirectionLong only (sell what you hold)Long or short
LeverageNone (or borrowed on margin)Built in: 2x to 100x+
Holding costNoneFunding every interval
Worst caseCoin goes to zeroLiquidation; position closed by the exchange
Who it suitsFirst accounts, long-term holdersTraders with a tested system and sizing discipline

The curriculum keeps everyone on spot until Stage 4 for the reason in the last row.

What does a 10x position really cost?

Margin $1,000, leverage 10x, position $10,000 of BTC. A 5% fall in price is a $500 loss — half the margin, in one ordinary day. A 10% fall would exceed the margin, so the exchange liquidates somewhere before that, around a 9–9.5% move depending on maintenance margin. Now the holding cost: at a funding rate of 0.01% per eight hours, the position pays $1 three times a day, $3 a day, about $1,095 a year — 110% of the margin annually, for a rate that looks like a rounding error. At 0.05% funding during a crowded rally the same position pays $15 a day.

Annual funding cost as % of margin, $10,000 position on $1,000 margin0.01% per 8h110%0.03% per 8h329%0.05% per 8h548%
Funding × 3 payments × 365 days, divided by margin. Small rates on a leveraged position become large costs on the money you actually posted.

Who should not trade perpetuals yet?

Anyone who cannot, from memory, explain mark price, funding and their own liquidation level before opening the position; anyone without a written sizing rule that keeps liquidation far beyond the stop; and anyone whose spot journal does not yet show a repeatable process. The leverage will not make a method that loses on spot win on perps; it will make it lose faster. Our leverage lesson shows that at 100x an ordinary hour of price noise exceeds the distance to liquidation — the number on the button is a warning label, not a feature.

FAQ

Are perpetual futures the same as margin trading? No. Margin trading borrows money to buy the actual coin on spot. A perpetual is a separate contract that never involves the coin; leverage is built into the contract and funding replaces interest.

Can I lose more than my margin on a perp? On the major exchanges liquidation and an insurance fund normally cap the loss at your margin for isolated positions; in extreme gaps auto-deleveraging can occur. Cross-margin positions can draw on your whole account balance.

What leverage is safe for a beginner? The honest answer is 1x — spot — until a journal shows a repeatable process. When perps are justified, most professionals size so that liquidation sits far beyond the stop, which usually means single-digit leverage.

Related: funding rate · liquidation · mark price · leverage
Risk reminder: this is education, not advice. Most retail traders lose money.
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The 10x example uses a $1,000 margin and $10,000 position; annual funding = rate × 3 × 365 on the position, divided by margin. Rates are illustrative. Every figure in the tables above is calculated by TradingPrimer from the stated assumptions, with the working shown so you can reproduce it. Published 2 Sep 2026.

← Full glossary

Perpetuals sit at Stage 4 of the Primer Path on purpose. Spot vs futures lays the two products side by side, Lesson 7 works one leveraged position through to liquidation, and the DEX guide covers the self-custody venues where perps trade without an account.