"Perpetual contract" sounds intimidating, but the concept is actually quite simple. This article skips complex financial theory and explains perpetual contracts in plain language.
Let's Start with "Contracts"
In the financial world, a "contract" is an agreement: you and another party agree to buy or sell something at a certain price under certain conditions.
Traditional futures contracts have an "expiration date." For example, if you buy a December crude oil futures contract, when December arrives, you either settle the price difference or actually take delivery of barrels of oil.
Cryptocurrency has a similar concept, but with a special twist — the perpetual contract.
Perpetual Contract = A Contract with No Expiration Date
The biggest difference between perpetual contracts and traditional futures is: there's no expiration date.
Once you open a position, you can hold it indefinitely. You don't need to worry about being force-settled on some future date. As long as your margin is sufficient and you haven't been liquidated, you can theoretically hold the position forever.
That's what "perpetual" means — it runs continuously with no termination date.
How Are Perpetual Contracts Different from Simply Buying Crypto?
You might wonder: if perpetual contracts also involve betting on price direction and can be held long-term, how are they different from buying crypto on the spot market?
The differences are substantial:
1. Leverage
Spot buying: You can only buy as much crypto as you have USDT. 1,000 USDT buys 1,000 USDT worth of BTC.
Perpetual contracts: You can use leverage. With 1,000 USDT and 20x leverage, you're effectively trading with a 20,000 USDT position. Both gains and losses are calculated on the full 20,000.
2. Short-Selling
Spot only lets you buy and wait for prices to rise. Perpetual contracts let you short — open a short position when you think BTC will fall. If it does drop, you profit from the decline.
3. Funding Rate
Perpetual contracts have a unique mechanism called the "funding rate." It's settled every 8 hours and exists to keep perpetual contract prices from drifting too far from spot prices.
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How the Funding Rate Actually Works
This is the most distinctive concept in perpetual contracts, so it's worth explaining in detail.
Imagine if everyone in the market goes long (expects prices to rise). The perpetual contract price would get bid up well above the spot price. That's when the funding rate steps in to "rebalance."
When the funding rate is positive (e.g., +0.01%): Longs pay shorts. This incentivizes some traders to go short, bringing the long-short ratio back into balance.
When the funding rate is negative (e.g., -0.01%): Shorts pay longs. This incentivizes some traders to go long.
The funding rate is typically quite small, around 0.01%, and settles every 8 hours — three times per day.
Example:
You hold a 10,000 USDT BTC long position. The current funding rate is +0.01%.
Each settlement, you pay: 10,000 x 0.01% = 1 USDT
Three times a day is 3 USDT. Roughly 90 USDT per month.
That doesn't sound like much. But if the funding rate spikes to 0.1% (which happens during frenzied bull markets), that's 30 USDT per day, or 900 USDT per month. That's no longer a trivial amount.
Is the Perpetual Contract Price the Same as the Spot Price?
Not exactly, but very close.
Perpetual contracts use a "Mark Price" that factors in both the spot price and the contract price. This mark price is used to calculate your P&L and determine whether you're at liquidation risk.
The difference between the perpetual contract price and the spot price is called the "basis." The funding rate mechanism exists specifically to keep this basis small. So most of the time, perpetual contract prices track spot prices very closely — usually within 0.1%.
How Perpetual Contracts Work on Binance
Binance's perpetual contracts are primarily settled in USDT (there are also coin-margined contracts, but USDT-settled is the most popular).
Basic workflow:
- Transfer USDT from your spot account to your futures account
- Select a trading pair (e.g., BTCUSDT Perpetual)
- Choose your leverage multiplier (1x–125x)
- Choose long or short
- Enter the quantity and place the order
- P&L fluctuates in real-time while the position is open
- Close the position manually or get force-liquidated
Key terms explained:
Margin: The USDT you put up — this is the maximum you can lose (barring additional margin deposits).
Entry price: The price at which you opened your position.
Liquidation price: When the market price reaches this level, the system force-closes your position. This is liquidation.
Unrealized P&L: Your current floating profit or loss. It's called "unrealized" because you haven't closed the position yet.
Realized P&L: The actual profit or loss after you close the position.
Who Are Perpetual Contracts Suited For?
Good fit:
- Traders with experience who understand leverage risk
- Those who want to profit during downtrends (shorting)
- Short-term traders (holding for hours to days)
- People with strict risk management discipline (setting stops, controlling position sizes)
Not a good fit:
- Complete beginners
- People who don't understand leverage
- Long-term crypto investors (funding rates erode profits)
- Anyone who can't afford to lose their entire capital
Perpetual vs. Delivery Contracts
Besides perpetual contracts, Binance also offers "delivery contracts."
| Feature | Perpetual Contracts | Delivery Contracts |
|---|---|---|
| Expiration | None | Yes (weekly, monthly, quarterly) |
| Funding rate | Yes | No |
| Price basis | Very small | Can be larger |
| Best for | Short-term trading | Medium-term trading, hedging |
| Liquidity | Very high | Moderate |
Most retail traders use perpetual contracts because they're more flexible and have better liquidity.
Important Risk Warnings
Losses can happen extremely fast: At 100x leverage, a 1% price move against you means liquidation. BTC can easily move 1% within a single minute.
Don't treat contracts like gambling: Many people think futures is just a 50/50 guess on direction. But in reality, fees, funding rates, and slippage push your effective win rate below 50%. Trading without a strategy or discipline guarantees long-term losses.
Always set a stop-loss: This isn't a suggestion — it's a survival rule. Every single futures trade should have a stop-loss. A position without one is like a car without brakes — a crash is inevitable.
Control your position size: Don't put all your money into the futures account. Only allocate capital you can afford to lose completely. The bulk of your funds should stay in spot or in the bank.
Start with low leverage: If you decide to try futures, start with 2x–3x leverage. Build experience first, then consider whether to increase leverage. Beginners who jump straight to 20x or 50x almost invariably get liquidated.
Perpetual contracts are a powerful but dangerous tool. Used well, they can help you profit in any market condition. Used poorly, they can wipe you out completely. Make sure you fully understand the mechanics and risks before deciding whether to participate.