Perpetual Futures and Margin in Crypto: What They Are, Funding, and How to Avoid Liquidation

The friendly name hides the real engine: a perpetual futures contract is leverage, and the leverage, not the contract, is what turns a small move against you into the loss of your whole collateral. It is a contract on an asset's price with no expiry date, held as long as you like, kept near spot by funding, the periodic payments between longs and shorts. A perp is really a convenient wrapper around an old risk: borrowed money against collateral, where big leverage stands next to a zeroed account.

The word leverage sounds like a profit accelerator, and beginners grab the maximum, x50 or x100, without counting the risk. I mostly trade futures and gold, and I treat crypto perps with caution exactly because of the leverage: the instrument works, but it is dangerous for anyone who climbs in without a stop. Let's go through it in order: what a perpetual is, what funding has to do with it, how margin and leverage multiply the result, and at what price liquidation arrives.

In this article we'll cover:

• a perpetual futures contract has no expiry and is held as long as you like, tied to spot by funding;
• funding is a payment between longs and shorts several times a day, not an exchange fee;
• margin is your collateral, and leverage multiplies both the profit and the loss from a single price move;
• in my experience the main risk here is not the instrument but the leverage: at x100 a one-percent move is enough to be liquidated.

Let's start with what a perpetual futures contract even is and why it has no term.

What is a perpetual futures contract and how does it differ from a regular one?

A perpetual futures contract is a derivative contract on an asset with no expiry date, which a trader can hold for an unlimited time.

A regular futures contract has a settlement date, by which its price converges with the underlying asset. A perpetual has no such date, which raises the question: what keeps the contract's price near spot. The answer is funding, unpacked in the next section. So the one real difference sits in the term: a classic contract closes at its settlement date, a perpetual lives without one, and funding plays the anchoring role instead of a date.

From this follows a difference in use, too. Classic futures on regulated exchanges like CME are my benchmark of honest exchange volume: through them you see the real interest of large capital, the so-called smart money. Crypto perps trade on crypto exchanges and decentralized venues, and volume there is built differently. The instrument belongs to derivatives and futures, where you trade not the asset directly but a contract on its price. The takeaway for a beginner is simple: a perp is convenient because you don't watch an expiry or roll from contract to contract, but you pay for that with funding on a long hold.

In short: A perpetual futures contract has no expiry and is held as long as you like; unlike a regular future it has no term, and funding keeps its price tied to spot.

What is funding (the funding rate) in simple terms?

Funding is a periodic payment between the two sides of a trade, which the exchange calculates several times a day, most often every eight hours, and on some exchanges more often. It is not a platform fee, it is a settlement between the traders themselves.

The logic is simple. When a perp trades above spot, longs pay shorts; when below, shorts pay longs instead. That way funding works like a spring that pulls the contract's price back to the market: whoever pushed the skew is penalized in favor of the opposite side. In essence, the price is held near the market not by the exchange but by the traders themselves.

Two things matter in practice. First: on a long hold funding is a cost, and if the rate runs against you, the payments add up and eat the result. So the rate is worth watching, and exchanges show it in real time. Second: a high funding rate is also a signal of overheated sentiment, when the crowd has piled into one side, and on the crypto market such skews are often followed by a sharp reversal. I look at this through the lens of volume analysis: where the crowd has piled in and who stands against it.

In short: Funding is a payment between longs and shorts every eight hours, not an exchange fee; it holds the perp's price near spot, and on a long hold it works as a cost against you.

Margin and leverage: how they multiply profit and loss

Margin trading means trades on the exchange's borrowed funds, where your own money serves as collateral, and that collateral is called margin. Leverage is the ratio of borrowed funds to your collateral: at x10 leverage, for every dollar of yours the exchange adds nine more, and you control a position ten times your own funds. In crypto, leverage can be very large, up to x100 and above.

Leverage works the same in both directions, and that is the key idea. With x10, a one-percent move your way gives ten percent of profit on the collateral. Nice. But the same one percent against you takes those same ten percent. Leverage doesn't make you more right, it only multiplies the result of any move, winning or losing. Hence the unpleasant conclusion: the larger the leverage, the smaller the move against you needed to lose everything. High leverage doesn't raise your chance to earn, it only pushes the point of total loss right up to the entry price. That is exactly why I keep leverage low: I need a buffer to survive ordinary swings without flying out on liquidation for no reason. How leverage itself works and why it is so dangerous I break down in detail in the course section.

Worth knowing the two margin modes, since they affect risk control directly. With isolated margin, only the collateral of a specific position is at risk, and a liquidation hits only it, the rest of the account is intact. With cross margin, the whole account balance serves as collateral, and one bad position can drag everything down with it. For a beginner, isolated margin is safer: it limits the loss to one trade and doesn't let greed risk the whole account. And the main misconception about leverage I'll name plainly: many think big leverage is needed to earn more from a small account. In reality the same result comes from lower leverage and a little patience, without the risk of instant liquidation. Leverage solves the problem of position size, not the problem of profit.

In short: Leverage multiplies any move both ways: at x10 a one-percent gain is ten percent of profit, a one-percent loss is ten percent of the collateral; isolated margin and low leverage are safer for a beginner.

At what price does liquidation happen and how to avoid it

Liquidation is the forced closing of a position by the exchange when the collateral stops being enough to maintain an open leveraged trade. A margin call usually comes first, the warning that the collateral is melting; but on high leverage, from margin call to liquidation is mere moments, because the buffer is tiny.

The liquidation price depends mostly on leverage: the larger the leverage, the closer the liquidation level to entry. Rough markers help you feel it. At x100 a move of about one percent against you is enough to be liquidated, at x50 about two, at x20 about five, at x10 about ten. Maintenance margin and fees shift the exact figures a little, but the order is just that. A simple example. You open a 1,000-dollar position at x50, controlling a volume of 50,000. The price moves against you by two percent, and two percent of 50,000 is exactly your 1,000 of collateral. At that moment the exchange closes the position, the collateral is at zero. On the crypto market a domino effect is added: mass liquidations in one direction push the price further and trigger new ones, which is why sharp spikes on perps are often the trails of such cascades.

Protection from liquidation comes down to three simple things, and they are all in your hands. Low leverage, so the liquidation level stands far away. A stop-loss before the liquidation level, so the trade is closed by your plan, not by the exchange. And small risk per trade. These rules work only together: low leverage without a stop is still dangerous, and a stop on huge leverage may not fire in time on a spike. My approach: I keep risk around one to two percent of the account and place the stop before I compute the position size, not the other way round. If the stop is set correctly, it never comes to liquidation: you exit on your own stop far earlier and with a small loss. The exchange will never close you better than you would have closed yourself on a stop, since liquidation is a market close at the worst possible moment, often with an extra fee on top.

In short: The liquidation price is closer to entry the higher the leverage: at x50 two percent against you is enough to zero the account; low leverage, a stop before the liquidation level, and one to two percent risk per trade keep you away from it.

How it looks on the crypto market: risks on a concrete example

Let's pull it all together on a live example. Crypto futures mean enormous volatility, and not by accident: everyone comes here for easy pickings, from housewives to teachers, and that flow of speculative money is what rocks the price. On stocks there is almost none of this, where the dull participants count dividends and intrinsic value. On perps the crowd's money comes to the market and is redistributed, not in the crowd's favor. A simple illustration of the force: you buy bitcoin at 71,000, it drops in the moment to 50,000, and on the contract you lose close to a third of the value here and now, multiplied by leverage to a full wipeout.

Market makers play their part too, with no conspiracy theory. A market-maker bank gives a two-sided quote, you can buy from it and sell to it, supplying the market with liquidity. But when the crowd has piled massively into longs, there is essentially no one to sell to it, and it is the large players who go short against it, at the least by agreement with the exchange to smooth the imbalance. Then a cascade of liquidations of overheated longs moves the price down, and the crowd's funds go into the market. That is why I watch volume: it shows where large capital really stands, not where the crowd is looking. How all of this works on crypto futures and why the risks are exactly here I break down with examples in the video: risks of trading crypto futures.

In short: On perps the crowd's money is redistributed not in its favor: the speculative inflow creates volatility, and a cascade of liquidations of overheated longs carries funds into the market; volume shows where large capital stands.

If you're new to crypto, I've gathered the basics in the cryptocurrencies guide.