Margin Requirement Calculator: Initial and Maintenance Margin

Margin requirements are the guardrails of leveraged trading. Ignore them, and you're heading off a cliff at 120 mph. A friend who traded futures on Bybit learned this the hard way when he assumed his 10x position had more cushion than it actually did. A 4% dip—nothing unusual for crypto—triggered liquidation. His mistake wasn't directional. It was mathematical.

Understanding margin isn't optional. It's survival.

Photo by Maxim Hopman on Unsplash

Initial versus Maintenance Margin

Initial Margin is the cover charge—the minimum equity required to open a position. For a $100,000 position with 10% initial margin, you need $10,000 in the account. That's 10x leverage.

Maintenance Margin is the lifeline—the minimum equity you must maintain to keep the position alive. For that same $100,000 position at 5% maintenance margin, liquidation triggers when equity falls below $5,000. You've lost 50% of your margin before the exchange pulls the plug.

The gap between these two numbers is your buffer zone. It's where you're still in the trade but sweating.

Isolated versus Cross Margin

Isolated Margin is the compartmentalized approach. Each position gets its own dedicated margin pool. If it goes to zero, only that pool is drained—your other positions are safe. It's the "one bad apple doesn't spoil the bunch" strategy.

Cross Margin pools your entire account equity as margin for all positions. More cushion against liquidation, sure. But if the market turns against you across the board, you can lose everything. Every. Last. Dollar.

Cross margin shines for hedged positions where one leg offsets another. For naked directional bets? Isolated is usually the smarter play.

Leverage-Dependent Requirements

The higher you climb, the thinner the air:

• 2x: 50% initial, 30–40% maintenance


• 5x: 20% initial, 10–15% maintenance


• 10x: 10% initial, 5–8% maintenance


• 20x: 5% initial, 2–3% maintenance


• 50x: 2% initial, 0.5–1% maintenance


• 100x: 1% initial, 0.2–0.5% maintenance

At 100x, you've got a 0.2% margin of error before liquidation. A sneeze in the wrong direction and you're out.

Exchange Comparison

Different exchanges, different rules:

Binance: Tiered maintenance margin—bigger positions, higher margins. BTC perpetual ranges from 0.4% (Tier 1) to 4.0% (highest tier). The tiered approach means whale-sized positions pay more for the privilege of leverage.

Bybit: More consistent across position sizes—0.5–1.0% maintenance margin for major pairs. Simpler, more predictable.

OKX: Similar tiered system to Binance, with margins climbing for positions exceeding $1 million notional. The message is clear: scale up, pay up.

Futures Margin

Futures contracts carry higher margins than perpetuals—settlement dates add counterparty risk:

• BTC futures: 2–5% initial, 1–3% maintenance


• ETH futures: 3–7% initial, 2–5% maintenance


• Altcoin futures: 5–15% initial, 3–10% maintenance

Higher margins aren't the exchange being greedy. They're pricing in the additional complexity of a fixed settlement date.

The Bottom Line

Margin requirements aren't just numbers on a screen. They're the rules of the game. Learn them, respect them, and always maintain more equity than the minimum. The extra cushion isn't wasted capital—it's insurance against the inevitable day the market throws a tantrum.