Bitcoin Margin Call & Liq Alert on Binance

a stock margin call is a warning with a deadline. a perp never asks: when equity drops under maintenance margin the engine force-closes at liq = entry × (1 − 1/leverage + mmr) for a long — with Binance's real BTC bracket, 0.40% at the first step.

so the call price is where the decision stops being yours. above it you still choose: close, add margin, or hold.

you're long BTC at $84,053, 20x, $2,500 notional — $125 of margin posted. Binance charges 0.40% maintenance margin at that size: $84,053 × (1 − 1/20 + 0.004) = $80,186.

there is no earlier call: that price is both the warning and the event. your room is $3,866 (4.60%), and funding — $0.75 a day at the example rate — spends it while you hold. estimate — exchanges compute exact liq from live margin; always double-check on your venue.

binance prices BTC in brackets, not at one flat rate: the first runs to $300,000 notional at 0.40% maintenance margin and 150x max. clear it and the next runs to $800,000 at 0.50% and 100x.

this page stores Binance's first 5 brackets for BTC and holds the last rate flat past them — check very large sizes on the venue itself.

binance runs the deepest perp book in the world, which cuts both ways: your stop fills at a real price, and your liquidation fills at a real price too. there is no thin-book mercy on binance.

bitcoin does both: a 2.4% typical day on 1.7% of minute-to-minute movement, 3.9% at its widest, and no pattern to which one gets you. $472M across 21372 forced closes in 7 days, none over 3% of it: attrition, not one event, split 55%/45% long/short.

on isolated margin the position's own margin is the whole buffer, so entry, leverage and bracket fix the call price — every number on this page is that case.

on cross the wallet backs the position, so the line moves with your balance and your other positions, and a cross call can take the whole wallet. treat the isolated number as the closest the engine could reach you.

close: before the call you exit at a real price; at the call you fill into the wick, plus the venue's liquidation fee.

add margin: more collateral lowers the effective leverage and pushes the call away — and puts more on the table if the wick gets there anyway.

hold, knowingly: fine when the wick is part of the plan and the size was built for it. the alert below makes sure the warning reaches you while all three are still open. free, no signup.

on BTC the first bracket is not the same trade on every venue: bybit runs 0.33% to $300,000 at 150x, hyperliquid 1.25% to $150,000,000 at 40x. bybit is the cheaper first bracket by 0.92% of entry on the same position.

run your size through each venue with the links below — the lower-rate venue's extra room costs nothing.