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Perpetra uses cross-margin: your entire balance backs all positions. No isolated margin—your account is one pool of collateral.

Key Concepts

Collateral — USDC you deposit. Backs your positions and covers losses. Initial Margin (IM) — Margin required to open a position. Depends on size and leverage. Higher leverage = lower IM per unit of notional. Maintenance Margin (MM) — Minimum margin to keep a position open. If your margin ratio drops below MM, you’re liquidated. Free Collateral — Collateral available for new positions or withdrawals. = Total collateral − Initial margin on open positions.

Leverage

MarketMax Leverage
BTC, ETH, SOL100x
Major alts20x
Other alts10x
Leverage amplifies gains and losses. 10x long that moves 10% against you = 100% loss of margin. Start low until you’re comfortable.
Larger positions face higher effective margin requirements. The system scales IM/MM with size to manage risk.

Margin Ratio

Margin Ratio = Total Collateral / Total Position Notional Higher ratio = safer. If it drops below the maintenance margin ratio, liquidation kicks in.

Withdrawing

You can withdraw free collateral only. Collateral locked as initial margin stays until you reduce or close positions. Unrealized profits don’t count as withdrawable until you settle PnL. Formula: Withdrawable = Balance − Initial Margin − Positive Unrealized PnL Settling PnL moves profits into your balance, making them withdrawable.

Formulas (Reference)

Total Collateral = Balance + Unrealized PnL
Free Collateral = Total Collateral − Initial Margin − Pending Short USDC
Account is liquidated when Margin Ratio < Maintenance Margin Ratio