How it works
Initial margin is the capital requirement associated with opening a modeled exposure. Position notional can be entered directly or calculated from entry price, quantity and a contract multiplier.
The formula
Keep currency, units and time periods consistent. Percentage inputs use percentage points (enter 5 for 5%). Results are rounded only for display; tiny nonzero values may use scientific notation. Undefined ratios are shown as unavailable.
Position notional: $20,000; Leverage: 5x; Equivalent margin rate: 20.0%; Required margin: $4,000; Account equity (optional): $7,500; Equity remaining before other requirements: $3,500.
Calculation method
Leverage mode divides exposure by leverage. Direct-rate mode multiplies exposure by the entered initial margin percentage; the equivalent leverage is the reciprocal of that rate.
Interpretation
Subtracting required margin from entered equity shows a simple remaining-equity figure. A negative number identifies the mathematical shortfall before other positions and requirements.
Limitations
Initial margin differs from maintenance margin and does not cap loss. Cross margin, isolated margin, tiered requirements and portfolio offsets require platform-specific modeling.
Method and reference sources
Method and content checked 2026-09-20. These sources provide background, not endorsement or professional certification. The formula and limitations above define this calculator.
- CME Group — Calculating futures profit or lossContract size and price-movement context; verify your broker or exchange specification separately.
- Investor.gov — Understanding FeesInvestment fee and compounding context; enter the terms of your fund or account.
Frequently asked questions
Is required margin the most I can lose?
No. Margin is collateral for the exposure. Losses, liquidation and deficit treatment depend on the product, platform rules and execution.
What is a worked example for Margin?
Position notional: $20,000; Leverage: 5x; Equivalent margin rate: 20.0%; Required margin: $4,000; Account equity (optional): $7,500; Equity remaining before other requirements: $3,500.