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Futures Margin Calculator

Work out futures margin instantly with clear inputs, formula shown and shareable results.

About Futures Margin Calculator

Futures margin is a good-faith deposit against a much larger notional exposure. At 12% initial margin you control roughly eight times your capital, which magnifies both gains and losses on the full contract value.

Formula

Margin and leverage

Notional = price × lot size × lots; margin = notional × margin %; leverage = 1 / margin %

Worked example

With the default values below, Futures Margin Calculator returns Initial Margin Required of $270,000.00. Change any input above and every figure here is recalculated in your browser.

Inputs used

Futures Priceminimum 0
22,500
Lot Sizeaccepts 1–100,000
50
Initial Marginaccepts 0.5–100 %
12 %
Number Of Lotsaccepts 1–1,000
2

Results

Initial Margin Required
$270,000.00
Value Of One Contract
$1,125,000.00
Total Notional Exposure
$2,250,000.00
Effective Leverage
8.33

Step by step

  1. 1Values used
  2. 2Margin and leverage
  3. 3Initial Margin Required= 270,000.00
  4. 4Value Of One Contract= 1,125,000.00
  5. 5Total Notional Exposure= 2,250,000.00
  6. 6Effective Leverage= 8.33

Assumptions and limits

  • The result is derived only from the 4 inputs listed above. Anything not among them is not part of the calculation.
  • In particular, this calculator does not take inflation, tax, fees or charges or compounding frequency into account.
  • Figures are rounded for display to 2 decimal places, so totals built from several rounded parts can differ slightly from the unrounded arithmetic.
  • Figures are estimates for planning only. Market returns are not guaranteed, and rates, limits and tax rules change. This is not financial or tax advice — speak to a qualified adviser before acting.
  • This is an estimate for general information and not professional financial, tax or legal advice. See the full disclaimer for the limits that apply to this kind of calculator.

How these calculators are built and tested is described on the Methodology page. If a figure looks wrong, please report it.

Figures are estimates for planning only. Market returns are not guaranteed, and rates, limits and tax rules change. This is not financial or tax advice — speak to a qualified adviser before acting.

Frequently Asked Questions

What happens if the margin falls short?

The broker issues a margin call. Failing to meet it results in positions being closed out, often at the worst moment.

Why does margin change?

Exchanges raise margin when volatility rises, which can force deleveraging exactly when markets are stressed.

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