Futures Margin, Leverage & Risk Calculator

How futures contracts work

A listed futures contract is a standardised agreement to buy or sell an underlying, or to settle the difference, on the terms of that contract. The terms include the size, the tick, the currency and the expiry. Buyers and sellers post collateral, called margin, and the result is marked as the price changes. This page uses the specification you type. It does not load a contract from an exchange.

Understanding contract size

The multiplier is the cash value of a one-point change in the price, for one contract. Notional exposure in this linear model is the entry price times that multiplier times the number of contracts. A micro contract and a standard contract on the same index can share a chart and differ completely in the cash of one tick. The name you type is a label. It does not look up a size.

Tick size and tick value

Tick size is the minimum price step. Tick value is the cash of that step, per contract. For a linear contract quoted in the settlement currency, tick value equals tick size times the multiplier. A price move of four ticks of 0.25 is a one-point move. If the tick value you type does not match that product, the page stops the profit figure until you choose which number is the cash basis. It does not overwrite either input.

Initial and maintenance margin

Initial margin is the collateral the schedule you are reading requires to establish the position. Maintenance margin is the separate ongoing reference in that same schedule. They can differ. A broker’s house margin can be higher than an exchange minimum. An intraday figure can differ from an overnight figure. During a volatile session the requirement can be raised. Both amounts on this page are what you type, including any increase percent you add yourself. Neither amount is a maximum loss.

Understanding leverage

Notional exposure of 5,000 against initial margin of 1,000 is a notional-to-initial-margin ratio of 5 to 1. That describes the position against the collateral you typed. If the account equity is 10,000, the same exposure is 0.5 to 1 against the account. The two ratios answer different questions. Margin is the collateral. A loss can be larger than the margin, and it can be larger than the cash in the account.

How futures profit and loss is calculated

Tick movement is the exit minus the entry, divided by the tick size. A long multiplies a rising price by a positive sign. A short multiplies that same rising price by a negative sign. Gross result is the signed tick movement times the tick value times the contracts, which matches the multiplier when the specification is consistent. Net result subtracts the round-trip costs once, and subtracts slippage ticks as extra cash. The chart uses those same amounts. It is a deterministic picture of the inputs, not a history of prices.

Margin calls and liquidation

Variation margin is cash that moves as the position is marked. If the account cannot meet a call, the broker can reduce or close the position under the agreement. The threshold on this page is the adverse move at which the equity you typed, after this position’s modelled result and the typed costs, equals the maintenance margin of this one position. Other open positions block that threshold, because their profit and their own maintenance requirement are not on the form. The result is labelled an illustrative maintenance-equity threshold.

Intraday and overnight margin

Some brokers publish a lower margin during the main session and a higher margin overnight or into a weekend. This page has one pair of margin figures. If you are checking the overnight case, type the overnight amounts, or add them through the margin-increase field. The label on the result will still be the figures you entered. It will not switch schedule by the clock.

Futures margin and options margin

A futures margin is collateral on a contract that can keep losing as the price moves. An options buyer can be limited to the premium, while a short option has its own assignment and margin rules. The options payoff calculator is an expiration model for option legs. Its results are not a futures margin, and the figures on this page are not an options margin.

Common mistakes

• Reading initial margin as the most the position can lose.
• Using a multiplier from a different contract size, such as a micro in place of a standard contract.
• Using a tick value that belongs to a different currency or a different contract.
• Ignoring the settlement currency when the account is in another currency.
• Typing an exchange minimum when the broker’s house margin is the figure that will be applied.
• Leaving maintenance margin blank in your own notes because the initial margin was the only number on the first screen.
• Forgetting the commission, the exchange fee and the slippage.
• Carrying an intraday margin into a calculation of an overnight position.
• Treating the illustrative threshold as the price at which a broker must liquidate.
• Assuming today’s margin will still apply after a volatility increase.

Worked example

The desk opens on a long position. Entry is 100, exit is 101, one contract, multiplier 50, tick size 0.25, tick value 12.50, initial margin 1,000, maintenance margin 800 and a round-trip commission of 4. Notional exposure is 5,000. The move is 4 ticks. Gross result is 50. Costs are 4. Net result is 46. Initial margin is 1,000. Maintenance margin is 800. Notional divided by initial margin is 5 to 1. These inputs are an illustration of the arithmetic. They are not a verified current exchange contract or a current margin schedule.

Assumptions and limitations

The workspace turns a contract you describe into notional exposure, initial and maintenance margin, and the cash result of a price move. A separate account section uses equity you type. Margin is collateral. It is not a maximum loss, and this page does not store an exchange margin schedule.

How the calculation works

Notional exposure is the entry price times the multiplier times the contracts. Tick movement is the exit minus the entry, divided by the tick size. For a linear contract, tick value should equal tick size times the multiplier. When the two agree, gross result is the signed price change times the multiplier times the contracts, which is the same as signed ticks times tick value times contracts. A short reverses the sign. Net result subtracts one round-trip cost, either a single total or itemised commission, exchange, clearing and other charges, plus slippage ticks. Initial and maintenance margin are the per-contract amounts times contracts. The notional-to-margin ratio divides exposure by initial margin. The account ratio divides converted exposure by the equity you type. Those two ratios stay separate. The maintenance threshold is the adverse move at which equity plus this position’s result equals this position’s maintenance margin, and only when no other margin is committed.

Assumptions

• Multiplier, tick size, tick value and both margin figures come from the specification you are reading.
• A mismatch between tick value and the multiplier stops the profit figure until you choose one cash basis. The page does not overwrite the inputs.
• The single fee total is for the quantity you are pricing. It does not scale in the quantity table. Itemised per-contract fees do.
• Account equity, other committed margin and the reserve are amounts you type. They are not read from a broker.
• A conversion rate is required before contract currency and account currency are combined.
• Contract quantity is a whole number.

A worked example

Long, entry 100, exit 101, one contract, multiplier 50, tick size 0.25, tick value 12.50, initial margin 1,000, maintenance margin 800 and commission 4. Notional exposure is 5,000. The move is 4 ticks. Gross result is 50. Net result is 46. Initial margin is 1,000 and maintenance margin is 800. Notional divided by initial margin is 5 to 1. The specification is illustrative. It is not a current exchange contract.

Limitations

Losses can exceed the margin and the equity you type. The chart stops at a tick range and is not a maximum loss. The maintenance threshold holds margin constant and ignores other positions’ profits, so it is withheld when other margin is committed. Intraday and overnight margins are not switched automatically. No live price and no live margin are retrieved. A negative buffer in this model is not a statement that a broker will issue a call.

Change one input at a time if a result looks surprising. The arithmetic is only as careful as the numbers you type, and it does not know your broker’s contract size.

Futures Margin, Leverage & Risk Calculator recalculates as you type. Reset restores the starting figures on that page. Those figures are an illustration of the arithmetic, not a market observation and not a record of anyone’s account. Copy and export repeat the same rounded results. Cash amounts on screen are shown to two decimal places. A conversion, a margin schedule, or a programme rule that you leave blank is not invented. A zero divisor, a stop on the wrong side of an entry, or a target-weight total other than 100 percent produces a written explanation instead of a blank or infinite number.