Prop firm leverage: margin, position size and scaling risk

Available leverage determines one part of a position’s margin requirement. It does not determine how much loss your programme permits or make a position safe. Check three things separately: instrument margin, the account’s remaining loss headroom and the combined exposure of all positions. Increasing account size or adding copied accounts changes the cash amounts at risk.

Read the account and instrument specifications

Checked on 16 October 2026, FTMO’s international CFD account-specifications FAQ states Standard leverage up to 1:100 and Swing up to 1:30. It directs traders to each symbol’s platform specifications and says capital is simulated at every stage. These are offer-specific upper/base figures, not a promise that every instrument uses that margin ratio or that every region has the same offer.

The Swing FAQ restricts Swing to 2-Step, not 1-Step or Instant, and does not allow changing a purchased Standard account to Swing. Do not infer a leverage upgrade or relaxed rules merely from becoming funded. Other providers and programmes require their own current specifications.

Same position, different margin, same price sensitivity

Fictional linear instrument: assume a position with notional value 100,000 already converted into account currency, equity 20,000, simple notional/leverage margin and no tiering or other adjustments.

Effective leverage is 100,000/20,000 = 5 times equity in both rows. Changing margin leverage does not change the price loss of an unchanged position. Unused leverage is not insurance against gaps or slippage. Actual margin may use another calculation method, conversions, symbol tiers or hedging treatment; use the platform calculation.

Size from a chosen cash budget, not the entire loss limit

Fictional forex sizing inputs: cash budget 500, stop distance 50 pips, assumed pip value 10 per standard lot in account currency, round-trip commission allowance 10 per lot and volume step 0.01. Estimated cost per lot at the assumed stop is 50 × 10 + 10 = 510. Size before rounding is 500/510 ≈ 0.98039; round down to 0.98 lot. Estimated loss including that commission is 0.98 × 510 = 499.80.

Ignoring commission would suggest 1 lot and a total of 510, over the chosen 500 budget. Confirm the actual contract size, tick/pip units, currency conversion, minimum and step; do not label a standard lot a mini lot. Spread, swaps and slippage still need their applicable treatment. A stop order does not guarantee this estimated loss or execution price.

For illustration, a position estimated at 500 over 20 pips would lose 500 × 28/20 = 700 before costs if execution extended the move to 28 pips. A generic percentage buffer cannot guarantee protection in every market.

Calculate headroom using the current floor

The programme’s loss formula determines which balance, equity, open P&L, costs, high-water mark and day boundary matter. A balance used to set a floor does not mean floating losses are ignored when that floor is enforced. Fixed, daily-recalculated and trailing limits are different.

Fictional floor check: current equity 98,200 minus current applicable floor 97,000 gives 1,200 headroom. Suppose existing positions could lose a further 300 from current prices and a new position has a 500 estimated loss budget including its specified costs. That uses 800 and leaves 400 before unbudgeted costs, gaps or other movements. Do not subtract a floating loss twice if it is already in current equity. This arithmetic is not a recommendation to consume that headroom.

Scaling changes absolute risk

At a selected 1% of a 100,000 calculation base, the amount is 1,000; at 110,000 it is 1,100. That is a 10% increase, not a doubling. The programme’s loss floor may not grow in the same way. Six increases of 25% in lot size multiply it by 1.25⁶ ≈ 3.81 at unchanged stop and cost assumptions; relative risk is not constant unless the relevant base changes accordingly.

Three positions with 500 planned loss each can lose 1,500 together. A historical correlation coefficient is not permission to discount that contractual stress exposure. Likewise, identical trades across five accounts can hit all five limits together. Check allocation, copying, software permission and each account’s actual floor before adding size or accounts. Neither a winning streak nor a preset number of trades establishes a safe scaling date or expected income.

Test the operational calculation

Retain the rule version and symbol export, currency, current floors, open orders, planned cash risk and rounding calculation. Replay day resets, a changed stop distance, spread expansion, terminal restart and connection loss. Test only documented controls in the exact software version. Pausing new entries does not close existing positions, and emergency closing can itself suffer slippage.

The JPTC EA Hub is customer-operated software; its documentation does not imply universal provider approval, a verified pass-rate advantage or a particular unlisted monitor. The separate JPTC Algo is hosted by JPTC, with no customer installation, operation or VPS needed. Company-published Algo statement figures are not an independent audit or evidence that this position-sizing example prevents challenge failures.

JPTC Algo: company-published screenshots

Illustrative company screenshots, not evidence of challenge outcomes. Refer to the statement results page for the reported period.

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