Required margin is the amount reserved to support a leveraged position. Trade risk describes potential loss as price, execution and costs change. Margin is not a fee and it is not a maximum-loss amount. Changing leverage changes required margin; it does not change the pip value of a position whose size stays the same.
Margin and risk answer different questions
A margin calculation asks how much account capacity a position needs under the applicable contract rules. A loss estimate asks what a particular adverse price move would cost at that position size. Passing the first check does not answer the second. Available margin is not a suggested amount to put at risk.
The trade’s notional exposure is another separate figure. It describes the full position represented by the contract, rather than the money reserved as margin. Review exposure, margin and planned loss together. Confusing any two can make a small deposit requirement look like a small financial exposure when it is not.
One position, two different calculations
Assume a hypothetical 0.20-lot EUR/USD position, 100,000 EUR per lot, a price of 1.1000 and a USD account. The position represents EUR 20,000, or USD 22,000 at that assumed rate. With a simple 1:100 forex margin model, EUR 20,000 divided by 100 is EUR 200, equivalent to USD 220.
Now consider a planned 20-pip adverse move. The pip value is USD 2.00, so that move implies a USD 40.00 price loss before separate charges. USD 220 of margin and USD 40 of planned price loss describe different things. Neither is a guarantee of the final loss. The trade could close at a worse price or remain open without the planned exit.
- Position
- 0.20 × 100,000 = EUR 20,000
- Notional at EUR/USD 1.1000
- USD 22,000
- Margin at assumed 1:100
- EUR 200 = USD 220
- Pip value
- USD 2.00 per pip
- Planned 20-pip price loss
- USD 40.00 before separate charges
This simplified forex model uses hypothetical inputs. Fixed margin, tiers, other positions and broker settings can change required margin.
Changing leverage does not resize the position
Keep the position shown at 0.20 lot and change only the leverage assumption from 1:100 to 1:50. Under the same simple model, required margin doubles from USD 220 to USD 440. The pip value is still USD 2.00, and a 20-pip adverse move still produces the same USD 40.00 price loss before charges.
By contrast, doubling the position size doubles its pip value under these assumptions. Higher available leverage can allow a larger position, but the resulting increase in exposure is a position-size decision. Do not treat a lower margin requirement as a reduction in the risk of an unchanged position.
A normal stop is an exit instruction, not a guarantee
A normal stop loss instructs a close when its trigger conditions are reached. In fast or gapping markets, the execution price can differ from the selected level. For the same hypothetical USD 2.00-per-pip position, a fill 25 pips away instead of the planned 20 produces a USD 50.00 price loss, before commission or financing.
A guaranteed stop is a separate contractual feature where explicitly offered. Do not assume an ordinary MetaTrader stop has that protection or that this broker offers the feature. Check the actual execution terms. Broker stop-out rules may also close a position independently of your chosen stop if account conditions require it.
Write down the assumptions behind a loss estimate
For a simple forex worksheet, planned price loss equals stop distance in pips multiplied by pip value at the selected size. To work backwards, divide a hypothetical price-loss budget by the stop distance and the one-lot pip value. Keep all amounts in the account currency and confirm the contract size first.
Suppose the worksheet uses USD 40, a 20-pip distance and USD 10 per pip for one lot. The arithmetic gives 40 ÷ (20 × 10) = 0.20 lot before costs. This is a mathematical illustration, not a recommended budget, position or stop. Commission, financing and adverse execution can make the actual loss larger. A broker’s minimum volume and volume step also constrain the order you can enter.
Check the whole account before relying on one trade
Used margin, equity and free margin reflect the wider account. Other positions can lose value or require additional margin while this trade is open. A hedge should not be assumed to remove all margin requirements or market risk. Read how the account handles margin changes and position closure.
Before using a calculator result, confirm the current instrument settings, leverage tier, conversion rate and existing exposure. Then consider whether the loss assumptions include costs and imperfect execution. Practising this process on demo can reveal unit mistakes, but a demo result does not establish live performance or suitability. Leveraged forex and CFDs involve a high risk of loss.
Sources and editorial note
This Traders Trust educational guide explains general mechanics using original, hypothetical scenarios. The sources below support the definitions and platform behaviour. Other providers’ terms do not describe a Traders Trust account. No investment recommendation or personal suitability assessment is provided.
Sources checked 6 November 2026. This is a source-check date, not a claim of publication or professional review. Current account, instrument and execution terms take precedence over an illustration.
- MetaTrader 5 Help: Retail forex margin calculationForex margin formula, currency conversion and alternative symbol settings.
- IG Help Centre: Leverage and marginThe relationship between margin, leverage and full position exposure; provider scenarios are not used as broker terms.
- IG Help Centre: Order typesDifference between a normal and a contractually guaranteed stop; not a claim that Traders Trust offers guaranteed stops.