Forex compounding calculator
Compounding means each period's result is applied to the new balance, not the starting one. The calculator shows the maths of a steady rate in both directions, so you can see why small, consistent risk matters more than big wins.
By the TradeFather education team · Updated 27 Oct 2026 · Educational content, not financial advice
Forex compounding calculator
Compounding works in both directions. Real results vary period to period; this shows the maths of a steady rate, not a forecast.
Results assume a USD account and 100,000-unit standard lots. Brokers can differ on contract size, spreads and commission, so confirm with your platform's own specification before trading.
- Formula: ending balance = start × (1 + r)ⁿ, where r is the % per period and n is the number of periods.
- Losses compound too: losing 5% ten times leaves about 60% of the account.
- Recovering from a loss needs a larger % gain than the loss itself.
- Real trading results are uneven — a compounding table is maths, not a promise.
What 2% per month looks like
Notice the asymmetry: a 40% drawdown needs about a 67% gain just to return to the start. That is why professional risk rules focus on limiting losses first.
| Start | Rate | Periods | Ending balance |
|---|---|---|---|
| $1,000 | +2% / month | 12 | ≈ $1,268 |
| $1,000 | +2% / month | 36 | ≈ $2,040 |
| $1,000 | −2% / month | 12 | ≈ $785 |
| $1,000 | −5% / month | 10 | ≈ $599 |
Why 'double your account every month' plans fail
Real months include losing streaks. A plan that assumes a gain every single period breaks on the first bad week.
Chasing a high % per period forces bigger lot sizes, which makes a large drawdown far more likely.
Spread, commission and swap reduce each period's net return, so the real curve is flatter than the table.
Using compounding sensibly
- 1Fix risk per trade
Keep risk to a small % of the current balance, sized with the lot size calculator.
- 2Recalculate sizes as the balance changes
Lot size grows when the account grows and shrinks after losses — that is compounding done safely.
- 3Review monthly, not daily
Judge results over many trades; one day tells you almost nothing.
Risk notice
Forex and CFD trading is high risk. Leverage magnifies losses as well as gains, and regulated brokers' own disclosures typically show that most retail CFD accounts lose money. Never trade money you cannot afford to lose. TradeFather is an independent education and tools provider — not a broker or financial adviser — and does not provide forex signals or execute trades.
If you live in India or Pakistan: RBI does not permit residents to fund overseas online forex/CFD platforms, and SBP has declared offshore forex, margin and CFD platforms illegal for residents. This guide explains how markets work; it is not a recommendation to open such an account.
Frequently asked questions
+What is a realistic monthly return in forex?
There is no reliable 'normal' figure; most retail traders lose money. Treat any fixed monthly target as a planning assumption, not an expectation.
+Should I compound weekly or monthly?
Mathematically the frequency matters less than the rate and consistency. Recalculating lot size from the current balance before each trade is the practical form of compounding.
+Does the calculator include spread and fees?
No. Enter a net return after costs if you want a closer estimate.
Sources and further reading
Official and primary sources, links checked 27 Oct 2026. Rules, schedules and broker terms change — always confirm on the source.