Free forex compounding calculator
Project a forex account's growth from compound gains — enter starting balance, percentage gain per trade, and number of trades, updated live, as you type.
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Hypothetical projection. Excludes taxes, inflation, and fees. Actual investment returns vary.
Results are estimates. Consult a professional.
How the forex compounding calculator works
A forex compounding calculator projects how a trading account could grow if you earn a consistent percentage return each period and reinvest all profits. The same compound interest math that applies to savings accounts applies here — the difference is that the 'interest rate' is a trading return, which is variable, not guaranteed, and can be negative.
The calculator steps the balance forward period by period: each period's balance is multiplied by (1 + return), then any regular deposit is added. Conservative traders model 3–5% monthly returns; aggressive targets of 10% or more per month are possible in principle but historically unsustainable for most traders due to losing months, drawdowns, and leverage risk.
Worked example: $10,000 at 5% monthly return for 12 months
A trader starts with $10,000, targets a 5% monthly return, and deposits an additional $500 each month. The projection shows where the account could be after 12 months if every month hits the target — a major assumption. This illustrates the mathematical potential, not a likely outcome.
Projected balance from $10,000 at various monthly returns and deposits
The table projects a $10,000 starting balance at three monthly return rates and three monthly deposit levels over 6, 12, 24, and 36 months. These are mathematical projections assuming consistent returns — not forecasts.
| Return / Deposit | 6 months | 12 months | 24 months | 36 months |
|---|---|---|---|---|
| 3% / $0/mo | $11,941 | $13,439 | $18,061 | $24,273 |
| 3% / $500/mo | $15,096 | $19,384 | $32,611 | $50,817 |
| 3% / $1,000/mo | $18,250 | $25,330 | $47,161 | $77,360 |
| 5% / $0/mo | $13,401 | $17,959 | $32,251 | $57,918 |
| 5% / $500/mo | $17,001 | $25,918 | $55,414 | $113,609 |
| 5% / $1,000/mo | $20,601 | $33,878 | $78,578 | $169,300 |
| 10% / $0/mo | $17,716 | $31,384 | $98,497 | $309,127 |
| 10% / $500/mo | $22,954 | $46,893 | $164,781 | $557,399 |
| 10% / $1,000/mo | $28,192 | $62,401 | $231,064 | $805,671 |
$10,000 starting balance. Assumes constant positive return every period — a highly optimistic assumption. Figures are mathematical projections only. No authoritative forex return source cited as returns vary entirely by trader and strategy.
Tips for using forex compounding projections
The numbers in a forex compounding calculator look spectacular. Before treating them as a trading plan, consider these realities.
- Model drawdowns, not just winning months — even a 10% losing month at 5% average return dramatically cuts the trajectory. Build a version of the table where every 4th month returns −15% to see a more realistic path.
- Use conservative return targets for planning — 1–3% monthly is the range where disciplined professional traders operate; 5% is ambitious; 10% per month sustained for years is nearly unheard of outside very short track records.
- Size positions to survive losing streaks — the compounding curve is only as good as your ability to stay in the game. A 50% drawdown requires a 100% gain just to break even. Risk management comes before compounding.
- Account for withdrawals and taxes — the projection assumes all profits stay in the account. Tax on trading profits and periodic withdrawals both reduce the compounding base and flatten the actual curve.
- Use the calculator to find the return you need, not to set expectations — enter your starting balance, a realistic timeline, and a target balance to back-calculate the required monthly return. If that number is above 5%, revisit the target.
Accuracy and limitations
This calculator applies the standard compound interest formula to a user-supplied periodic return rate. It assumes the return is constant and positive every single period — an assumption that does not reflect real trading, where returns fluctuate, losses occur, and drawdowns compound in reverse. The calculator does not model leverage, margin calls, spreads, commissions, slippage, overnight swap fees, or taxes, any of which can significantly reduce actual account growth.
Forex and CFD trading involves substantial risk and is not suitable for all investors. The majority of retail traders lose money. This calculator is a mathematical tool for exploring compounding mechanics, not a forecast of trading performance, and nothing here constitutes financial or investment advice.
Forex compounding terms defined
About this forex compounding calculator
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