Compounding Calculator
Visualize the power of compound growth in your trading account over time
Ready to Calculate
Enter your values above and click calculate to see compound growth projections
Risk Warning: Trading forex and CFDs carries a high level of risk and may not be suitable for all investors. You could lose some or all of your invested capital. This calculator is a general educational tool and is not financial or investment advice — it does not account for your broker's contract specification, so confirm the contract size and pip definition your broker uses before sizing a position.
What Is Compound Growth in Trading?
Compound growth (also called compound interest) means earning returns on your returns. Each time your account grows, the next gain is calculated on the larger balance — so profits generate their own profits and growth accelerates over time instead of rising in a straight line.
Simple growth adds the same fixed amount every period. Compound growth multiplies the balance, which is why the curve bends upward the longer you stay consistent and keep reinvesting.
For traders, compounding turns a small, repeatable edge into meaningful account growth. A modest average return applied consistently — and left in the account rather than withdrawn — will usually outperform occasional oversized wins followed by heavy losses.
How to Use the Compounding Calculator
Project your account growth in three quick steps.
Enter Starting Balance
Type the capital you begin with (for example $10,000). This is the base every future gain compounds on.
Set Gain % per Period
Enter your average percentage return for one period (day, week or month). Keep it realistic — 1% to 3% is a sensible planning range.
Choose Number of Periods
Set how many periods you will compound for. The longer the horizon, the more powerful the exponential curve becomes.
The Compound Growth Formula Explained
The calculator applies the standard compound interest formula to your trading balance:
Starting Balance
The principal — your account equity at the start. A larger base compounds faster, but risk should scale with it.
Gain per Period
Your average return for one period, as a decimal (2.5% = 0.025). Consistency matters more than the headline number.
Number of Periods
How many times the return compounds. Because it is an exponent, time has an outsized effect on the result.
The Rule of 72 (Fast Doubling Estimate)
Divide 72 by your average period return to estimate how many periods it takes to double your money. At 2.5% per period that is 72 ÷ 2.5 ≈ 29 periods; at 3% it is 24 periods; at 1.5% it is 48 periods. Higher returns compound faster — but they almost always carry higher risk.
Real-World Calculation Walkthroughs
Why Drawdowns Break Compounding
Compounding works in both directions: losses shrink the base that future gains are calculated on. Protecting capital comes before chasing returns.
| Account Drawdown | Remaining Capital on $10,000 | Gain Needed to Breakeven |
|---|---|---|
| 10% Loss | $9,000 | +11.1% |
| 25% Loss | $7,500 | +33.3% |
| 50% Loss | $5,000 | +100.0% |
| 75% Loss | $2,500 | +300.0% |
Common Compounding Mistakes to Avoid
Withdrawing Profits Too Soon
Pulling gains out resets your base and kills the compounding effect. Leave profits in the account so future returns apply to a larger balance.
Chasing Unrealistic Returns
Planning for 10%+ per period forces oversized positions and leverage. One blow-up can erase months of gains — consistency beats big bets.
Ignoring Drawdowns
A single deep loss demands a disproportionately large gain to recover. Risking a fixed, small percentage per trade keeps the curve rising.
Frequently Asked Questions About Compounding
Everything you need to know about compound growth, the Rule of 72 and compounding a trading account.
Reinvest Your Cash Rebates
Every lot you trade generates a rebate, win or lose. Because PaidRebate credits that cash back to your wallet, you can reinvest it into your account — adding to the base that compounds over time.