Trading Compounding Calculator
See what the same return repeated every period does to an account over time.
Calculate GrowthCompounding is the idea that gains earn gains: each period's return is applied to a balance that already includes the last one. Applied to trading, it produces the kind of numbers that make a small account look like it is a few steady months away from something large. The calculator shows the arithmetic, and it is worth looking at honestly.
Enter a starting balance, a return per period and a number of periods, and it gives you the ending balance. A 3% return every month on 5,000 for a year gives about 7,130. For ten years it gives about 173,600. The figures look dramatic because the arithmetic assumes the same return arrives every single period, with no losing months, no withdrawals and no change in how you trade.
Real returns are uneven, and unevenness costs more than it seems. Losing months hurt compounding more than winning months help it, because a loss has to be recovered from a smaller balance. A month of minus 20% needs a month of plus 25% to cancel, as the drawdown recovery calculator shows.
Use this tool for what it is good for: understanding how much a return rate matters over time and how the numbers scale, and comparing a realistic return with a hopeful one. It does not predict what you will earn, and no rate of return is certain.
Ending balance
7,128.80
Gain
+2,128.80
Total return
+42.58%
Shows what the arithmetic would give if the same return repeated every period. Real returns are uneven, and no return is certain.
A calculator uses numbers you type in. To see what your own trades actually show, upload your trade history.
Analyze my tradesHow it is calculated
The formula
Ending balance = starting balance × (1 + return per period) raised to the number of periods.
Negative returns
A negative return per period shows how a steady loss shrinks the account. At minus 50% for two periods, the account is down 75%.
What it assumes
The same return every period, no deposits or withdrawals, and no fees beyond what is inside the return. Reality will differ.
A sanity check
If a rate looks too good, ask how many traders sustain it over years. Put your own recorded returns into the trading performance analyzer to see what you have actually done.
Frequently asked questions
Is a 3% monthly return realistic?
It is a figure used for illustration, not a benchmark. Sustaining any fixed return over years is difficult, and results vary greatly between traders and market conditions. Use your own recorded results to judge what is realistic for you.
Why does the result grow so fast over long periods?
Because the same percentage is applied to a growing balance, so each period adds more than the one before. That is the nature of compounding. It is also why small differences in the return, or a few losing periods, change the outcome by a large amount.
Does this account for losses along the way?
Only if you enter a return that already includes them, for example an average over good and bad months. Individual losing periods hit harder than the average suggests, so the real path is usually lower than a smooth one.
Does it include withdrawals or deposits?
No. The calculation assumes the balance is left to compound untouched. Deposits would increase the ending balance and withdrawals would reduce it.
Keep going
Holdy Lab content is educational and is not financial advice. Results describe the data you provide; they do not predict future results.