Trading Compounding Calculator
Give this calculator a starting balance and a return, per trade or per period, and it walks your account forward through every gain, profit split, and withdrawal to the ending balance. Then it puts that number next to what you would have banked withdrawing every gain instead, so you can see what letting profits ride is actually worth.
Set Up the Account
Your share of the gains. 100 means a personal account with no split. Losses hit the balance in full.
Taken out at the end of each period. Leave at 0 to compound everything.
Set the Return
Negative numbers are allowed, losing periods compound downward too.
Up to 500.
| Period | Start | Gain | Kept | Withdrawn | End |
|---|---|---|---|---|---|
Showing the first 60 periods and the final period. The totals above cover the full run.
What Is Compounding in Trading
Compounding in trading means your gains go back into the account, so the next position is sized against a bigger balance and the same percent return is worth more dollars than it was the period before. The math is the same compound interest arithmetic a savings account runs: next balance = current balance x (1 + return). Start $10,000 at 2 percent per period and the first gain is $200, the next one is $204, and 35 periods later the account has doubled without the return ever changing. That is the whole engine, and it is market agnostic: futures, stocks, forex, the arithmetic is identical. The difference in trading is that the return is not fixed, some periods are losers, and a loser compounds too, which is why the calculator above takes a negative return and walks it downward just as honestly.
Compounding by Win Rate and Risk-Reward
A trader does not earn a percent per period, they earn an edge per trade, so this calculator's win-rate mode builds the period return out of the numbers you actually track: risk per trade, win rate, risk-reward ratio, and trades per period. The formula is the expectancy math from our risk-reward calculator run through your trade count: return = risk x (win rate x RR - loss rate) x trades per period. Risk 1 percent a trade at a 40 percent win rate and 2:1 reward and each trade is worth 0.2 percent of the account on average, so 20 trades a period compounds a 4 percent period return. If you do not know your numbers yet, work them out on the risk-reward page first, its expectancy and breakeven outputs are exactly what this mode feeds on.
Daily, Weekly, and Monthly Compounding
Daily, weekly, or monthly is just the label on the period, the arithmetic does not care. What changes is how many compounding events you get: a 1 percent day compounds 20-plus times a month, a 1 percent month compounds 12 times a year, and the same percent at a faster cadence produces a wildly different curve. That is exactly how the daily projections you see around trading get so out of hand. Here is the honest part, and it applies to every number this page produces: no trader earns a fixed percent per period. Real equity curves draw down, stall, and streak, so a projection at a steady rate is an upper bound, an illustration of a rate held perfectly, not an expectation of what an account will do. Run the calculator at a daily cadence if you trade daily, and keep in mind the smooth curve it draws is the ceiling, it says nothing about the drawdowns you will sit through on the way.
Compounding vs Withdrawing
Reinvesting is not free money, it is a choice with a price on both sides. Compound, and every gain raises the base for the next one, but your profit stays at risk in the account and a losing streak takes back dollars you could have banked. Withdraw, and the money is real and yours, but the account stops growing and each period pays you the same flat gain. The comparison line in the results above prices that choice with your own numbers: it runs your inputs once with your withdrawal plan and once taking every gain out as it lands, then shows the gap between the two ending positions. So the question is not which strategy wins on paper, compounding wins on paper whenever the return is positive. The question is how much paper growth you are being paid for keeping profit in the market, and whether that number is worth it to you.
Compounding a Funded Account
A funded account changes the compounding math in one specific way: the split only touches your gains. Win $1,000 on a 90 percent split and $900 stays yours; lose $1,000 and the account is down the full $1,000, there is no firm absorbing 10 percent of a loser. The calculator models it exactly that way, split applied to gains only and losses hitting the balance whole, so a funded projection compounds slower than a personal one at the same return. Payouts fit the same frame: a payout cadence is really a withdrawal schedule, so enter your planned payout as the withdrawal and the projection shows what taking money off the table does to the curve. One reality check before you plan a long compounding run on a funded account: the drawdown limit is there the whole time, and a projection that survives 60 periods on this page can still be one bad week from liquidation in practice. If you are still picking which firm to run this math on, the prop firm finder sorts them by how you actually trade.
The Compounding Table
The table under the results is the projection with the smoothing taken off: one row per period, showing where the balance started, the gain, what the split let you keep, what you withdrew, and where the period ended. It is the same information a trading compounding chart would draw, in a form you can actually check, pull out one row, redo the arithmetic by hand, and it either matches or you found a bug worth telling us about. Long runs stay readable: past 60 periods the table shows the first 60 rows plus the final row, and the totals above it cover the full run either way. And if the balance reaches zero, the run stops and the table says so plainly, because an account that blows up does not keep compounding, on this page or anywhere else.
More Tools
The Risk-Reward Calculator works out the expectancy and breakeven win rate this page's win-rate mode runs on, and the Position Size Calculator turns a risk percent into contracts for your actual funded account. The rest of the lineup lives on the tools hub.
Frequently Asked Questions
Does compounding work in trading the way it does in a savings account?
No. The formula is identical, but a savings account pays a fixed rate on a schedule and a trading account does not, your return swings trade to trade and some periods are negative. So a savings projection is a forecast, while a trading projection at a steady rate is an upper bound, it shows what a rate would build if you held it perfectly, which nobody does. Use the projection to compare plans, not to book future profits.
How do I compound a funded account with a profit split?
Enter your split percent and the calculator applies it to gains only, which is how funded accounts work: a 90 percent split keeps $900 of a $1,000 winner, but a $1,000 loser costs the account the full $1,000. That asymmetry means a split does more damage to a compounding curve than the headline percent suggests, the firm shares your upside and none of your downside. Model your payout schedule as withdrawals on top of the split and the projection gets close to funded reality.
Should I compound or withdraw my trading profits?
On paper compounding wins whenever your return is positive, that is what the comparison line on this page shows. In practice withdrawn money is safe and compounded money is still at risk, so the honest answer depends on how proven your edge is and what the cash is for. A common middle road is withdrawing a fixed share of each period's profit and compounding the rest, which the withdrawal field models directly. Run it both ways and look at the gap, if it is small, the decision is easy.
What does compounding 1 percent a day actually require?
Steady wins with almost no losing stretches, which is the part the projections leave out. One percent a day compounds to about a quarter of the account in a single 22-day trading month, and the inputs that produce it are steep: risking 1 percent per trade at 2:1 with one trade a day, you need a 67 percent win rate against the 33 percent breakeven that ratio implies, and you need to hold it month after month. Win streaks like that happen; equity curves built on them level off, because variance drags every real win rate back toward its long-run average. So run the number and enjoy the curve, then plan for the drawdowns the smooth line already assumed away.