Plan trade risk, reserve buffers, and capital rollovers with precision. Test expected outcomes quickly today. Build steadier exposure rules across changing market conditions daily.
Note: Compound mode uses current risk capital and the risk percentage. Fixed mode uses the fixed risk amount, capped by available risk capital.
| Field | Example Value | Purpose |
|---|---|---|
| Initial Capital | 100,000 | Starting equity for the full roll schedule. |
| Reserve % | 20 | Protected capital kept outside active risk deployment. |
| Risk % per Trade | 2 | Exposure applied to current risk capital in compound mode. |
| Fixed Risk Amount | 1,500 | Flat risk amount used in fixed mode. |
| Win Rate % | 55 | Expected share of winning trades. |
| Average Win / Loss | 1.8R / 1.0R | Average outcome multiple relative to one unit of risk. |
| Trades per Period | 12 | Number of repeated decisions in each cycle. |
| Cost per Trade | 25 | Expected fees, slippage, or execution cost. |
1. Start Reserve = Start Equity × (Reserve % ÷ 100)
2. Start Risk Capital = Start Equity − Start Reserve
3. Expected R = (Win Rate × Average Win R) − (Loss Rate × Average Loss R)
4. Risk per Trade = Start Risk Capital × (Risk % ÷ 100) in compound mode
5. Fixed Risk per Trade = Lesser of Fixed Risk Amount or Start Risk Capital
6. Gross Expected PnL = Risk per Trade × Expected R × Trades per Period
7. Net Expected PnL = Gross Expected PnL − (Cost per Trade × Trades per Period)
8. End Equity = Start Equity + Net Expected PnL
9. End Risk Capital = End Equity − End Reserve
10. Break Even Win Rate = Average Loss R ÷ (Average Win R + Average Loss R)
Enter your starting capital first.
Set a reserve percentage to protect part of the equity.
Choose compound mode for dynamic sizing or fixed mode for flat sizing.
Enter the expected win rate, average win in R, and average loss in R.
Add the number of trades per period and the total periods.
Include execution cost per trade for a more realistic forecast.
Click calculate to display the results above the form.
Review the full roll table, export CSV, or save the page as a PDF.
A risk capital roll calculator helps you plan exposure with discipline. It tracks how capital changes after each trading period. It also separates protected reserves from deployable risk capital. That matters when conditions shift quickly. Good risk control protects survival first. Growth comes after that. This tool supports scenario planning, portfolio control, and position sizing reviews.
Rolling risk capital means recalculating exposure after every period. A gain can increase future risk capacity. A loss can reduce it. This feedback loop keeps position sizing aligned with current equity. It also prevents stale assumptions. Risk managers use this process to limit overextension. Traders use it to keep drawdowns manageable. Teams use it to compare aggressive and conservative policies.
This calculator combines reserve ratios, expected trade performance, trade frequency, and operating costs. The result is a practical forward path. You can estimate ending equity, reserve balance, risk capital, and expected return per period. You can also compare compounded sizing against fixed sizing. That makes the model useful for stress testing and budgeting. It works well for trading plans, speculative strategies, and internal risk reviews.
The output is not a guarantee. It is a planning baseline. Real outcomes will vary because sequences matter. Slippage, volatility, liquidity, and psychology also matter. Use the schedule to test policy strength. Raise reserve levels when uncertainty rises. Lower trade risk when drawdown tolerance is tight. Review break-even win rate before increasing exposure. Strong capital roll rules create consistency, resilience, and better long term decisions.
Initial equity sets the base. The reserve percentage creates a protected buffer. Risk per trade defines exposure for each decision. Win rate and average win or loss in R estimate expectancy. Trades per period control repetition. Costs reduce performance and should never be ignored. Fixed sizing creates smoother position values. Compounded sizing reacts faster to gains and losses. By changing one input at a time, you can see which assumption drives the largest shift in future capital. That improves governance, communication, and risk policy design.
Small changes can alter survival odds.
A risk capital roll calculator projects how deployable capital changes after each period. It separates protected reserves from active risk capital and applies your assumptions repeatedly.
Reserve capital is the protected portion of equity. It is held back from position sizing so exposure stays controlled during volatile or uncertain periods.
Compound mode recalculates risk from updated risk capital each period. Fixed mode keeps the chosen risk amount constant unless available risk capital falls below that amount.
The model uses expectancy, not trade sequencing. Real outcomes can differ because losses and wins rarely arrive in a smooth order.
R is the reward or loss multiple relative to one unit of risk. A 2R win earns twice the amount risked on a trade.
Yes. Increase reserve percentage, lower risk per trade, reduce average win, or raise costs to model tougher conditions.
Use the output as a planning guide, not a promise. Review the period table, test several scenarios, and compare aggressive versus conservative policies.
Yes. The schedule table can be downloaded as CSV. The page also offers a print-ready option for saving the report as a PDF.
Important Note: All the Calculators listed in this site are for educational purpose only and we do not guarentee the accuracy of results. Please do consult with other sources as well.