Compounding Calculator

Compounding vs Flat Returns — What's the Difference?

This calculator supports two modes, controlled by the Reinvest Profits toggle:

Compounding (Reinvest ON) — each period's profit is added to your capital, so the next period's return is calculated on a larger base. Your capital grows exponentially.
Flat Returns (Reinvest OFF) — you withdraw or set aside each period's profit and trade with the same original capital every time. Your capital stays the same; the total gain grows linearly.

Most traders start with flat returns — taking profit out and keeping the same base capital. As discipline and confidence grow, compounding becomes a powerful wealth-building tool.

How the Calculator Works

Compounding Mode:

Final Value = Capital × (1 + Return %)^Periods

Each period, the gain is calculated on the current balance (capital + all previous gains).

Flat Returns Mode:

Total Gain = Capital × Return % × Periods

Total Income = Total Gain (withdrawn each period)

Each period, the gain is calculated on the original capital only. Capital stays unchanged.

Example — Compounding vs Flat

Starting Capital: ₹1,00,000

Return: 2% per day

Duration: 20 trading days (1 month)

Compounding: ₹1,00,000 × (1.02)^20 = ₹1,48,595 — Total gain: ₹48,595

Flat: ₹1,00,000 × 2% × 20 = ₹40,000 — Capital stays ₹1,00,000

With compounding, you gain ₹8,595 more in just 20 days. Over 6–12 months the difference becomes dramatic.

Same setup over 60 trading days (3 months):

Compounding: ₹1,00,000 × (1.02)^60 = ₹3,28,103 — Total gain: ₹2,28,103

Flat: ₹1,00,000 × 2% × 60 = ₹1,20,000 — Capital stays ₹1,00,000

Compounding generates nearly double the flat returns over 3 months. But remember — this assumes 2% profit every single day, which requires exceptional consistency.

How to Use This Calculator

Enter your starting capital — the amount you trade with.
Set the return per period — the percentage you aim to make each day, month, or year. Be realistic. Even 1–2% per day is ambitious.
Choose the period type — Daily (trading days, not calendar days), Monthly, or Yearly.
Enter the number of periods — e.g., 20 trading days for one month, 240 for one year.
Toggle Reinvest Profits — ON for compounding (reinvest gains), OFF for flat returns (withdraw gains, trade same capital).
Click Calculate — see the growth chart, period-by-period breakdown, and total gain.

When to Use Each Mode

Use Flat Returns if you trade to generate regular income — taking 2% per day out of ₹5L means ₹10,000/day in consistent income without increasing risk.
Use Compounding if you are growing your account and don't need to withdraw — let the profits work for you and build a larger capital base over time.
Hybrid approach — many traders compound for a set period (say, 3 months), then withdraw a portion and restart. This balances growth with income.

A Word of Caution

Consistency is hard — making 2% every single day without a loss is unrealistic for most traders. Use this calculator to understand the potential, not as a guarantee.
Losses break compounding — a 50% loss requires a 100% gain to recover. One bad day can wipe out weeks of compounding. Risk management is non-negotiable.
Scale changes the game — strategies that work at ₹1L may not work at ₹50L due to slippage, liquidity, and psychological pressure. Factor this in when projecting large compounding targets.
Use with the Position & Lot Size Calculator — as your capital compounds, your position size should be recalculated to stay within your risk percentage.