How the Goal-Based SIP Calculator Works
Enter your goal amount, any savings you've already set aside for it, your expected annual return, and the number of years you have to invest.
The calculator first projects your current savings forward to see how much of the goal they'll cover on their own, then works out the monthly investment needed to make up the rest.
You'll see the required monthly investment, your total contribution over time, and the estimated returns that make up the remainder of your goal.
Benefits of Goal-Based SIP Planning
- Removes the guesswork: instead of picking a random SIP amount and hoping it's enough, you start from the number that actually matters — your goal — and work backward to the exact monthly figure required.
- Makes trade-offs visible: if the required SIP feels too high, you can immediately see how extending your time horizon, adjusting your expected return, or growing your current savings changes the monthly commitment.
- Credits savings you already have: any existing corpus earmarked for the goal is projected forward and subtracted from the target first, so you're never asked to invest more than the actual shortfall.
- Works for any goal, big or small: a child's education, a wedding, a home down payment, or a travel fund all follow the same math — only the target amount and timeline change.
- Encourages starting early: because required monthly investments shrink dramatically the longer your time horizon is, running the numbers early often reveals how much a delay of even a few years can cost you.
Formula Used
The required monthly investment is derived from the future-value-of-an-annuity-due formula, solved in reverse:
Required SIP = (Goal − FV of Current Savings) ÷ [ ((1+i)^n − 1)/i × (1+i) ]- iExpected monthly return (annual rate ÷ 12)
- nNumber of months in the investment period
- FV of Current SavingsCurrent Savings × (1+i)^n
Example Calculation
Saving 5,000,000 over 15 years with some current savings already in place.
- Goal Amount5,000,000
- Current Savings200,000
- Expected Return12% p.a.
- Investment Period15 years
- Required Monthly Investment ≈ 9,400 – 9,600 (varies slightly with rounding and exact inputs)
Important Assumptions
- The expected return you enter is an assumption for planning purposes, not a guaranteed outcome — actual investment returns fluctuate and are never assured.
- This calculator assumes a constant monthly investment and a constant expected return for the whole period, invested at the start of each month, which is how most SIP-style plans are structured.
- This calculator assumes the expected return rate compounds monthly at a nominal rate (annual rate ÷ 12), the convention most SIP calculators use. Some instead use the true effective annual compounding rate, which shows a slightly higher required monthly amount for the same inputs.
- This calculator doesn't account for taxes on investment gains, fees, or exit charges that may apply to your actual investments.


