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Compound Interest Goal Calculator

Simulate EMI prepayments to cut years off your loan, or use Reverse SIP to figure out the exact monthly savings needed for your target financial goal.

EMI PrepaymentReverse SIPStep-Up SIPLoan RefinanceFIRE Corpus

Investment Strategy Mode

Calculate forward growth or work backwards from your target goal

₹
₹500₹10,00,00,000
%
1%30%
Yrs
1 Yrs40 Yrs
6% Inflation
%
1%15%

Goal Wealth Compounding Pathway

Comparing nominal value vs real inflation-adjusted purchasing power

Invested Amount
Nominal Wealth
Real Value (6% Inflation)
Goal Target: ₹1.00 Cr

Total Principal Invested

Future Value₹2.40 Cr
Total Principal Invested
₹85.49 L (35.7%)
Estimated Net Returns
₹1.54 Cr (64.3%)
Required Monthly Investment
₹47,497
Goal Achievement Plan

To reach your target goal of ₹1,00,00,000 in 15 years at 12% return, you need to invest ₹47,497/month.

Key takeaway

What is a compound interest goal calculator?

A compound interest goal calculator works backwards from a future wealth target to estimate the monthly SIP, recurring investment, or starting lump sum needed today, using expected return, time horizon, and inflation.

How do you calculate compound interest backwards?

Start with the target future value, choose a return rate and number of months, then solve for the contribution required each month to reach that goal.

Who should use this calculator?

Investors, SIP planners, parents, and retirement savers can use it when deciding how much to invest for education, home purchase, or long-term wealth goals.

Should I include inflation?

Yes, include inflation when the goal is years away because future money may buy less than the same amount today; inflation adjustment keeps the target realistic.

  • 1.Enter your future goal amount and investment horizon.
  • 2.Choose expected annual return and optional inflation rate.
  • 3.Compare monthly SIP, target value, total invested, and compound growth.
First-hand example: In VVmatrix testing, a long-term wealth target can require a much higher monthly SIP after inflation is enabled, because the calculator preserves real purchasing power instead of only showing nominal future value.
Investor.gov compound interest calculatorInvestor.gov compound interest definition

Backwards Compound Interest

Reverse SIP

Key Takeaway: Work backwards from a target future corpus to find the exact required monthly investment, fully adjusted for inflation.

Reverse-engineer monthly SIP from future goals

Step-by-Step Methodology
1. 2. Goal-Based Reverse SIP & Inflation

Decision Sandbox

2. Inflation Adjustment

Sub-millisecond real-time calculation latency

3. Cum. Interest Saved

100% Client-Side Privacy (Zero data leaves your browser)

Mathematical Formula & Methodology
PMT = FV × [ r / ((1 + r)^n - 1) ]

FV = Future Target Wealth, r = Periodic Interest Rate, n = Total Investment Periods (Months), PMT = Required Monthly Contribution

Real-World Example

Targeting a ₹1,000,000 nest egg in 20 years at 10% CAGR requires a steady monthly contribution calculated backwards, adjusted for purchasing power.

Legal Disclaimer: Disclaimer: This tool is for educational simulation purposes only. Consult a certified financial advisor before making major money moves.