SIP & Compound Interest Calculator Online Free
Project long-term compound wealth accumulation from regular monthly SIP deposits or one-time lump-sum investments. Features annual step-up contribution scaling, expected return rate tuning, and detailed year-by-year growth schedules.
SIP & Compound Interest Calculator In-Browser Workspace
Input data or select files to begin. 100% private, client-side execution with zero server transmission.
How to Use SIP & Compound Interest Calculator
- Step 1: Choose your investment strategy: Monthly SIP (Systematic Investment Plan) or Lump Sum (one-time principal).
- Step 2: Set your investment capital: enter your initial principal amount or ongoing monthly contribution.
- Step 3: Select your anticipated annual rate of return percentage based on your target asset class (e.g. 10-12% for broad index equities).
- Step 4: Specify your investment time horizon in years (from 1 up to 35 years).
- Step 5: Optionally enable Annual Step-Up percentage to automatically increase your monthly deposits as your career salary grows, and export your payoff table as CSV.
About SIP & Compound Interest Calculator
Compound interest represents interest earned not only on the initial principal capital but also on the accumulated interest from prior periods. Albert Einstein famously described compound interest as the eighth wonder of the world: "he who understands it, earns it; he who doesn't, pays it." For regular monthly systematic investments (SIPs), the future value is derived using the annuity formula: M = P * [((1 + i)^n - 1) / i] * (1 + i), where P is the periodic monthly deposit, i is the monthly interest rate (annual return divided by 12 and then divided by 100), and n represents total months (years multiplied by 12). For lump-sum investments, compound interest follows the exponential formula A = P * (1 + r/n)^(n*t). Over extended holding horizons of 15 to 30 years, compounding yields an inflection curve where cumulative interest earnings dramatically outpace the total principal capital contributed out-of-pocket.
Frequently Asked Questions
What is a Systematic Investment Plan (SIP)?
An SIP is an investment method where an investor commits a fixed monetary sum into a mutual fund or stock portfolio at consistent regular intervals (usually monthly). This leverages Dollar-Cost Averaging (DCA), buying more units when prices dip and fewer when prices rise.
What is an Annual Step-Up in SIP?
A step-up SIP automatically increases your monthly contribution by a chosen percentage (typically 5% to 10%) each year. This aligns your investments with annual wage raises, drastically amplifying your final terminal portfolio.
Are historical stock market returns guaranteed?
No. While broad equities indices like the S&P 500 have historically compounded around 10% to 12% nominal annually over rolling 30-year periods, market returns fluctuate from year to year.
How does inflation affect my final compounded wealth?
Inflation reduces the purchasing power of money over time. If your portfolio compounds at 10% and inflation averages 3%, your real inflation-adjusted wealth growth rate is approximately 7% per annum.