Lumpsum & Mutual Fund Returns Calculator

A lumpsum is a one-time investment of a single amount (e.g. ₹5 lakh today), while a SIP (Systematic Investment Plan) spreads investing across regular monthly contributions (e.g. ₹10,000 every month). Lumpsum works best when you have a windfall (bonus, sale proceeds) and the market is reasonably priced; SIP works best for salaried earners because it averages your purchase price across market cycles (rupee-cost averaging). Both use the same underlying mutual fund — the difference is purely how money goes in. The lumpsum future value formula is FV = P × (1 + r)^n; SIP uses an annuity formula because each monthly contribution compounds for a different number of months.

CAGR (Compound Annual Growth Rate) is the annualised, smoothed rate that turns your start value into your end value over a given period, as if the investment grew by the same percentage every single year. Absolute return is just (end − start) ÷ start × 100, and is misleading for any period longer than a year. Example: ₹1 lakh growing to ₹2 lakh in 5 years is a 100% absolute return but only ~14.87% CAGR. Mutual fund factsheets always quote CAGR for periods over 1 year — that is the apples-to-apples comparison number.

Goal-based investing flips the calculation: instead of asking "what will ₹X grow to?" you ask "how much do I need today to have ₹Y in n years?". The formula is P = Target ÷ (1 + r)^n. For a ₹1 crore target in 15 years at 12% expected return, you need about ₹18.27 lakh today as a lumpsum. This is useful for retirement planning, your child's education corpus, or a house down payment — pick the goal first, then work backward to the investment required.

For equity mutual funds (≥65% in Indian equities), gains held over 12 months are long-term capital gains (LTCG) — taxed at 10% on profits above ₹1 lakh per financial year (12.5% on profits above ₹1.25 lakh from FY 2024-25 onwards under the revised regime). Gains under 12 months are short-term capital gains (STCG), taxed at 15% (20% from FY 2024-25). For debt mutual funds bought after 1 April 2023, all gains are taxed at slab rate regardless of holding period — indexation benefit was removed. The calculator above shows pre-tax returns; subtract your applicable tax rate to estimate net returns.

For Indian equity mutual funds (large-cap, flexi-cap, index funds), 11–13% CAGR is a reasonable long-term assumption based on Nifty 50 TRI history (15+ years). Mid-cap and small-cap funds may project 13–15% but with much higher volatility. Hybrid funds typically project 9–11%. Debt funds and liquid funds: 6–7%. Always model conservative (10%), base (12%), and optimistic (14%) scenarios — actual returns depend on entry valuation, fund manager skill, expense ratio, and exit timing.

Nothing leaves your browser. The calculation runs entirely client-side — no server call, no cookie, no analytics on your inputs. Refresh the page and the values reset to defaults. Switch modes (lumpsum / CAGR / goal) and each mode keeps its own inputs while you compare.