Lump Sum Calculator
Calculate the future value of your one-time investment. See how the power of compounding multiplies your wealth over years.
Investment details
Projected Returns
Total corpus
₹3.11 L
₹ 3,10,585
Total Invested
₹1.00 L
One-time payment
Wealth Gained
₹2.11 L
210.6% absolute gain
Wealth Growth Trajectory
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How to use this calculator
- 1Enter your starting capital: Got a bonus? Sold a property? Punch in the exact lump sum amount you want to park in the market today.
- 2Set realistic expectations: A Nifty 50 Index fund generally hovers around 12%. Small caps might touch 15%, but with way more volatility. Pick a conservative number.
- 3Define your horizon: Equity needs time to breathe. A 3-year horizon is risky; a 10-year horizon is where compounding actually starts flexing its muscles.
The raw power of putting it all in on Day 1
When a massive chunk of money hits your bank account—say, ₹10 Lakhs from your company RSUs or an inherited fixed deposit—you face the ultimate dilemma: Should I just dump it all into the market today, or play it safe and drip-feed it via an SIP?
Here's the brutal truth: Mathematically, Lump Sum annihilates SIP. Stock markets generally go up 70% of the time. By dropping your entire capital on Day 1, you force every single rupee to start compounding immediately. With an SIP, half your money is just sitting in a savings account doing nothing while the market runs away.
The "Rule of 72" Cheat Code
Want to know exactly when your money will double without opening a spreadsheet? Professional fund managers use this mental math trick.
Years to Double = 72 ÷ Expected Annual Return Rate
Let's say you expect a realistic 12% return from a Flexi Cap fund. 72 ÷ 12 = 6 years.
That means your ₹10 Lakhs automatically becomes ₹20 Lakhs in exactly 6 years. You do absolutely nothing. It becomes ₹40 Lakhs in 12 years.
But what if the market crashes tomorrow?
This is the psychological nightmare of lump sum investing. You invest ₹20 Lakhs on Monday. On Wednesday, the US Fed hikes rates, the Nifty drops 3%, and your portfolio bleeds ₹60,000. It physically hurts.
If a sudden 15% drop will make you panic-sell, do not use the lump sum route. Instead, use a Systematic Transfer Plan (STP). Park that ₹20 Lakhs in a safe Liquid Fund, and set an automated instruction to transfer a fixed amount into equity every week. You average out the entry risk while still earning decent debt returns on your parked cash.