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Lumpsum calculator: what will a one-time investment grow to, after tax?

An educational estimate, not financial advice. The result depends on the assumptions below, so check them against your own figures.

Inputs

For equity mutual funds and shares, resident individuals, tax year 2026-27.

Your numbersOnly you know these. Change them to get your own answer.

Invested once, at the start.

₹

₹5 lakh

How long you stay invested.

years
Check theseNobody knows future returns. Try a lower one too.

An assumption, not a forecast. Use the return after the fund's expense ratio.

%
Filled in for youInflation 6%, no FD comparison unless you add one
More assumptions

For the today's-rupees figure.

%
Compare with an FD

Optional: leave empty to skip the FD comparison.

%

Your slab rate plus cess. FD interest is taxed every year.

%

Verdict

₹5.00 lakh leaves you about ₹12.10 lakh after 10 years

It grows to ₹12.97 lakh, and selling it all costs ₹87,343 in tax. You put in ₹5.00 lakh. What you keep is worth about ₹6.75 lakh in today's rupees.

Example figures: ₹5 lakh for 10 years. Use your own.

After 10 years, if you sell it all
  • You put in₹5.00 lakh
  • You keep after tax₹12.10 lakh

    After ₹87,343 capital-gains tax

Equity returns are not guaranteed. A fund can fall in value, and can stay below what you put in for years. The return used here is an assumption, not a forecast; try lower ones to see how the answer changes.

How equity gains are taxed
  • Held 12 months or less: short-term, taxed at 20% of the gain.
  • Held longer: long-term, taxed at 12.5% of the gains above ₹1,25,000 in a year.
  • Plus 4% cess on the tax. PPF interest is tax-free; FD and RD interest is taxed every year at your slab rate.
  • The amounts above already have this tax taken off.

Returns compound yearly: 12% a year is 12% a year, about 0.95% a month. Calculators that use 1% a month show slightly more.

Saved scenarios

At other returns

What you would keep after tax if the fund did worse or better.

    Not modelled: weigh these yourself

    Show the workingEvery step of the sum, with the numbers above.
    Show the chart and year-by-year tableHow the fund grows against what you put in, year by year.
    Fund value, month by month
    Show year by year
    YearPut in so farValue at year end
    1₹5.00 lakh₹5.50 lakh
    2₹5.00 lakh₹6.05 lakh
    3₹5.00 lakh₹6.66 lakh
    4₹5.00 lakh₹7.32 lakh
    5₹5.00 lakh₹8.05 lakh
    6₹5.00 lakh₹8.86 lakh
    7₹5.00 lakh₹9.74 lakh
    8₹5.00 lakh₹10.72 lakh
    9₹5.00 lakh₹11.79 lakh
    10₹5.00 lakh₹12.97 lakh

    Values before tax. Tax is due only when you sell.

    Show every monthThe full month-by-month table, with a CSV download.

    How this works

    The whole amount grows at the return you enter. When you sell, the gain is taxed as long-term above the yearly exemption if you held it more than 12 months, or as short-term if not. What you keep is the value less that tax, also shown in today's rupees.

    Assumptions and sources

    AssumptionValueSourceAs of
    Capital-gains tax on equity, short / long term20% / 12.5%PIB, 'Union Budget 2024-25: Key Tax Reforms and Relief Measures' (July 2024): long-term gains on all financial and non-financial assets 12.5% without indexation; exemption on equity gains raised to ₹1.25 lakh a year from FY 2024-25; short-term gains on specified financial assets 20%. ₹1,25,000 exemption also in CBDT ITR-1 validation rules AY 2026-27, rule 217. Unchanged for tax year 2026-27 (PIB New India Samachar, February 2026, p. 25). Holding periods (listed securities one year, all other assets two years): CBDT FAQs on the new capital-gains regime, PIB release PRID 2036604 (July 2024); units held 12 months or less are treated as short-term.2026-10-21
    Yearly exemption on equity gains₹1,25,000PIB, 'Union Budget 2024-25: Key Tax Reforms and Relief Measures' (July 2024): long-term gains on all financial and non-financial assets 12.5% without indexation; exemption on equity gains raised to ₹1.25 lakh a year from FY 2024-25; short-term gains on specified financial assets 20%. ₹1,25,000 exemption also in CBDT ITR-1 validation rules AY 2026-27, rule 217. Unchanged for tax year 2026-27 (PIB New India Samachar, February 2026, p. 25). Holding periods (listed securities one year, all other assets two years): CBDT FAQs on the new capital-gains regime, PIB release PRID 2036604 (July 2024); units held 12 months or less are treated as short-term.2026-10-21
    Fund return before tax (scenarios)7% / 10% / 12%CapitalVerdict default assumption from project spec; user-editable, not a forecast2026-10-19
    Inflation a year7% / 6% / 5%CapitalVerdict default assumption from project spec; user-editable, not a forecast2026-10-19

    Questions

    Lumpsum or SIP: which is better?

    If returns are positive on average, money invested earlier has longer to grow, so a lump sum tends to end higher. A SIP spreads the risk of investing just before a fall. Many people with a lump sum move it in over a few months to split the difference.

    How is the gain taxed?

    Held more than 12 months, the gain is long-term: the first ₹1.25 lakh in a year is tax-free and the rest is taxed at 12.5%. Held 12 months or less, it is short-term and taxed at 20%. Add 4% cess.

    Why compare with an FD?

    An FD's interest is taxed every year at your slab rate, while a fund's gain is taxed once, when you sell. Comparing what each leaves after tax shows the real gap. Leave the FD rate empty to skip it.

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