Tax Impact Calculator

See how much of your investment growth you actually keep. Enter the amount, the return you expect and your tax rate to compare the pre-tax and post-tax outcome.

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How to use this calculator

  1. Enter amount invested
  2. Enter expected annual return
  3. Enter investment period
  4. Enter tax rate on gains — Check the current rate for your asset and holding period.
  5. Choose when tax is paid — Capital gains are taxed at sale; interest income is taxed every year.
  6. Enter expected inflation
  7. Read the result — it updates as you type.

The formula used

Taxed at sale: (P × (1+r)t) − tax on the gain  ·  Taxed yearly: P × (1 + r×(1−tax))t

P
Amount invested
r
Annual return as a decimal
tax
Tax rate as a decimal
t
Years

These two produce noticeably different results even at the same tax rate. When tax is charged annually, the money taken away stops compounding forever. When it is deferred to sale, the whole amount keeps working until the end.

Worked example

₹10,00,000 at 12% for 10 years, taxed at 12.5% on the gain at sale.

  • Pre-tax value₹10,00,000 × 1.12¹⁰ = ₹31,05,848
  • Gain₹21,05,848
  1. Tax = ₹21,05,848 × 12.5% = ₹2,63,231
  2. After tax = ₹31,05,848 − ₹2,63,231 = ₹28,42,617
  3. Post-tax return = 11.00% a year instead of 12%

Tax cost one percentage point of annual return here. Taxed yearly at the same rate, the ending value would be lower still.

When tax is charged matters as much as how much

Two investments at the same return and the same tax rate can end up thousands of rupees apart, purely because of when the tax is collected.

Taxed every year: fixed deposits, most interest

Interest is added to your income and taxed annually, whether or not you withdraw it. The tax leaves your account and never compounds again. This is why a 7% FD in the 30% bracket behaves like a 4.9% investment.

Taxed once at sale: equity, mutual funds, property, gold

Nothing is taxed until you sell. The full amount compounds for the entire holding period and you settle up at the end — which is materially better, even at the same rate.

The practical takeaways

  • Compare investments on their post-tax return, never the headline rate.
  • Holding longer often lowers the rate as well as deferring the bill.
  • Then check the result against inflation — the real return is what actually changes your life.

This is general information, not tax advice. Rates and rules change; check yours.

Tips and common mistakes

Getting more out of it

  • Switch "when tax is paid" between the two settings at the same rate. The gap is the value of tax deferral.
  • Use the post-tax return, not the headline rate, when choosing between a deposit and a fund.

Mistakes to avoid

  • Comparing a fixed deposit and an equity fund on their advertised returns, when the tax treatment differs completely.
  • Assuming tax paid yearly is equivalent to the same tax paid at sale. Money taken early never compounds again.
  • Overlooking surcharge and cess if they apply to you — enter a slightly higher effective rate.

Frequently asked questions

Why is tax paid yearly worse than tax paid at sale?

Because money paid in tax each year is gone and cannot compound. Deferring the same tax to the end lets the full amount keep growing for the whole period.

Which investments are taxed annually?

Interest income — fixed deposits, recurring deposits, savings interest and most bonds. It is added to your income and taxed at your slab rate as it accrues.

What tax rate should I enter?

For interest, your income tax slab rate. For capital gains, the current rate for that asset and holding period. Check the current rules rather than assuming.

Does this include surcharge and cess?

Not separately. If they apply to you, enter a slightly higher effective rate to include them.

Capital Gains Calculator

Short-term and long-term capital gains at a rate you choose.

Tax & Inflation Inflation-Adjusted Return Calculator

Your real return once inflation is removed.

Tax & Inflation FD Calculator

Maturity value of a fixed deposit with compounding.

Fixed Income Lump Sum Calculator

Growth of a one-time investment at an expected annual return.

Investment Mutual Fund Return Calculator

Returns on a mutual fund investment using NAV or amounts.

Mutual Funds Gold vs FD Calculator

Compare a gold investment against a fixed deposit.

Gold
Disclaimer: These calculators are for educational and informational purposes only. Results are estimates based on the inputs provided and should not be considered financial, investment, tax, or legal advice.