Financial calculators
Thirteen calculators covering investing, saving, loans and tax, each built on the standard formula the calculation is actually based on, with the formula itself shown on the page.
Compare broker charges instead
Brokerage cost calculator
Work out what a month of your actual trading costs at each Indian broker, using their published charges.
Investing and savings
SIP Calculator
Work out what a monthly SIP could grow to at a given return rate, using the standard future-value-of-annuity formula every SIP calculator is built on.
Lumpsum Investment Calculator
Work out what a one-time lumpsum investment could grow to at a given annual return rate, using standard compound growth.
EMI Calculator
Work out the monthly EMI, total interest and total payment for a loan, using the standard reducing-balance EMI formula.
CAGR Calculator
Work out the compound annual growth rate (CAGR) between a starting and ending value over a given number of years.
Compound Interest Calculator
Work out the maturity value of a principal amount compounding at a given rate and frequency over a given period.
Capital Gains Tax Calculator
Estimate long-term or short-term capital gains tax on listed equity shares or equity mutual funds at current FY 2025-26 rates.
Simple Interest Calculator
Work out simple interest and the total repayable amount on a principal, rate and time period.
Step-up SIP Calculator
Work out what a SIP grows to when the monthly investment increases by a fixed percentage every year, instead of staying flat.
SWP Calculator
Work out how long a corpus lasts under a fixed monthly withdrawal, or what remains after a given period, assuming a steady return rate.
Inflation Calculator
Work out what something costing a given amount today will cost in the future at an assumed inflation rate.
Retirement Corpus Calculator
Work out the retirement corpus needed to sustain a given monthly expense, adjusted for inflation, over a given number of years in retirement.
PPF Calculator
Work out the maturity value of a Public Provident Fund account at the current government-set interest rate.
GST Calculator
Work out the GST amount and total price, either adding GST to a base price or extracting it from a GST-inclusive price, at current GST slab rates.
Frequently asked questions
Are these calculators free to use?
Yes. Every calculator on this page runs entirely in your browser using a standard, published financial formula. Nothing is submitted to BrokerLens or anyone else.
Which calculator should I use for SIP planning?
The SIP Calculator projects a regular monthly investment. If your monthly amount will increase each year, use the Step-up SIP Calculator instead - a flat SIP calculator understates the result.
What is the difference between the SIP and lumpsum calculators?
The SIP Calculator assumes a fixed amount invested every month; the Lumpsum Calculator assumes the entire amount is invested once, upfront. Use whichever matches how you actually plan to invest.
Do these calculators account for tax?
Only the Capital Gains Tax Calculator and GST Calculator compute tax directly. The others (SIP, lumpsum, SWP, PPF, retirement) show pre-tax growth; any tax due on withdrawal is not deducted.
Where can I compare actual broker charges instead of financial formulas?
Use the brokerage cost calculator, which compares real published charges across every broker BrokerLens tracks, rather than a generic formula.