Overview
India's investment landscape spans government-backed instruments (PPF, EPF, NPS), market-linked vehicles (mutual funds via SIP), fixed-income options (FDs), and everything in between. Each category carries its own return profile, tax treatment, risk level, and liquidity constraints.
Deciding where to invest, and how much to put into each instrument, requires modelling actual numbers rather than guessing. These seven free calculators cover the range of Indian retail investment options, from the safety of PPF to the growth potential of equity SIPs. Each one is free, needs no registration, and produces shareable results instantly.
What to Look For
Accurate, scheme-specific formulas. A PPF calculator that uses a simple compound interest formula gets it wrong: PPF interest is calculated on the minimum balance between the 5th and last day of each month, not on the year-end balance. EPF has its own compounding rules and separates employee, employer, and EPS contributions. Look for calculators that follow the actual scheme rules instead of a simplified approximation.
Instant results without sign-up. The best calculators produce results the moment you change an input. No email address, no account, no waiting, just immediate, shareable numbers. Every calculator in this list works this way.
Shareable output via URL state. When you model a scenario, say a ₹10,000 SIP for 15 years at 12%, the URL should update to encode your inputs so you can share or bookmark the exact scenario. That matters when you're comparing options or talking it through with a spouse, parent, or financial advisor.
Indian-specific inputs. Rupee denomination, financial year alignment (April-March), Indian rate benchmarks (EPF at 8.25%, PPF at 7.1%), and Indian tax slabs all need to line up correctly. Calculators built for Western markets don't handle these well.
Our Picks
SIP Calculator
The SIP Calculator is the most widely used investment calculator in India, and it earns that spot. Systematic Investment Plans in equity mutual funds are the recommended starting point for most retail investors, pairing rupee cost averaging (which reduces timing risk) with the compounding power of staying invested over the long term.
Enter your monthly SIP amount, expected annual return, and investment duration, and the calculator shows total amount invested, estimated returns, and total corpus at maturity, along with a chart that makes the compounding curve visible. A ₹5,000 monthly SIP at 12% per annum over 20 years produces a corpus of approximately ₹49.9 lakh on just ₹12 lakh invested, and seeing that gap on screen tends to land harder than reading it as a sentence.
It answers two questions well: how much should I invest monthly to reach a specific goal, and what will my current SIP amount grow to over 10, 15, or 20 years?
PPF Calculator
The PPF Calculator models the Public Provident Fund, one of the most tax-efficient savings instruments available in India. PPF falls under the EEE (Exempt-Exempt-Exempt) category: contributions are deductible under Section 80C, interest earned is tax-free, and the maturity amount is tax-free too.
At the current government rate of 7.1% per annum (compounded annually), ₹1,50,000 invested per year for 15 years, the minimum lock-in, grows to approximately ₹40-42 lakh. The calculator handles the correct PPF compounding methodology and lets you model extensions (PPF can be extended in 5-year blocks after the initial 15-year term), partial withdrawals from year 7, and the effect of varying annual contributions.
It's a useful one for salaried employees planning their Section 80C investments, and for anyone after guaranteed, tax-free long-term savings.
EPF Calculator
The EPF Calculator models your Employee Provident Fund balance, the mandatory retirement savings account for salaried employees in India earning up to ₹15,000 basic salary (though many employers enrol all employees regardless).
It handles three contribution streams correctly: your 12% of basic salary, the employer's 3.67% of basic salary into EPF, and the employer's 8.33% into EPS (Employee Pension Scheme, which sits outside the EPF corpus). At the current EPF interest rate of 8.25% per annum, it shows your projected corpus at retirement, helping you understand how much EPF alone will provide versus how much you still need to save separately.
It's particularly useful if you're weighing a job change and want to understand the tradeoffs between withdrawing and transferring your EPF balance.
NPS Calculator
The NPS Calculator models the National Pension System, India's voluntary, market-linked retirement scheme with a uniquely strong extra tax benefit under Section 80CCD(1B): ₹50,000 per year over and above the regular ₹1.5 lakh 80C limit.
Enter your age, monthly contribution, expected return, and the allocation between equity (Tier E), corporate bonds (Tier C), and government securities (Tier G). The calculator projects your corpus at age 60, the mandatory annuity purchase (40% of the corpus must be annuitised), and the lump sum available at maturity (60% of the corpus, tax-free). For a 30-year-old investing ₹5,000 per month at an 80/20 equity-bond split, the projected NPS corpus at 60 is substantial enough that it's worth running your own numbers to see why the 80CCD(1B) deduction alone makes NPS worth a look.
Fixed Deposit Calculator
The Fixed Deposit Calculator helps you compare FD options across different tenures, banks, and compounding frequencies. India's FD market is fragmented: small finance banks often offer 8.5-9.5% on 1-3 year deposits versus 6.5-7.5% at large PSU banks, and the compounding frequency (monthly vs quarterly vs annually) shifts the effective yield more than most people expect.
Enter the principal, interest rate, tenure, and compounding frequency, and the calculator shows simple interest versus compound interest totals, maturity value, and quarterly interest payout if you're relying on the FD for regular income. Senior citizen rates, typically 0.25-0.50% higher, are supported too.
Lumpsum Calculator
The Lumpsum Calculator models one-time investment scenarios, for when you have a windfall, a bonus, a maturity receipt, or an inheritance to put to work. Unlike SIP, lumpsum returns depend heavily on entry timing: investing at a market peak and investing at a market trough produce very different outcomes over the same period.
It shows the growth of a one-time investment at a specified expected annual return over your chosen duration, giving you the final corpus and total returns. It pairs naturally with the SIP Calculator: SIP for regular monthly savings, lumpsum for any one-time amounts that come your way.
CAGR Calculator
The CAGR Calculator is what lets you compare all your investments on equal footing. CAGR (Compound Annual Growth Rate) strips away the noise of varying tenures and tells you the annualised return of any investment.
Enter your initial investment, final value, and number of years, and it returns the CAGR percentage. This is really the only correct way to compare, say, an FD that doubled in 9 years (CAGR ≈ 8%) with a mutual fund that tripled in 7 years (CAGR ≈ 17%). Use it to audit your existing portfolio, review past investment decisions, and benchmark future expectations against historical data.
How We Evaluated
Every calculator on this list was checked against four criteria:
Formula accuracy. PPF and EPF calculators were verified against the scheme-specific compounding rules published by the Ministry of Finance and EPFO respectively. SIP uses the standard future value of annuity formula. NPS accounts for the 60/40 split at maturity. We didn't include any calculator that leans on simplified approximations where the official scheme rules say otherwise.
No registration required. Every calculation runs entirely in the browser with no account creation, email submission, or paywall.
Free, always. No premium tier, no calculation limit.
Shareable outputs. Each calculator encodes your inputs in the URL, so any scenario you build can be shared with a link, which comes in handy when you're discussing options with a family member or financial adviser.