Free Finance Calculators
Finance calculators help you plan loans, investments, taxes, and savings with accurate, formula-driven results. From EMI and SIP to income tax and gratuity, each calculator is tailored for Indian financial products with clear, step-by-step breakdowns. All calculations run in-browser and no personal data is ever stored.
50 tools available
Most Popular
Calculate monthly EMI, total interest, and full amortization schedule.
Try it free →SIP CalculatorCalculate SIP returns, total value, and wealth ratio for mutual funds.
Try it free →GST CalculatorAdd or remove GST from any amount. Supports all Indian GST slabs with CGST/SGST split.
Try it free →All Finance Calculators (50)
Calculate monthly EMI, total interest, and full amortization schedule.
Open tool →SIP CalculatorCalculate SIP returns, total value, and wealth ratio for mutual funds.
Open tool →GST CalculatorAdd or remove GST from any amount. Supports all Indian GST slabs with CGST/SGST split.
Open tool →Percentage CalculatorFind X% of Y, percentage change, and increase/decrease by percentage.
Open tool →Compound Interest CalculatorCalculate compound interest, final amount, APY, and year-by-year growth.
Open tool →Income Tax CalculatorCalculate India income tax for FY 2025-26 under New or Old Regime with slab breakdown.
Open tool →FD CalculatorCalculate Fixed Deposit maturity amount, interest earned, and effective yield.
Open tool →PPF CalculatorCalculate PPF maturity amount and year-by-year balance at 7.1% with EEE tax benefit.
Open tool →HRA CalculatorCalculate HRA tax exemption for metro and non-metro cities with all three conditions.
Open tool →Bill SplitterSplit restaurant bills equally with tip calculation and per-person amount.
Open tool →Gratuity CalculatorCalculate gratuity as per Payment of Gratuity Act 1972 with eligibility check.
Open tool →Take Home Salary CalculatorCalculate monthly in-hand salary from CTC with PF, tax, and deduction breakdown.
Open tool →CAGR CalculatorCalculate Compound Annual Growth Rate or find future value and years required.
Open tool →ROI CalculatorCalculate Return on Investment percentage and annualised CAGR for any investment.
Open tool →Simple Interest CalculatorCalculate simple interest and total amount using the SI = PRT/100 formula.
Open tool →Discount CalculatorFind discounted price and savings amount. Reverse mode finds original MRP from sale price.
Open tool →Tip CalculatorCalculate tip amount and split the total bill equally among any number of people.
Open tool →Inflation CalculatorCalculate how inflation erodes purchasing power over time with a year-by-year breakdown.
Open tool →NPS CalculatorCalculate NPS corpus, 60% lump sum, and estimated monthly pension at retirement.
Open tool →Net Worth CalculatorCalculate net worth from assets and liabilities with debt-to-asset ratio.
Open tool →Retirement CalculatorCalculate the corpus needed to retire and the monthly savings required to get there.
Open tool →EMI Comparison CalculatorCompare two loans side by side — see which gives lower EMI, total interest, and total repayment.
Open tool →Loan to Value CalculatorCalculate LTV ratio for home loans and property loans. Check RBI limits and find max loan amount or required down payment.
Open tool →Percentage Change CalculatorCalculate percentage change, percentage of a value, find original value from a percentage, and percentage difference.
Open tool →Credit Card Payoff CalculatorCalculate how long to pay off credit card debt and see how much extra monthly payments save in interest.
Open tool →Fuel Cost CalculatorCalculate trip fuel cost from distance, efficiency (km/L, L/100km, MPG), and price. Supports one-way, return, and passenger split.
Open tool →Loan Prepayment CalculatorCalculate interest saved and months reduced by prepaying your home loan. Compare reducing EMI vs reducing tenure.
Open tool →Monthly Budget PlannerPlan monthly income and expenses with 50/30/20 rule analysis, savings rate, and category-wise budget breakdown.
Open tool →GST / Sales Tax CalculatorAdd or remove GST from any price. Supports CGST/SGST breakdown and includes an HSN rate quick-reference for India.
Open tool →Unit Price CalculatorCompare products by unit price to find the best value for money. Supports g, kg, ml, L, oz, lb with automatic unit normalisation.
Open tool →Brokerage CalculatorCalculate stock brokerage, STT, exchange charges, SEBI fees, GST, stamp duty, and net P&L for equity delivery, intraday, and F&O trades.
Open tool →Loan Eligibility CalculatorCalculate maximum loan eligibility for home, personal, car, and education loans based on income, existing EMIs, and FOIR norms.
Open tool →Profit Margin CalculatorCalculate gross profit margin, net profit margin, and markup percentage. Find the revenue needed to hit a target margin.
Open tool →Lumpsum CalculatorCalculate maturity value of a one-time lumpsum investment. See total returns, gain, and wealth ratio over the chosen tenure.
Open tool →SWP CalculatorCalculate Systematic Withdrawal Plan returns. See final balance, total withdrawn, and how long your corpus lasts at a chosen monthly draw.
Open tool →Mutual Fund Returns CalculatorEstimate mutual fund returns for both SIP (monthly) and lumpsum (one-time) modes. See maturity value, total invested, and gain.
Open tool →Sukanya Samriddhi Yojana CalculatorCalculate maturity value of Sukanya Samriddhi Yojana (SSY) for your daughter — 15-year deposit, matures at age 21, currently 8.2% p.a. tax-free.
Open tool →EPF CalculatorEstimate Employee Provident Fund corpus at retirement. Accounts for monthly contributions, annual hikes, and current EPF interest rate.
Open tool →RD CalculatorCalculate maturity amount and interest earned on a Recurring Deposit (RD). Compounded quarterly.
Open tool →Car Loan EMI CalculatorCalculate monthly EMI for a car loan. Pre-set with typical car loan defaults. See total interest and full payable amount.
Open tool →Home Loan EMI CalculatorCalculate home loan EMI, total interest, and principal-to-interest split. Pre-set with typical Indian home loan defaults.
Open tool →NSC CalculatorCalculate maturity value of National Savings Certificate (NSC) — 5-year fixed tenure, government-backed, currently 7.7% p.a.
Open tool →Step Up SIP CalculatorCalculate returns on a SIP that increases by a fixed percentage every year. See how step-up SIPs build dramatically more wealth than flat SIPs.
Open tool →APY CalculatorCalculate monthly contribution required for Atal Pension Yojana (APY). Pick target pension (₹1k–₹5k/month), enter age — get the official PFRDA contribution.
Open tool →Margin CalculatorEstimate margin required for stock trades — equity intraday, delivery, futures, and options. Pre-set typical leverage by segment.
Open tool →TDS CalculatorCalculate TDS on different payment types — salary, FD interest, rent, professional fees, commissions. Includes no-PAN flat 20% rule.
Open tool →Post Office MIS CalculatorCalculate monthly income from Post Office Monthly Income Scheme (POMIS). 7.4% p.a., paid monthly, government-backed.
Open tool →SCSS CalculatorCalculate quarterly payouts and total interest from Senior Citizens Savings Scheme (SCSS). 8.2% p.a., 5-year tenure, government-backed.
Open tool →Stock Average CalculatorCalculate the weighted average buy price of a stock across multiple purchases. See total invested, total quantity, and unrealized P&L.
Open tool →XIRR CalculatorCalculate XIRR — the annualized return on investments with irregular cash flows. Used by mutual fund investors, SIP returns, real estate, and angel investments.
Open tool →Frequently Asked Questions
- Are these finance calculators free?
- Yes. All finance calculators on Stax are completely free with no sign-up, no usage limits, and no premium tier.
- Are the results accurate?
- Yes. Each calculator uses standard financial formulas — flat-rate EMI, IS Act provisions for gratuity, Mifflin-St Jeor for TDEE, and so on. Results are for informational planning purposes; consult a financial advisor for major decisions.
- Are these calculators specific to India?
- Most finance calculators are tailored for Indian users — covering GST, PPF, NPS, HRA, income tax slabs for FY 2025-26, EPF, SCSS, SSY, and more. General calculators like EMI and compound interest work globally.
- Is my financial data stored?
- No. All calculations happen in your browser. Stax does not store or transmit any of your financial inputs or results.
- Which investment calculators are available?
- Stax includes SIP, lumpsum, step-up SIP, mutual fund returns, PPF, EPF, NPS, SSY, NSC, SCSS, FD, RD, and APY calculators, plus an XIRR calculator for irregular cash flows.