Stax

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

All Finance Calculators (50)

EMI Calculator

Calculate monthly EMI, total interest, and full amortization schedule.

Open tool →
SIP Calculator

Calculate SIP returns, total value, and wealth ratio for mutual funds.

Open tool →
GST Calculator

Add or remove GST from any amount. Supports all Indian GST slabs with CGST/SGST split.

Open tool →
Percentage Calculator

Find X% of Y, percentage change, and increase/decrease by percentage.

Open tool →
Compound Interest Calculator

Calculate compound interest, final amount, APY, and year-by-year growth.

Open tool →
Income Tax Calculator

Calculate India income tax for FY 2025-26 under New or Old Regime with slab breakdown.

Open tool →
FD Calculator

Calculate Fixed Deposit maturity amount, interest earned, and effective yield.

Open tool →
PPF Calculator

Calculate PPF maturity amount and year-by-year balance at 7.1% with EEE tax benefit.

Open tool →
HRA Calculator

Calculate HRA tax exemption for metro and non-metro cities with all three conditions.

Open tool →
Bill Splitter

Split restaurant bills equally with tip calculation and per-person amount.

Open tool →
Gratuity Calculator

Calculate gratuity as per Payment of Gratuity Act 1972 with eligibility check.

Open tool →
Take Home Salary Calculator

Calculate monthly in-hand salary from CTC with PF, tax, and deduction breakdown.

Open tool →
CAGR Calculator

Calculate Compound Annual Growth Rate or find future value and years required.

Open tool →
ROI Calculator

Calculate Return on Investment percentage and annualised CAGR for any investment.

Open tool →
Simple Interest Calculator

Calculate simple interest and total amount using the SI = PRT/100 formula.

Open tool →
Discount Calculator

Find discounted price and savings amount. Reverse mode finds original MRP from sale price.

Open tool →
Tip Calculator

Calculate tip amount and split the total bill equally among any number of people.

Open tool →
Inflation Calculator

Calculate how inflation erodes purchasing power over time with a year-by-year breakdown.

Open tool →
NPS Calculator

Calculate NPS corpus, 60% lump sum, and estimated monthly pension at retirement.

Open tool →
Net Worth Calculator

Calculate net worth from assets and liabilities with debt-to-asset ratio.

Open tool →
Retirement Calculator

Calculate the corpus needed to retire and the monthly savings required to get there.

Open tool →
EMI Comparison Calculator

Compare two loans side by side — see which gives lower EMI, total interest, and total repayment.

Open tool →
Loan to Value Calculator

Calculate LTV ratio for home loans and property loans. Check RBI limits and find max loan amount or required down payment.

Open tool →
Percentage Change Calculator

Calculate percentage change, percentage of a value, find original value from a percentage, and percentage difference.

Open tool →
Credit Card Payoff Calculator

Calculate how long to pay off credit card debt and see how much extra monthly payments save in interest.

Open tool →
Fuel Cost Calculator

Calculate trip fuel cost from distance, efficiency (km/L, L/100km, MPG), and price. Supports one-way, return, and passenger split.

Open tool →
Loan Prepayment Calculator

Calculate interest saved and months reduced by prepaying your home loan. Compare reducing EMI vs reducing tenure.

Open tool →
Monthly Budget Planner

Plan monthly income and expenses with 50/30/20 rule analysis, savings rate, and category-wise budget breakdown.

Open tool →
GST / Sales Tax Calculator

Add or remove GST from any price. Supports CGST/SGST breakdown and includes an HSN rate quick-reference for India.

Open tool →
Unit Price Calculator

Compare 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 Calculator

Calculate 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 Calculator

Calculate maximum loan eligibility for home, personal, car, and education loans based on income, existing EMIs, and FOIR norms.

Open tool →
Profit Margin Calculator

Calculate gross profit margin, net profit margin, and markup percentage. Find the revenue needed to hit a target margin.

Open tool →
Lumpsum Calculator

Calculate maturity value of a one-time lumpsum investment. See total returns, gain, and wealth ratio over the chosen tenure.

Open tool →
SWP Calculator

Calculate 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 Calculator

Estimate mutual fund returns for both SIP (monthly) and lumpsum (one-time) modes. See maturity value, total invested, and gain.

Open tool →
Sukanya Samriddhi Yojana Calculator

Calculate 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 Calculator

Estimate Employee Provident Fund corpus at retirement. Accounts for monthly contributions, annual hikes, and current EPF interest rate.

Open tool →
RD Calculator

Calculate maturity amount and interest earned on a Recurring Deposit (RD). Compounded quarterly.

Open tool →
Car Loan EMI Calculator

Calculate 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 Calculator

Calculate home loan EMI, total interest, and principal-to-interest split. Pre-set with typical Indian home loan defaults.

Open tool →
NSC Calculator

Calculate maturity value of National Savings Certificate (NSC) — 5-year fixed tenure, government-backed, currently 7.7% p.a.

Open tool →
Step Up SIP Calculator

Calculate 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 Calculator

Calculate monthly contribution required for Atal Pension Yojana (APY). Pick target pension (₹1k–₹5k/month), enter age — get the official PFRDA contribution.

Open tool →
Margin Calculator

Estimate margin required for stock trades — equity intraday, delivery, futures, and options. Pre-set typical leverage by segment.

Open tool →
TDS Calculator

Calculate TDS on different payment types — salary, FD interest, rent, professional fees, commissions. Includes no-PAN flat 20% rule.

Open tool →
Post Office MIS Calculator

Calculate monthly income from Post Office Monthly Income Scheme (POMIS). 7.4% p.a., paid monthly, government-backed.

Open tool →
SCSS Calculator

Calculate quarterly payouts and total interest from Senior Citizens Savings Scheme (SCSS). 8.2% p.a., 5-year tenure, government-backed.

Open tool →
Stock Average Calculator

Calculate the weighted average buy price of a stock across multiple purchases. See total invested, total quantity, and unrealized P&L.

Open tool →
XIRR Calculator

Calculate 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.