RubanTools

Financial Calculators

45 free tools for loans, investments, tax, insurance, government schemes and property - no sign-up, all Indian-focused.

EMI Calculator

Calculate monthly EMI, total interest and full amortisation schedule for any loan with reducing-balance formula.

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Home Loan Calculator

Compute home loan EMI with down payment, processing fee and prepayment simulation - see how much interest you save.

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Car Loan Calculator

Calculate car or two-wheeler loan EMI with typical rates for new, used and commercial vehicles.

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Personal Loan Calculator

Estimate personal loan EMI, total cost, APR including processing fee + GST, and rate comparison.

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SIP Calculator

Calculate SIP returns with step-up option and goal planner - find the monthly SIP needed for any financial target.

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Lumpsum Calculator

Compute the future value of a one-time investment with inflation-adjusted real value and rate comparison.

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Mutual Fund Calculator

Model SIP + lumpsum mutual fund returns across equity, debt and hybrid categories with CAGR comparison table.

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RD Calculator

Calculate Recurring Deposit maturity with quarterly compounding and senior citizen bonus - for bank and post office RDs.

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FD Calculator

Fixed Deposit maturity calculator with monthly, quarterly, half-yearly or annual compounding and EAY comparison.

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PPF Calculator

Public Provident Fund maturity with year-by-year balance, partial withdrawal and loan eligibility at 7.1% rate.

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NPS Calculator

National Pension System corpus, lump-sum and monthly pension estimate with annuity purchase options.

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GST Calculator

Add or remove GST for all slabs (5%, 12%, 18%, 28%) with CGST/SGST/IGST breakdown for intra and inter-state.

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Income Tax Calculator

Compare old vs new income tax regime for FY 2024-25 with 80C, HRA, home loan and NPS deductions.

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HRA Calculator

Calculate House Rent Allowance exemption under Sec 10(13A) - minimum of the 3 statutory conditions for metro and non-metro.

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TDS Calculator

Calculate TDS for salary, FD interest, rent, professional fees and contractors with section-wise rates.

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Gratuity Calculator

Compute gratuity payable under Payment of Gratuity Act with tax-exempt limit breakdown for all employee categories.

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Capital Gains Calculator

LTCG and STCG tax on equity, debt, gold and property with indexation benefit - FY 2024-25 Budget-updated rates.

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Retirement Calculator

Find the corpus and monthly SIP needed to retire comfortably - accounting for inflation and existing savings.

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Inflation Calculator

See how inflation erodes purchasing power over time - future cost of today's money and year-by-year impact.

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Compound Interest Calculator

A = P(1+r/n)^nt - compute compound interest with any compounding frequency and optional monthly deposits.

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Simple Interest Calculator

SI = PRT/100 - solve for interest, principal, rate or time and compare with compound interest growth.

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CAGR Calculator

Calculate Compound Annual Growth Rate from any start/end value or find future value or years needed at a target CAGR.

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Salary Calculator

Convert CTC to monthly in-hand pay with Basic, HRA, PF, professional tax, TDS - old and new regime comparison.

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EPF Calculator

Employee Provident Fund maturity with year-by-year growth, employer match and 8.25% current interest rate.

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Stamp Duty Calculator

Calculate property stamp duty and registration charges for 14 major Indian states with female buyer concessions.

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Profit Margin Calculator

Find gross profit, margin % and markup from cost and selling price - or calculate the selling price from a target margin.

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GST Invoice Generator

Create professional GST invoices with CGST/SGST or IGST breakdown. Add items, fill seller/buyer details and print or save as PDF.

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Fuel Cost Calculator

Calculate trip fuel cost for petrol, diesel and CNG - enter distance, mileage (km/l) and fuel price for instant per-km and total cost.

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Step-Up SIP Calculator

SIP calculator with annual increment - model how increasing your SIP by 10% each year grows your wealth vs a flat SIP over the same period.

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Home Loan Affordability

Find the maximum home loan you can get from your monthly salary using the FOIR method - instantly see property value you can afford.

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SWP Calculator

Systematic Withdrawal Plan - enter corpus, monthly withdrawal and return rate to see how long your investment lasts and the optimal withdrawal amount.

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Loan Prepayment Calculator

See exactly how much interest you save and how many months you cut by making a lump-sum prepayment on your home or personal loan.

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NSC Calculator

National Savings Certificate maturity value at 7.7% with year-by-year interest accrual and Section 80C tax-deductible breakdown.

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KVP Calculator

Kisan Vikas Patra doubling period and maturity value at the current 7.5% rate - with year-by-year growth table.

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SSY Calculator

Sukanya Samriddhi Yojana maturity corpus at 8.2% - enter annual deposit and daughter's age for full year-by-year table up to maturity at age 21.

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Property ROI Calculator

Calculate rental yield, annual ROI, capital gains and break-even years for any property investment - enter purchase price, rent and appreciation rate.

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Vehicle RC Cost Calculator

Estimate on-road registration cost for your vehicle - state-wise road tax table covering all 28 states and UTs for cars, bikes and EVs.

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Electricity Bill Calculator

Slab-wise electricity bill estimator for 20+ states - enter meter units to see DISCOM rate breakdown and average cost per unit.

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Rent vs Buy Calculator

Compare total cost of renting vs buying a home over 10–30 years - EMI, down payment opportunity cost, appreciation, and the break-even year.

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Property Valuation Estimator

Get an indicative price range for residential property - based on city tier, locality type, property type, area, age and floor level.

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P&L Statement Generator

Build a printable profit & loss statement - add revenue and expense lines to instantly see gross profit, EBIT and net margin. For freelancers and SMEs.

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Toll Calculator

Estimate NHAI highway toll charges for 20+ major city-to-city routes - cars, SUVs and trucks. FASTag vs cash comparison included.

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Gold Loan Calculator

Calculate eligible gold loan amount by weight, purity (18K/22K/24K) and LTV% - current gold rate pre-filled. EMI and total interest included.

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Vehicle Insurance Calculator

Estimate annual car or bike insurance premium - OD + TP breakdown using IRDAI rates, IDV, NCB discount, and add-on coverage options.

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ULIP Calculator

Calculate ULIP fund value after charges and compare it with Buy Term + Invest in MF to see which builds more wealth over 10–30 years.

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Financial Calculators - Free Finance Tools for India

Financial calculators translate complex mathematical formulas into instant, accurate results that help individuals and businesses make informed money decisions. Whether you are computing the EMI on a home loan, projecting the maturity value of a SIP investment, or determining your GST liability, these tools eliminate manual calculation errors and save significant time. India's financial planning landscape has transformed rapidly since the introduction of GST in July 2017, SEBI's mutual fund reforms in 2018, and the New Tax Regime introduced in Budget 2020.

Why Indians Need Dedicated Finance Tools

India's personal finance environment is uniquely complex: taxpayers must choose between the Old and New Tax Regimes, HRA exemption rules differ by city tier, EPF and NPS have distinct contribution and tax rules, and GST rates span five slabs (0%, 5%, 12%, 18%, 28%). Exam syllabi for CA Foundation, UPSC Economics optional, CMA, and MBA Finance entrance tests (CAT, XAT) include financial mathematics. With over 150 million mutual fund folios and 90 million+ active demat accounts as of 2024 (SEBI data), millions of retail investors need accessible calculation tools every day.

What This Hub Covers

This collection includes 45 calculators spanning loans (EMI, home loan, personal loan), investments (SIP, FD, RD, PPF, NPS, NSC, KVP, SSY), taxes (GST, income tax, HRA), salary tools, and real estate (rent vs buy, property ROI). All calculators follow current Indian tax laws and RBI-regulated rate conventions. Results are for informational purposes and should be validated with a SEBI-registered financial advisor for major decisions.

Financial Calculators FAQ

The EMI calculator is the most searched financial tool in India. It uses the reducing-balance formula EMI = P×r×(1+r)^n / ((1+r)^n−1), where P is the principal, r is the monthly interest rate and n is the number of months. Our EMI calculator shows the full amortisation schedule so you can see exactly how much of each payment goes towards interest versus principal - critical when comparing home loan, car loan and personal loan offers from different banks.

Enter your monthly SIP amount, expected annual rate of return and investment duration in years. The SIP calculator compounds monthly and shows the total invested amount, estimated returns and maturity value. Our tool also includes a step-up SIP option, where you increase your SIP by a fixed percentage each year, which can dramatically boost your corpus over the long term. There is also a goal planner mode - enter your target corpus and it tells you the monthly SIP required to reach it.

Under the new tax regime for FY 2024-25, the slabs are: income up to ₹3 lakh - nil; ₹3–7 lakh - 5%; ₹7–10 lakh - 10%; ₹10–12 lakh - 15%; ₹12–15 lakh - 20%; above ₹15 lakh - 30%. A standard deduction of ₹75,000 applies for salaried individuals. The new regime does not allow most deductions (80C, HRA, home loan interest) but has lower slab rates. Our income tax calculator compares both old and new regime tax liabilities side by side so you can choose whichever regime saves you more.

An FD (Fixed Deposit) calculator works on a lump-sum investment: you deposit a single amount once and it grows with compounding (monthly, quarterly, half-yearly or annually) using the formula A = P(1 + r/n)^nt. An RD (Recurring Deposit) calculator handles monthly deposits: you invest a fixed amount every month and interest is compounded quarterly on the accumulated balance. RDs are ideal for salaried individuals who want to save a portion of income each month, while FDs suit those with a lump sum to park safely.