How beMyCalc builds, tests, and documents all 123 calculators — formulas, data sources, and assumptions.
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When you move a slider or type an amount, the math runs locally in your browser. We do not send loan balances, salaries, or investment amounts to our servers. Share links encode your inputs in the URL so you can bookmark or send a scenario — treat shared URLs like any link that contains personal numbers.
Most tools use widely published financial math: reducing-balance EMI amortization, compound interest, SIP future value, CAGR, present/future value, and similar textbook formulas. Below you'll find every calculator with its formula and a link to the live tool. Each calculator page also has a "How we calculate" panel with the same equation.
India income tax, HRA, and regime-compare tools use slab rates and deductions documented for FY 2024-25 (AY 2025-26). PPF, NPS, SSY, NSC, and similar scheme calculators let you enter the notified interest rate — we do not hard-code a single live government rate unless the tool explicitly states one as a default example.
Scheme limits (80C cap, PPF yearly maximum, etc.) follow commonly cited rules at the time of the last review. Indian rules change in Union Budgets and notifications — always confirm with the Income Tax portal, EPFO, or your chartered accountant before filing or investing.
The currency converter fetches indicative mid-market rates from the Frankfurter API (European Central Bank reference data), cached for about an hour. Banks and card networks apply their own spreads and fees — use the exchange calculator to model fees separately.
Calculator pages show sample scenarios (e.g. ₹10L loan at 8.5% for 20 years). These are illustrations to explain the tool, not recommendations. Guides on /guides link to calculators so you can replace example numbers with your own.
Found a wrong formula, outdated slab, or broken share link? Use our contact form with the calculator URL and your expected result.
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8 tools in Tax — showing 1–8
GST amount = Base price × GST rate / 100; Total = Base + GST (or reverse: Base = Total / (1 + rate/100))
Select exclusive (tax added on top) or inclusive (tax included in price) mode, enter amount and GST rate to get base amount, GST, and total.
Open calculator →Deduction = min(interest paid, ₹2L Section 24b cap) + min(principal repaid, ₹1.5L Section 80C cap)
Enter annual home loan interest and principal repaid. Section 24(b) allows up to ₹2 lakh interest deduction for self-occupied property. Principal counts under Section 80C (₹1.5L cap shared with PPF, ELSS, etc.).
Open calculator →Exempt HRA = minimum of (HRA received, Rent paid − 10% of Basic, 50%/40% of Basic for metro/non-metro)
Exempt HRA is the minimum of: (1) actual HRA received, (2) rent paid minus 10% of basic, (3) 50% of basic for metro or 40% for non-metro. Applicable under old tax regime only.
Open calculator →Tax = progressive slab tax on taxable income − rebates + surcharges; taxable income = gross − deductions
Enter annual income and deductions. Choose flat tax rate or progressive brackets to estimate total tax, effective rate, and monthly net income.
Open calculator →Tax = slab-wise tax − Section 87A rebate + 4% cess; old vs new regime use different slabs and deductions
Enter gross annual salary and deductions available under the old regime. We apply FY 2024-25 slabs, standard deduction (₹50k old / ₹75k new), Section 87A rebate, and 4% cess to show which regime leaves more in your pocket.
Open calculator →Sales tax = Price × tax rate / 100; Total = Price + Sales tax
Enter product price, sales tax rate, and choose whether the price is before or after tax to get the tax amount and final price.
Open calculator →TDS = gross amount × TDS rate / 100; net amount = gross − TDS
Enter gross payment amount and TDS rate (%). TDS = gross × rate / 100; net amount = gross − TDS. Use the rate applicable to your payment section (194A, 194C, etc.).
Open calculator →VAT = Net price × VAT rate / 100; Gross price = Net + VAT
Enter the amount, VAT rate, and whether the price is VAT-exclusive or VAT-inclusive to calculate net price, VAT amount, and total.
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