India Tax Calculators and Guides
7 calculators · 12 guides
This hub covers Indian direct and indirect tax: every Calcumetrics tax calculator and the guides that explain the rules behind it. From tax year 2026-27 income tax is governed by the Income-tax Act, 2025, while returns for FY 2025-26 still follow the Income-tax Act, 1961. Each calculator states which year and which law it applies at the top of the page.
Salaried taxpayers can start with the income tax calculator to compare the default new regime with the old regime, then use the salary CTC calculator to see take-home pay and the HRA calculator to work out the exempt part of house rent allowance. Freelancers, investors and business owners will use the advance tax, TDS and capital gains calculators, and anyone pricing goods or services can add or remove GST at any slab.
The guides go deeper: old versus new regime break-even points, the section 87A rebate and marginal relief, advance tax due dates with worked examples, TDS versus advance tax, capital gains on shares and IPOs, GST input tax credit, and a section-by-section guide to the new Act for salaried people. It is written for employees, students of B.Com and CA, and small business owners. Results are estimates for planning, not filing advice.
Income tax and salary
Income Tax Calculator
Compare New Tax Regime (FY 2025-26 & 2026-27) vs Old Regime, Section 87A zero tax up to ₹12.75L, and marginal relief.
INSalary / CTC Calculator
Break down salary and CTC components for an India employment package.
INHRA Calculator
Calculate House Rent Allowance tax exemption under India's Income Tax rules.
Guides
- Old vs. New Tax Regime: The Exact Breakeven Deduction Formula (FY 2025-26)Breakeven deduction guide between Old and New Tax Regime for FY 2025-26, including the ₹75,000 standard deduction and salary-by-salary deduction thresholds.
- Section 87A Marginal Relief: New Regime Solved ExampleSection 87A marginal relief calculation with example for the new tax regime, FY 2025-26: formula, two solved numericals and the ₹12 lakh limit.
- Income-tax Act 2025: A Salaried Employee’s Guide from April 2026Understand tax year 2026–27, ten old-to-new section mappings, salary TDS and what stayed unchanged in slabs, standard deduction and rebate.
- CTC vs. In-Hand Salary in India: The Real Math Behind Your Offer LetterLearn the exact mathematical breakdown between Cost to Company (CTC) and net take-home salary in India, including EPF, gratuity, and income tax.
- HRA Exemption: Least of Three Limits Solved NumericalHRA exemption calculation formula with the least of three limits under Rule 2A: two solved numericals, metro and non-metro, with taxable HRA worked out.
- ITR due date 21 Nov 2026: audit-case late fee and interestITR due date is 21 November 2026 for specified audit cases. Check the CBDT extension, section 234F fees and an engine-calculated 234A interest example.
Advance tax and TDS
Advance Tax Calculator
Estimate advance income-tax instalments under applicable Indian tax rules.
INTDS Calculator
Calculate tax deducted at source for supported India income and payment scenarios.
Guides
- Advance Tax in India: The Quarterly Calendar and How to Avoid Section 234B & 234C Penal InterestQuarterly advance tax calendar for taxpayers and businesses. Section 208 thresholds, 234B & 234C penal interest rules, and windfall safe harbors.
- Advance Tax Due Dates FY 2026-27: Solved ExampleAdvance tax for FY 2026-27 under the Income-tax Act, 2025: 15%, 45%, 75% and 100% due dates and section 425 interest (old 234C) worked out.
- TDS vs. Advance Tax vs. Self-Assessment Tax: Why TDS Deductions Might Not Save You From Penal InterestUnderstand the critical statutory differences between TDS, Advance Tax, and Self-Assessment Tax in India, and how to avoid Section 234B & 234C interest.
Capital gains
Guides
- Capital Gains Tax in India: Rates, Holding Periods, and the Real Estate Indexation RuleIndia capital gains tax guide: 12.5% LTCG rate, 20% STCG, ₹1.25 Lakh annual exemption, and the dual-option real estate indexation rule explained.
- Jio Platforms IPO: Listing Gains Tax and One-Lot ExamplesCheck Jio IPO dates, price band and lot size, then calculate listing gains tax, cess and the difference between short-term and long-term gains.
GST
How to choose a tax calculator
Begin with the income tax calculator to compare the old and new regimes on your actual income and deductions. If you are salaried, the salary CTC calculator shows what reaches your bank account each month after EPF and tax, and the HRA calculator shows how much rent allowance is exempt, which only matters if you stay in the old regime.
If you sell shares, mutual funds or property, use the capital gains tax calculator, since short-term and long-term gains are taxed differently. When your tax for the year after TDS is ₹10,000 or more, the advance tax calculator splits it across the four instalment dates. The TDS calculator shows the tax deducted at source on payments such as rent, commission or professional fees, and the GST calculator adds or removes GST from a price at any slab.
To check a supplier’s bill, use the GST calculator for inclusive prices and CGST/SGST/IGST splits. Confirm the invoice rate and place of supply before applying the calculation.