Tax Calculators & Guides Every income tax calculator and guide on CalcGuru, grouped by what you are trying to work out – the tax itself, the deductions, capital gains, gifts, advance tax, or which form to file. All free, all in the browser, and all stating the year they compute for. Income Tax Calculators Work out the liability, and which regime produces it. Income Tax Calculator (Salaried) Old regime against new for a salaried taxpayer, with the standard deduction and the rebate applied. Income Tax Calculator (All Heads) All five heads including business and profession, with residency and marginal relief. Slab Rates FY 2026-27 Both regimes side by side, with surcharge, cess and the rebate threshold. Section 87A Rebate The rebate and the marginal relief that softens the cliff just above the threshold. Concessional Regime Advisor For companies and co-operative societies – which concessional regime is actually cheaper. Foreign Tax Credit Relief for tax already paid abroad, under the treaty or under Section 91. Advance Tax Calculator The instalment due at each date, worked from estimated income for the year. Deductions & Exemptions What comes off before the tax is computed – and what the new regime disallows. Section 80C Optimiser Fills the Rs 1.5 lakh limit from what you already pay before suggesting anything new. Section 80D Health Insurance Premium, preventive check-up and the higher limit for senior citizens. Deduction for treatment of specified diseases, and the certificate needed. Section 80TTA & 80TTB Interest deduction on savings and deposits, and why the two sections rarely both apply. LTA / LTC Exemption The block-year rule, what travel qualifies, and the proof an employer will ask for. Capital Gains Exemption Sections 54, 54F and 54EC – how much of the gain can be sheltered and by when. All Deductions and Exemptions The full list with limits, and which survive under the new regime. Capital Gains & Property Sale of property, shares and other assets. Capital Gains Tax Calculator Short and long term across asset classes, with the set-off and the exemption options. Capital Gains on Property The full computation on a property sale – cost, improvement, indexation and the reinvestment routes. House Property Income Let-out and self-occupied, the 30 per cent deduction and the interest set-off limit. Cost Inflation Index The full CII table with the index for the current year. Gifts & Family Transfers When a gift is taxable, in whose hands, and at what value. Gift Tax Calculator Enter the gift and the relationship, and see whether it is taxable and to whom. Cash and Money Gifts The aggregate threshold, and the separate cash-receipt restriction that catches people out. Valuation, the cost carried over to the donee, and the position on later sale.

Gift of Immovable Property Stamp duty value as the measure, and when a registered deed is unavoidable. Gifts on Marriage Exempt without limit and from anyone – but only for the couple, and only on the occasion. Clubbing of Income Why a gift to a spouse or minor child does not move the income for tax purposes. Ancestral and HUF Property Gifts to and from an HUF, and the clubbing position on partition. When a Registered Deed Is Required Which gifts need registration to be valid at all. Who Is a “Relative”? The definition that decides whether a gift is exempt – wider than most people assume. Meal Coupons and Gift Cards The employer-provided position, and the per-meal limit that still stands. Advance Tax & Interest Instalments, and what interest applies when they are short. 234A / 234B / 234C Interest All three interest charges plus the 234F late fee, computed from the actual dates. How the Interest Works What each section charges, on what, and for how long – with worked examples. Due Dates and Instalments The four dates and the cumulative percentage due at each. How to Pay Advance Tax The e-Pay Tax route step by step, and the challan details to keep. Returns, Forms & Filing Which form, by when, and what to reconcile before you file. Form 16 and 16A The TDS certificates, what to check on them, and the new form numbers alongside the old. The investment declaration an employer needs, and the proof that must back it. Form 26AS, AIS and TIS What each shows, how they differ, and how to respond when AIS disagrees with your records. Documents for ITR Filing The full checklist by income type, so nothing is missing on the day. Which date applies to you, and what changes if a tax audit is involved. ITR-3 or ITR-4? The presumptive question that decides it, and when ITR-4 is not available. What you lose by filing late – losses, some deductions, and the late fee. The window to correct a filed return, and how it differs from an updated return. Pay Self-Assessment Tax The e-Pay Tax steps, and why the challan must be paid before the return is submitted. Income Tax Forms Guide Which form does what, across deductions, TDS and the return itself. Which Act Applies? The 2025 Act from 1 April 2026, the 1961 Act before it – and which governs the year you are filing. Section Mapping 1961 to 2025 The old section number against the new one, so an older reference still resolves. Old form numbers against the renumbered ones under the 2025 Act. Entity tax, Excel versions and the specialist tools. Frequently asked questions Prefer a working file? Download the Excel versions → or browse all calculators →