Summary: The article introduces an offline HTML-based income tax computation tool designed for FY 2025-26 (AY 2026-27) to help taxpayers compare tax liability under the old and new tax regimes. The tool allows users to input salary, house property income, capital gains, presumptive business income, and other sources of income, automatically computing tax under both regimes while identifying the applicable ITR form (ITR-1 to ITR-4). It also supports NRI taxation with DTAA relief, incorporates updated capital gains provisions, including the 12.5% tax rate and property indexation rules, and generates a printable computation report. Users can import the Income Tax Department’s prefill JSON to auto-populate income and TDS details, reducing manual data entry. Since the application runs entirely offline, all data remains stored locally on the user’s computer without transmission to any server. The article advises users to verify computations and seek professional advice for complex tax matters.
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Free Income Tax Return Preparation Tool for FY 2025-26 (AY 2026-27) – No Installation, No Sign-Up, No Data Upload
Every July, same story. Someone in the family asks me “old regime or new regime, which one should I pick this year?” and I end up doing mental math with half-remembered slab rates, get it slightly wrong, and then have to redo it properly in a spreadsheet anyway. After doing this for the third year in a row, I just built the thing properly instead.
So here it is a tax computation tool for FY 2025-26 (AY 2026-27). It’s one HTML file. You download it, double-click it, and it opens in your browser. No installing anything, no account, no “please sign up to continue.”
Key Features of the Income Tax Preparation Tool
You put in your salary, house property, capital gains, whatever presumptive business income you’ve got, other sources the usual stuff and it works out your tax under both the old and new regime side by side, so you can actually see which one wins instead of guessing. It also figures out which ITR form you need (ITR-1 through ITR-4), handles NRI cases with DTAA relief, and gives you a proper computation report you can print or save as a PDF.
It also picked up the newer capital gains rules from last year’s Budget the 12.5% rate, the property indexation option if you bought before July 2024, all of that.
One thing I’m genuinely happy with: if you’ve already downloaded your prefill JSON from the e-filing portal, you can just import that file directly and it pulls in your salary, TDS, and other income automatically. Saves you retyping everything.
Private and Offline Tax Calculation: No Data Upload Required
I want to be upfront about this because it’s a tax tool and people are (rightly) cautious about typing their PAN and salary into random websites. There’s no backend here. There’s no server. Everything you enter just sits in your browser’s local storage. You could turn your wifi off and it’d work exactly the same. If you want to move your data to another computer or back it up, there’s an export/import button for that, but that’s you doing it manually, not the tool phoning home.
How to Use the Free Income Tax Tool
Download the file, double-click it, hit “+ New Client” (or “Import JSON” if you’ve got that prefill file), fill in your numbers across the tabs, and check the Computation tab at the end for your final figures.
Important Disclaimer Before Using the Tax Computation Tool
This helps you work out your numbers and get organized it doesn’t file anything for you, and it’s not a government-certified utility. Please actually check the figures before you rely on them, and if your situation’s complicated, get a CA to look at it. Also tax rules change every Budget, so make sure whatever copy of this you’re using is actually built for the year you’re filing.
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