Income Tax Calculator Online — Free & Private
Estimate India income tax under the old and new regimes, side by side. Free, private, and processed entirely in your browser — no upload, no account, no file ever leaves your device.
How to use Income Tax Calculator
Estimate India income tax under the old and new regimes, side by side. Everything runs in this tab — nothing is uploaded for the core job.
- Enter your content — Type or paste what you want to work with — Income Tax Calculator runs immediately in your browser.
- Choose your options — Set any options Income Tax Calculator offers.
- Get your result — Copy or download the result \u{2014} done entirely on your device, nothing uploaded.
Privacy proof for Income Tax Calculator
This tool processes files in your browser. Open DevTools → Network while you run it: your document is not uploaded. After one online visit, many tools keep working with Airplane Mode on (libraries cached locally).
Popular tools
The highest-demand tools with full options — browse by category below for the rest.
Star any tool — it appears under Favorites on this device.
How this actually works
Each tool runs entirely with JavaScript already loaded in this page — PDF tools via pdf-lib and pdf.js, image tools via the browser's native Canvas API, and everything else with plain JavaScript. Your files or input are read into browser memory, processed, and handed back as a download or copyable result. This page itself is served by a small Laravel route; Laravel never sees your files either. The only backend in use is Supabase, and only for two optional things: signing in with a magic link, and — only if you're signed in — a log of which tool you ran and when. Honest limits worth knowing: Compress PDF flattens each page to a re-encoded image (great for scans, not ideal if you need selectable text after); HEIC conversion uses a small on-demand converter when the browser cannot decode HEIC natively (Safari often works without it); Fill PDF Form is best-effort for simple AcroForm fields, not a full Adobe Forms replacement; and Word/Excel/PowerPoint ⇄ PDF genuinely needs a server-side engine, so it isn't included — this build only ships tools that can honestly run client-side.
Questions people actually ask
Which tax year do these slabs apply to?
FY 2025-26 / FY 2026-27 (AY 2026-27 / AY 2027-28), as set in Union Budget 2025 and left unchanged in Budget 2026.
What's the difference between the old and new regime?
The new regime has lower tax rates but disallows most deductions and exemptions (like 80C or HRA). The old regime has higher rates but lets those deductions reduce your taxable income first.
Which deductions does this calculator apply?
The old-regime side accounts for Section 80C (up to ₹1.5 lakh), Section 80D health insurance, HRA exemption, and the standard deduction. The new-regime side only applies the standard deduction, since that's essentially the only one it allows.
Does this include the surcharge for high incomes?
No — surcharge on incomes above ₹50 lakh involves marginal-relief rules that go beyond what a simple calculator can responsibly estimate; consult a tax professional for planning above that threshold.
Does it apply the Section 87A rebate?
Yes — both regimes' rebate thresholds and amounts are applied automatically based on the taxable income you enter.
Is this official tax advice?
No — it's a convenience estimate for comparing regimes. Use a chartered accountant or the official income tax e-filing portal when actually filing a return.
Does it tell me which regime is better for me?
Yes — both totals are shown side by side, so you can see directly which regime results in less tax for your numbers.
Is my income information sent anywhere?
No — the calculation happens entirely in your browser as you type; nothing is transmitted.
Is this really free, and is there a file size limit?
Yes — no account, no paywall. Since processing happens in your browser's memory rather than uploading anywhere, the practical limit is your device's available RAM, not a server quota. Very large files (500+ pages) may run slower, especially for Compress and PDF→JPG.
Does anything about my file get sent anywhere?
No. Every tool runs with pdf-lib/pdf.js loaded in this page; your file is read into browser memory and never leaves it. The only network call this app makes for your account is Supabase auth — and that only stores which tool you ran and when, never file content.
Why isn't Word/Excel/PowerPoint → PDF included?
Converting Office formats accurately needs a real rendering engine (what Word or LibreOffice use internally) — no browser library does this reliably. Rather than ship a broken version, it's left out.
Does TechDriven Tools have OCR (text recognition)?
Yes — OCR PDF recognizes text in scanned or photographed pages using Tesseract.js, running entirely on your device, and gives you a searchable PDF or a plain text file. Nothing is uploaded for this either.
Can I use this without an internet connection?
Once the page and its libraries have loaded once, yes — the tools themselves need no network access. Signing in and viewing history do require a connection, since those talk to Supabase.
What happens to the "history" if I sign in?
Only a row per tool run — the tool's name and a timestamp. No filename, no file content, ever. You can see the full list any time via the History button.
Are the non-PDF utilities (password generator, JSON formatter, etc.) private too?
Yes — same rule as the PDF tools. Word Counter, Case Converter, Password Generator, UUID Generator, Base64, Hash Generator, JSON Formatter and JWT Decoder all run with plain JavaScript already loaded in this page; nothing you type or paste is sent anywhere.
Income Tax Calculator, in depth
Estimate India income tax under the old and new regimes, side by side, using current FY 2025-26 slabs.
Features
Side-by-Side Comparison
See both regimes' tax at once, not one at a time.
Section 87A Rebate
Applied automatically based on your taxable income.
Deduction Fields
80C, 80D, HRA, and standard deduction, applied where each regime allows.
Live Calculation
Updates instantly as you adjust any input.
Why use Income Tax Calculator
- Decide which regime is better for your numbers before filing.
- Estimate tax liability for financial planning during the year.
- Check how a specific deduction affects your tax under the old regime.
- Understand the practical difference between the two regimes with real numbers.
How it works
The new regime applies lower slab rates but disallows most deductions; the old regime applies higher rates but allows 80C, 80D, HRA, and the standard deduction to reduce taxable income first. Both regimes' Section 87A rebate and the 4% health & education cess are applied automatically based on the taxable income you enter.
What this doesn't include
Surcharge on incomes above ₹50 lakh involves marginal-relief rules beyond what a simple calculator can responsibly estimate — that's intentionally excluded here rather than approximated. This is a convenience estimate for comparing regimes, not official tax advice; use a chartered accountant or the official e-filing portal when actually filing.
Why people search for Income Tax Calculator
Estimate India income tax under the old and new regimes, side by side. Searchers looking for “Income Tax Calculator free” or “Income Tax Calculator no upload” usually want speed plus privacy — that is exactly the TechDriven Tools model.
Income Tax Calculator sits in our Finance group. The page is built so you can finish the job without creating an account, installing a desktop pack, or sending the payload to an unknown converter API.
Who Income Tax Calculator is for
- You need a result now and do not want another account wall.
- The file or text is sensitive enough that uploading feels wrong.
- A desktop suite is overkill for a one-page or one-photo job.
- You want a second opinion after another converter produced a weird output.
Recommended workflow
Enter principal/rate/tenure carefully → note that outputs are estimates → confirm with a lender or advisor for real decisions.
- Open Income Tax Calculator (also available from category hubs and ⌘K).
- Use the labeled fields or dropzone — options match what Income Tax Calculator actually does.
- Run the tool and wait for local progress to finish.
- Download or copy the result, then verify on the device where you will share it.
Tips that improve results
- Change one setting at a time when you are comparing quality or layout.
- Keep the original until stakeholders accept the download.
- Rename the output with date + purpose before you attach it to email.
- On phones, plug in power for large PDFs, videos, or spreadsheets.
- Prefer UTF-8 text for developer converters; weird encodings cause most “broken” results.
- Start with a non-sensitive sample so you learn the options before the real file.
Common mistakes with Income Tax Calculator
- Expecting Income Tax Calculator to replace a full desktop suite for every edge-case format.
- Skipping a sample check and discovering a bad export after the original was deleted.
- Chaining many lossy image/PDF steps when one careful pass would have been enough.
- Using a public computer without clearing downloads afterward.
Privacy model
Processing for Income Tax Calculator is designed to stay in the browser. Laravel serves the page; it does not receive your file bytes for conversion. Optional Supabase auth only stores which tool you ran and when — never filenames or contents.
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FAQ — Income Tax Calculator
Is Income Tax Calculator free to use?
Yes. Income Tax Calculator on TechDriven Tools is free — no account, no watermark, and no paywall for the core workflow.
Does Income Tax Calculator upload my file or text?
No for processing. Income Tax Calculator runs in your browser tab. Optional sign-in never stores file contents — only tool names and timestamps if you enable history.
When should I use Income Tax Calculator?
Use Income Tax Calculator for Finance jobs where privacy and speed matter: quick one-offs, sensitive inputs, or checking another app’s result without another upload site.
Will Income Tax Calculator work on my phone?
Yes in a modern mobile browser. Large inputs can take longer because your device does the work locally.
What are the limits of Income Tax Calculator?
There is no server quota from us. Limits are your device memory, battery, and formats the browser can decode. Income Tax Calculator will not pretend to support server-only Office or cloud-AI pipelines.
How is Income Tax Calculator different from upload-based sites?
Upload converters send your content to someone else’s server. Income Tax Calculator keeps the transform on-device whenever the format allows, which is the safer default for confidential documents, photos, tokens, and configs.
Bottom line
If you need Income Tax Calculator done quickly and privately, start at /income-tax-calculator, run it once on a sample, then process the real input. That is how TechDriven Tools stays competitive: honest capabilities, labeled UI, and content that matches what the tool actually ships.
From our blog: How to Estimate India Income Tax (Old vs New Regime)