---
type: "tool"
title: "Income Tax Calculator"
description: "Compare old and new tax regimes for FY 2025-26 (AY 2026-27) or Tax Year 2026-27. Your selected period is shown in the result."
resource: "https://www.gstcalculators.in/income-tax-calculator.html"
language: "en"
bundle_generated: "2026-10-12"
---

# Income Tax Calculator

Compare old and new tax regimes for FY 2025-26 (AY 2026-27) or Tax Year 2026-27. Your selected period is shown in the result.

- Canonical page: [Income Tax Calculator](https://www.gstcalculators.in/income-tax-calculator.html)
- Publisher: [Tool Master Hub / GSTCalculators.in](../site.md)
- Category: [Tax and Loan Calculators](../categories/taxloan.md)

This is a discovery summary of the public page, not an independently reviewed replacement. Use the canonical page for current inputs, assumptions, formulas, source links and results. The bundle generation date does not mean that tax rules were reviewed on that date.

## Topics on the page

- ₹12 lakh rebate cliff — how this calculator handles it

## Questions and answers from the visible page

### What replaced Section 80C?

Under the Income-tax Act 2025, in force from 1 April 2026, Section 80C is renumbered Section 123. Limits are unchanged — only the numbering and terminology moved.

### What is a 'Tax Year'?

The Income-tax Act 2025 retires the Assessment Year concept. Income is now referenced by the Tax Year in which it is earned, removing the AY/FY confusion that caught out filers for decades.

### Did the tax slabs change for FY 2026-27?

No. Slab rates carry over unchanged. The Act 2025 was a restructuring and renumbering exercise — 819 sections became 536 — not a rate change.

### When is my ITR due?

31 July 2026 for ITR-1 and ITR-2, and 31 August 2026 for non-audit ITR-3 and ITR-4. The revised-return window is now twelve months, up from nine, with a fee if filed after month nine.

## Accuracy and corrections

[Methodology](https://www.gstcalculators.in/methodology.html) · [Editorial policy](https://www.gstcalculators.in/editorial-policy.html) · [Disclaimer](https://www.gstcalculators.in/disclaimer.html) · [Report a problem](https://www.gstcalculators.in/contact.html).