India income tax: old regime vs new regime, FY 2026-27

India’s new tax regime is the default; the old regime still exists if you claim enough deductions to make it worthwhile. Budget 2026 made no change to the slabs from FY 2025-26, so here’s where things stand for FY 2026-27 (illustrative — the Finance Act and CBDT are the authority, not this post):

New regime (₹75,000 standard deduction): 0% up to ₹4L, 5% ₹4–8L, 10% ₹8–12L, 15% ₹12–16L, 20% ₹16–20L, 25% ₹20–24L, 30% above ₹24L.

Old regime (₹50,000 standard deduction, no other deductions assumed): 0% up to ₹2.5L, 5% ₹2.5–5L, 20% ₹5–10L, 30% above ₹10L.

The new regime also carries a Section 87A rebate that wipes out tax entirely for taxable income up to ₹12L (up to ₹60,000 rebate). Just above that line, marginal relief matters: without it, earning ₹1,000 more than the ₹12L threshold could look like it costs tens of thousands more in tax — that’s not how the provision actually works, and a calculator that skips marginal relief will overstate your tax right at the cliff.

TryCalculatingNow’s income tax calculator models both regimes plus marginal relief, entirely in your browser. These are educational estimates, not tax advice — confirm your actual liability with the Finance Act or a professional before filing.