Guides

How the figures in the calculators are worked out, with examples. Each guide lists the official pages it relies on.

• New vs old tax regime in India, FY 2026-27: which leaves more in handCompare the new and the old income tax regime for FY 2026-27 on one CTC, and see how much you must claim in deductions before the old regime pays off.
• The 87A rebate and the 12 lakh limit, FY 2026-27: where tax startsHow the section 87A rebate and marginal relief work in the new regime for FY 2026-27, why a salary of 12.75 lakh pays no tax, and the old regime 12,500 rebate.

The guides are general information only. Rates as at 2 November 2026.