December Income Tax Calendar: Don’t Miss THESE 4 Critical Deadlines — Belated ITR, Advance Tax & More

December Income Tax Calendar: Don’t Miss THESE 4 Critical Deadlines — Belated ITR, Advance Tax & More
The first big deadline of the month is 10 December 2025. On this day, all corporate and non-corporate taxpayers whose accounts are subject to audit must file their Income Tax Returns for Assessment Year 2025–26.