ITR & Compliance
ITR forms and due dates, advance tax, interest, AIS, notices and Budget 2026 changes.
6 guides · read in order or jump to what you need
01
ITR forms and due dates
Which form to use, the due dates (including the new 31 August date), and belated, revised and updated returns.
02
Advance tax, self-assessment tax and interest
Who pays advance tax, the four instalment dates, and the 1% a month interest if you pay late.
03
AIS, Form 168 (26AS) and income tax notices
Check what the department already knows before you file, and how to handle the common notices.
04
Budget 2026: income tax changes at a glance
Everything the 1 February 2026 Budget changed for individuals and businesses, effective from tax year 2026-27.
05
Received an income-tax notice? What it means and what to do
Verify the notice, understand why it came and respond on the e-filing portal before the deadline.
06
Income tax interest, late fees and penalties
What you pay for late returns, short advance tax and under-reported income, and how an updated return can help.