ITR Deadline 2026: Don't Make These 5 Mistakes Before Filing Your Income Tax Return; Check Late Filing Penalty

The income tax return deadline is now approaching and is just 3 days away. It is the most important time for salaried individuals and non-audit individuals.

The ITR filing deadline has been set for July 31st for the assessment year 2026-27, and those who have not already filed the ITR must act quickly before the last date arrives.

In doing so at the last moment, people might come across recurring errors that can cost taxpayers money and may also result in delayed refunds or any kind of unwanted scrutiny from the department. This year, for the first time, the ITR deadline is different for different form types. For ITR-1 and ITR-2 filers, the deadline is July 31st, but for ITR-3 & ITR-4 filers the deadline is August 1st. Also, the audit cases are due by October 31, and transfer pricing cases by November 30. Here are the top mistakes that you can avoid before the July 31st deadline:

1. The most common mistake is not combining income and TDS figures across Form 16, the Annual Information Statement (AIS), and Form 26AS before filing, since mismatches between what an employer reports and what shows up in the AIS or 26AS are a common trigger for automated scrutiny.

2. Another mistake is not reporting all bank accounts held during the year, which can leave gaps in the disclosure

3. A third mistake is ignoring income that is already in the AIS, mainly the dividend, interest, or capital gains income. Taxpayers sometimes assume small amounts of interest or dividend income are too minor to matter, but the department's automated matching flags omissions regardless of size, meaning even a modest missed entry can trigger the same mismatch notice as a much larger one.

4. The fourth mistake is that taxpayers who switched jobs during the financial year do not take into account both Form 16s, one from each employer, when calculating total income.

5, The fifth and one of the most important errors is not going through the process of e-verifying the ITR after submission. A return that is filed but not verified within the prescribed window is treated as not filed at all, which can mean losing out on the benefits even if you file ITR timely

Penalties For Delay in Filing ITR

It is very important to note that missing the July 31st deadline itself has a direct cost on taxpayers who file late.

If you miss the deadline, you are liable to pay Rs. 1,000 for total income up to Rs. 5 lakh and Rs. 5,000 above that threshold under section 234F of the Income Tax Act.

In addition to that, taxpayers also lose the right to carry forward short-term and long-term capital losses or business losses to future years
Having said that, taxpayers must know that if they discover an error after filing ITR, it isn't necessarily a reason to panic. A revised return can be filed under Section 139(5), which for AY 2026-27 has itself been extended, from the earlier December 31 cutoff to March 31, 2027.