Updated Return ITR-U: When and How to File in 2026

Most people know they need to file their ITR by July 31. Some know about the belated return option available till December 31. But very few know about the third option that stays open for 4 years after the end of the assessment year.

That option is the Updated Return, filed using ITR-U.

If you have missed declaring income, underreported earnings, or simply forgot to include a source of income in your original or belated return, ITR-U gives you a legal way to correct it. This guide explains exactly what updated return ITR-U is, when you can use it, what it costs, and how to file it step by step for FY 2025-26.

What Is ITR-U?

ITR-U stands for Updated Income Tax Return. It is governed by Section 139(8A) of the Income Tax Act 1961, which was introduced through the Finance Act 2022.

Before ITR-U existed, once the revised return deadline passed, taxpayers had no way to voluntarily correct their returns unless the Income Tax Department issued a notice. This created a problem: honest taxpayers who genuinely forgot to include income had no clean exit.

ITR-U solved this by giving taxpayers a window of 4 years to come forward, declare the missed income, and pay the applicable tax with an additional penalty charge.

The key principle behind ITR-U is voluntary disclosure. You are coming forward on your own, before the department catches the discrepancy. The government rewards this with a defined penalty structure rather than leaving you open to harsher scrutiny later.

When Can You File ITR-U?

You can file an updated return if any of the following apply:

• You did not file your original ITR at all
• You filed your original ITR but forgot to include a source of income
• You understated your income (declared less than the actual amount)
• You overstated your losses (claimed more loss than you actually had)
• You underpaid tax due to any of the above reasons

Deadline for FY 2025-26:

The updated return for FY 2025-26 (AY 2026-27) can be filed until March 31, 2031. That is a window of 4 years from the end of the assessment year.

When Can You NOT File ITR-U?

ITR-U cannot be used in every situation. There are specific cases where it is not allowed:

• To claim a refund or increase an existing refund
• To claim a loss for the first time or increase a previously declared loss
• If a search or survey has been conducted on you under the Income Tax Act
• If assessment or reassessment proceedings are already pending or completed for that year
• If the Assessing Officer has information about concealment of income for that year under specified provisions
• To reduce the income declared in your original return

This is an important point that many people miss. ITR-U is strictly a one-way street. You can only use it to declare more income or pay more tax. You cannot use it to reduce your tax liability.

Additional Tax on ITR-U: The Cost of Filing Late

Filing an updated return is not free. The government charges additional tax on top of your regular tax and interest. This additional tax increases the longer you wait.

What this means in practice:

For FY 2025-26 (AY 2026-27), the assessment year ends on March 31, 2027.

If you file ITR-U before March 31, 2028 (within 1 year of AY end): additional tax is 25%. If you file between April 1, 2028 and March 31, 2029: additional tax is 50%. If you file between April 1, 2029 and March 31, 2030: additional tax is 60%. If you file between April 1, 2030 and March 31, 2031: additional tax is 70%.

Calculation example:

Suppose you forgot to declare Rs. 1,00,000 of interest income in FY 2025-26. You are in the 30% tax bracket.

Tax on Rs. 1,00,000 = Rs. 30,000 Interest under Section 234A, 234B, 234C = approximately Rs. 4,500 Total (tax + interest) = Rs. 34,500 Additional tax at 25% (if filed within 1 year of AY end) = Rs. 8,625 Total payment = Rs. 43,125

The same calculation at 70% additional tax would make it Rs. 58,650.

The message is clear: file early. Every year you wait costs significantly more.I

ITR-U vs Revised Return vs Belated Return

These three options are often confused. Here is the key difference:

For a detailed comparison of revised return and belated return, see our guide: Belated Return vs Revised Return: Key Differences

Which ITR Form to Use for Updated Return?

ITR-U is a separate form. It is filed in addition to the original ITR form, not instead of it.

When you file ITR-U, you are essentially filing a schedule that shows the difference between what you originally declared and what you should have declared. The system links this to your original return.

For FY 2025-26, the ITR-U form is available on the income tax portal under the e-File section.

Step-by-Step: How to File ITR-U

Step 1: Log in to the Income Tax Portal

Go to incometax.gov.in and log in with your PAN and password.

Step 2: Go to e-File

Click on e-File in the top menu, then select Income Tax Returns, then File Updated Return (ITR-U).

Step 3: Select Assessment Year

Choose the assessment year for which you want to file the updated return. For FY 2025-26, select AY 2026-27.

Step 4: Select the Reason

The portal will ask you to select the reason for filing ITR-U. Options include:

• Return previously not filed
• Income not reported correctly
• Wrong heads of income chosen
• Reduction of carried forward loss
• Reduction of unabsorbed depreciation
• Reduction of tax credit under Section 115JB or 115JC
• Others

Select the most appropriate reason.

Step 5: Fill in the Updated Income Details

Enter the correct income figures. The form will automatically calculate the difference between your original return and the updated figures.

Step 6: Calculate Additional Tax

The portal calculates the additional tax based on when you are filing. Verify this calculation before proceeding.

Step 7: Pay the Tax

Pay the tax, interest, and additional tax through the portal before submitting the return. Keep the challan number.

Step 8: Submit and Verify

Submit the ITR-U and verify it using Aadhaar OTP, net banking, or by sending a signed physical form to the CPC.

Common Situations Where ITR-U Is Used

Situation 1: Forgot to declare FD interest

Many taxpayers do not realise that bank FD interest is taxable. If your bank deducted TDS at 10% but your actual tax rate is 20% or 30%, there is a shortfall. If you did not declare this in your original return, ITR-U is the correct way to fix it.

Situation 2: Freelance income not declared

If you earned income from freelance work or consulting and did not declare it while filing as a salaried employee, ITR-U allows you to add this income and pay the correct tax.

Situation 3: Capital gains not reported

If you sold mutual funds or shares and did not report the capital gains in your ITR, you can use ITR-U to declare this and pay the applicable tax. With Form 26AS and AIS now showing all your transaction data, the Income Tax Department already has this information. Filing ITR-U before they issue a notice is always the better option.

Situation 4: Rental income missed

If you received rental income but did not declare it under Income from House Property, ITR-U can be used to add it. For a complete understanding of how rental income is taxed, see our guide: Income Tax on Rental Income FY 2026-27

Situation 5: Never filed ITR at all

If you never filed your original return and the December 31 belated return deadline has passed, ITR-U is your only option to comply voluntarily.

Why File ITR-U Even If You Think the Department Will Not Notice?

This is the wrong way to think about it. Here is why.

The Income Tax Department receives data from banks, brokers, mutual fund houses, property registrars, and other financial institutions. This data is visible in your AIS (Annual Information Statement) and Form 26AS. The department uses this data to identify mismatches between what was reported by third parties and what you declared.

If the mismatch is found by the department before you file ITR-U, you lose the option to file it under most circumstances. The department can then issue a notice under Section 143(2) or initiate scrutiny assessment, which involves penalties that are far higher than the additional tax on ITR-U.

Voluntary disclosure through ITR-U is always cheaper and less stressful than a notice.

For understanding what the department can see about your finances, see our guide: How to Read Form 26AS and AIS: Complete Guide

Key Points to Remember

• ITR-U can only be used to pay more tax, never to reduce your tax or claim a refund
• The additional tax increases every year, so file as early as possible
• You need to pay the full tax, interest, and additional tax before submitting ITR-U
• Verification is mandatory, just like a regular ITR
• ITR-U is not available if the department has already initiated proceedings against you for that year
• For FY 2025-26, the window to file ITR-U at the lowest additional tax rate of 25% is open until March 31, 2028

Quick Reference: ITR-U at a Glance

Conclusion

The updated return through ITR-U is one of the most taxpayer-friendly provisions in Indian income tax law. It gives you a genuine second chance to get your taxes right without waiting for a notice from the department.

If you have any doubt about whether your past returns were complete and accurate, reviewing your AIS for those years is a good starting point. Any income reported by third parties that does not appear in your ITR is a candidate for ITR-U.

The cost of filing ITR-U goes up every year. The cost of ignoring it and getting a notice is always higher.

Next read: How to Verify ITR After Filing | ITR Refund Status Check: How to Track Your Refund

Written & Reviewed by

Diksha Chawla

Financial Educator & Content Creator | FinLecture.in

Diksha covers Indian income tax, mutual funds, ITR filing, and personal finance. FinLecture content is cross-checked against official government portals and SEBI/AMFI guidelines.

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