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A rectification request is a formal application to correct a mistake that is "apparent from record" in an order passed by the Income Tax Department. You can file one against an Intimation issued under Section 143(1), an order under Section 154 passed by CPC, or an Assessment Order passed by your Assessing Officer (AO).

The key word is "apparent." This process is for clear, visible errors, a deduction you claimed that wasn't allowed, a TDS credit that was ignored, or a tax challan detail that was entered incorrectly. It is not meant for correcting mistakes you made in your original return. Those need a revised return instead.

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The e-Filing portal offers three distinct rectification options, and picking the wrong one will get your request rejected.

Reprocess the return: Use this when you filed your return correctly but CPC ignored something during processing. For example, a deduction you legitimately claimed was not allowed, or your TDS credit was not given despite being correctly entered.

Tax credit mismatch correction: Use this to fix errors in TDS, TCS, advance tax, or self-assessment tax challan details. For example, if you entered the wrong BSR code, wrong payment date, or wrong challan number, this is where you fix it. You can also add a new self-assessment tax challan here if you've paid a demand and want it reflected.

Return data correction (offline): Use this if you entered income under the wrong head, or need to correct other data that doesn't change your gross total income or total deductions. For AY 2020-21 onwards, this can be done by uploading a JSON file online.

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This is where most people go wrong. A rectification request has strict limits, and the portal will block you if you try to cross them.

You cannot claim any new deduction or exemption that wasn't in your original return. You cannot declare a new source of income. You cannot make fresh claims for carry-forward losses, brought-forward losses, or MAT credit. You cannot change your income, bank details, or address — those need a revised return. And you cannot switch to a different ITR form — if you originally filed ITR-1, you must use ITR-1 in the rectification too.

If the change you need falls into any of these categories, a rectification request is the wrong tool entirely.

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The path is the same regardless of which type of rectification you're filing. Log in to the e-Filing portal at incometax.gov.in. Go to Services in the top menu. Select Rectification. Then choose the correct category, rectification against order passed by CPC, rectification against CIT(A) order, or request to AO seeking rectification.

If you're filing against a CPC order, the portal will show you the eligible assessment years and request types. Select the right one, fill in the required details, and submit. You do not need to e-verify your rectification request, and DSC (Digital Signature Certificate) is not mandatory even if you're required to be audited under Section 44AB.

Once submitted, you'll receive a 15-digit rectification reference number by email or SMS. You can also find it under Rectification Status in your e-Filing account.

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Not everyone can file a rectification on the portal. Only the following parties are eligible: registered taxpayers who received the order or notice directly, ERIs (e-Return Intermediaries) who have added the client's PAN to their account, and authorised signatories or representatives of the taxpayer.

Also important: rectification requests cannot be filed in paper form. Everything must be done electronically through the portal. If your return was filed on paper originally, CPC will not accept a paper rectification, you would need to approach the Assessing Officer directly.

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You have a window of 4 years from the end of the financial year in which the CPC order or intimation was passed to file a rectification request online. Miss that window and the CPC portal will block you from proceeding.

However, all is not lost after the 4-year deadline. The e-Filing portal now has an option to file your rectification directly with your Jurisdictional Assessing Officer (JAO). You provide your rectification reason and can attach a supporting PDF document of up to 5MB. Once submitted, the application is transferred to your JAO for processing. The same JAO route is also available if your rectification request is rejected by CPC, or if the Reprocess and Return Data Correction options are greyed out.

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Two rules that catch people off guard. First, you cannot have two active rectification requests for the same assessment year at the same time. If a previous request is still pending with CPC, the portal will not allow you to submit another one until that request has been acted upon.

Second, once you submit a rectification request, you cannot withdraw it and you cannot revise it. If you uploaded the wrong details, you have no choice but to wait for CPC to process the existing request and then file a fresh one with the correct information. This makes it especially important to double-check all entries before hitting submit.

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Want to appeal instead? If you disagree with a rectification order that CPC has passed, you have the right to file an appeal directly with the Commissioner of Income Tax (Appeals), also known as CIT(A).

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Before you submit your rectification request, run through this list:
1.Have you received an actual order or intimation from CPC? If not, you need a revised return, not a rectification.
2.Is it within 4 years of the CPC order? If not, you'll need to go through the JAO route.
3.Are there any pending rectification requests for the same assessment year? Wait for those to be resolved first.
4.Are you correcting something that was already in your original return — not adding something new? Rectification only fixes existing entries, it doesn't add new ones.
5.Have you selected the right type? Reprocess, Tax Credit Mismatch, or Return Data Correction? The wrong choice wastes time.

If all five answers check out, you're ready to file. Log in to incometax.gov.in, go to Services, and select Rectification.