Income Tax Demand After Paying Tax? Don't Pay It Twice

You paid ₹22,400 of self-assessment tax on 20 July 2026, filed your return for AY 2026-27 two days later, and in September an intimation under section 143(1) arrives showing a demand of ₹22,400 plus interest. The money has left your account and shows against your PAN in Form 26AS. So why is the department asking for it again?

Do not pay it a second time. A second payment comes back only as a refund after your return is reprocessed, which can take months. Fix the record instead. You have two routes, and you can use both where they fit:

• a rectification request under section 154, which asks CPC (the Centralized Processing Centre in Bengaluru) to correct a mistake apparent from the record, and
• a revised return under section 139(5), which replaces your original return, while its time limit is still open.

While either is pending, record your view on the demand through Response to Outstanding Demand on the portal.

Why CPC raised a demand for tax you already paid

CPC processes your return by machine. It gives you credit only for the taxes listed in the return's own schedules:

• Schedule TDS 1 and TDS 2 for tax deducted from salary, interest, rent or fees
• Schedule TCS for tax collected at source
• Schedule IT for advance tax and self-assessment tax you paid yourself

The usual causes of a demand despite payment are:

1. The challan was left out of Schedule IT. The payment exists in the government's records, but the return did not claim it, so CPC computed tax as unpaid.
2. A challan detail was typed wrong. One wrong digit in the BSR code, challan serial number, date or amount, and the claim does not match the payment.
3. TDS claimed in the return did not match Form 26AS. The deductor filed its TDS return late, under the wrong PAN, or for a different amount.
4. The challan was paid under the wrong assessment year or minor head. For example, paid as advance tax (minor head 100) for AY 2027-28 instead of self-assessment tax (minor head 300) for AY 2026-27.
5. CPC's computation itself differs from yours, for example in interest under section 234A, 234B or 234C.

Where the interest is real (tax paid after its due date attracts interest under sections 234B and 234C even if paid before filing), that part of the demand is correct and stays after the fix. The rest should go.

Rectification, revised return, or both

Rectification under section 154

Section 154 lets the department correct a mistake apparent from the record. A tax payment that sits in the government's own records against your PAN, but was not given credit, is one of the most common reasons people file it. The portal offers a request type built for this: Tax Credit Mismatch Correction, which lets you add or correct entries in Schedule IT, TDS and TCS without filing a whole new return.

Rectification fits when:

• the challan was paid before processing and is visible in Form 26AS or AIS, but missing or wrong in Schedule IT
• TDS shown in Form 26AS was not credited
• CPC did not consider prepaid taxes you did claim
• the demand comes from an arithmetic error or a mismatch between figures in the return

A rectification request can be filed only against an intimation or order that has already been issued, so wait for the 143(1) intimation. The limit is four years from the end of the financial year in which that intimation was passed, so time is rarely the problem.

Revised return under section 139(5)

A revised return replaces your original return in full. It fits when the mistake was in your own filing beyond the missing challan: you left out interest income, claimed a deduction you were not entitled to, picked the wrong ITR form or chose the wrong regime. Because it is a complete return, you can add the missing challan in the same filing.

For AY 2026-27, the Finance Act 2026 extended the time to file a revised return to 31 March 2027 (earlier it was 31 December), or before the assessment is completed, whichever is earlier. A revised return filed after 31 December 2026 attracts a fee, so revise before then if you can, and check the fee shown on the portal when you file. If the window has closed, rectification is still open to you for credit and arithmetic mistakes.

Doing both

The two routes do not exclude each other. If the 139(5) window is open and you find other errors in your return, you can file the revised return (including the challan) and also file a rectification so that the existing intimation is corrected while the revised return waits to be processed. When the revised return is processed, its intimation supersedes the earlier one.

How to file the rectification request

Keep the challan receipt or Form 26AS open. You need four details:

• BSR code (7 digits, identifies the bank branch)
• Challan serial number (5 digits)
• Date of deposit
• Amount

Then:

1. Log in to incometax.gov.in.
2. Go to Services > Rectification and click New Request.
3. Select Income Tax Rectification, the Assessment Year (2026-27 in our example) and confirm the intimation it shows.
4. Choose the request type. For a missing or wrong challan, or uncredited TDS, choose Tax Credit Mismatch Correction and tick the schedule to correct (Schedule IT for self-assessment tax). If you think CPC simply missed something you already claimed correctly, Reprocess the Return is the shorter option.
5. Add the challan with the BSR code, serial number, date and amount, exactly as on the receipt.
6. Submit and e-verify if the portal asks you to.

Track it under Services > Rectification > View Filed Requests. When CPC processes it, you receive a fresh order under section 154, and the demand on the portal drops to the corrected figure.

How to file the revised return

1. Log in and go to e-File > Income Tax Returns > File Income Tax Return.
2. Select the Assessment Year (2026-27), filing mode Online, your status and the same ITR form as before.
3. For filing section, choose 139(5) - Revised Return and enter the acknowledgement number and filing date of the original return.
4. Fill the return as a complete return. Check every income schedule, every deduction, and Schedule TDS 1, TDS 2 and TCS. If you file only the change and leave the rest blank, you are filing a return with less income and fewer deductions than before.
5. In Taxes Paid, add the challan in Schedule IT with the four details above.
6. In Part B-TTI, confirm that the balance payable is now zero, or only the interest you genuinely owe.
7. Submit and e-verify within 30 days through Aadhaar OTP, net banking or DSC. A revised return that is not e-verified within 30 days is treated as not filed, and your original return with its demand stays in force.

Responding to the demand while you wait

A rectification or revised return can take weeks to process. Meanwhile the demand stays open on the portal and can be adjusted against a future refund. Record your position:

1. Go to Pending Actions > Response to Outstanding Demand.
2. Find the demand for AY 2026-27 and click Submit Response.
3. Choose Disagree with the demand (either in full or part). If part of it is interest you accept, choose the partial option and enter the amount you agree with.
4. Pick the reason that matches from the list the portal shows, such as tax already paid or rectification filed, and enter the challan details or rectification reference it asks for.
5. Submit.

A note you can adapt for the remarks box:

Self-assessment tax of ₹22,400 was paid on 20/07/2026 (BSR code 0123456, challan no. 12345) before the return was filed. The challan was not claimed in Schedule IT. A rectification request under section 154 has been filed on DD/MM/YYYY to give credit for it.

If you agree the demand is correct, choose that option and pay it through e-Pay Tax. Paying an incorrect demand only to clear the screen leaves you chasing a refund later.

Before you file anything

• Check the challan in Form 26AS or AIS first. If it is missing there, the problem is with the payment (wrong PAN, wrong AY or a bank delay), and no rectification will fix it until the challan shows against your PAN.
• If the AY or minor head on the challan is wrong, request a correction from Services > Challan Correction on the portal where the option is available for your challan, or through your bank or assessing officer for older challans. Once the challan sits under the right year, file the rectification.
• Do not use an updated return (ITR-U) for this. An updated return under section 139(8A) cannot reduce your tax liability or increase a refund, so it cannot be used to claim a missed challan.
• If CPC rejects the rectification or the time limits have run out, write to your jurisdictional assessing officer with the challan and Form 26AS, and use the portal's e-Nivaran grievance option if there is no reply.

If you track this for several PANs in your family, myutils.me shows each PAN's outstanding demands with the DIN, dates and interest after you add the PAN or press Sync. Press Sync once CPC has processed your request to check that the demand is gone. It is an independent app that reads the portal for you; the rectification itself is filed on the portal.