What Is an Amended Return? How to File One With the BIR (2026)

What is an amended return in BIR terms?

It is a replacement for a return already on file. The law does not let you withdraw a filed return. It lets you correct it. NIRC Sec. 6(A) says a filed return "shall not be withdrawn: Provided, That within three (3) years from the date of such filing, the same may be modified, changed, or amended: Provided, further, That no notice for audit or investigation of such return, statement or declaration has in the meantime been actually served upon the taxpayer."

There is no separate "amended return form". The BIR income tax forms carry the switch themselves. BIR Form 1701A and Form 1701 (January 2018 versions) have Item 2, "Amended Return? Yes / No", and a line for "Tax Paid in Return Previously Filed, if this is an Amended Return".

Who this guide is not for: anyone already served a Letter of Authority or other audit notice for the return (amendment is closed; see below), anyone already answering a BIR assessment notice, and anyone who never filed the original return. A return that was never filed is a late return, not an amendment. See what to do when you miss a tax deadline.

Can you still amend? Check two conditions

1. Three years from filing. The window runs from the date you filed the original, not from the deadline. A 2024 annual return filed on April 15, 2025 can be amended until April 15, 2028.
2. No audit notice served. Once a notice for audit or investigation of that return has actually been served, Sec. 6(A) no longer allows amendment. BIR audits are done "pursuant to a Letter of Authority issued by the Revenue Regional Director" (NIRC Sec. 13).

If both are true, you may amend. If either fails, the correction happens through the audit or assessment process instead.

How to file an amended return in eBIRForms or eFPS

Have these ready first:

• A copy of the return you filed, with its filing reference and proof of payment.
• The corrected figures and the documents behind them, such as a late Form 2307 or 2316.
• Your eBIRForms or eFPS login, the same channel you used for the original.

• Funds for the balance and interest, if the correction raises your tax.

• Recompute the correct tax. Use your corrected income, deductions and Forms 2307 or 2316. Run the figures through the income tax calculator.

• Open the same form for the same period. Use the form you filed originally, for the same year or quarter. The eBIRForms package covers Forms 1700, 1701 and 1701A. In eFPS, the BIR's own 1701Q procedure shows Item 3, "Amended Return?".
• Mark "Amended Return?" Yes. Enter the full corrected figures, not just the change.
• Enter the tax you already paid. On Form 1701A this is Item 61, "Tax Paid in Return Previously Filed, if this is an Amended Return". The form then shows only the balance or the overpayment.
• Check the penalty lines. If your original return was filed on time, the surcharge should be zero. Interest still runs on any balance.
• Validate and submit. In eBIRForms, fill up the form, validate, and click "Final Copy" to submit. In eFPS, validate, then submit. eFPS gives a reference number for the filed return.
• Pay the balance shown on the amended return, the same way you paid the original.

What it costs: difference, interest, and a surcharge only if the original was late

Charge	Regular taxpayer	Micro or small taxpayer
Tax difference	Corrected tax minus tax already paid	Same
Interest a year, from the original due date until paid	12% (RR 21-2018)	6% (RR 6-2024)
Surcharge if the original was filed on time	None (RMC 43-2022)	None if the original was also paid on time (RR 6-2024)
Surcharge if the original was late	25% (NIRC Sec. 248(A))	10% (RA 11976 Sec. 45(b))

The 12% rate is double the 6% legal interest rate set by the BSP, per RR 21-2018. Interest runs "from the date prescribed for payment until the amount is fully paid" (NIRC Sec. 249(A) as amended by RA 10963 Sec. 75). For an annual return, the date prescribed is April 15 (NIRC Sec. 51(C)(1)).

RMC 43-2022 states: "The 25% surcharge shall not be imposed to an amendment of a tax return if the taxpayer was able to file the initial tax return on or before the prescribed due date for its filing." RR 6-2024 gives micro and small taxpayers the same relief where they "filed the initial tax return and paid the tax due thereon, on or before the prescribed due date." Under RR 8-2024, micro means gross sales below ₱3,000,000 a year and small means ₱3,000,000 to below ₱20,000,000.

A willfully false or fraudulent return is a different case: the surcharge is 50% under NIRC Sec. 248(B).

Worked example

Ana is a freelance designer on the 8% option. The 8% applies to gross receipts above ₱250,000 (RA 10963). Her gross is under ₱3,000,000, so she is a micro taxpayer.

• Original 2024 Form 1701A, filed and paid April 15, 2025: gross ₱900,000. Tax = 8% × (₱900,000 − ₱250,000) = ₱52,000.
• In 2026 she finds a ₱150,000 client payment she left out. Corrected gross ₱1,050,000. Tax = 8% × (₱1,050,000 − ₱250,000) = ₱64,000.
• Difference: ₱64,000 − ₱52,000 = ₱12,000.
• She files the amended 1701A and pays on April 15, 2026, one year after the due date. Interest = ₱12,000 × 6% × 1 year = ₱720.
• Surcharge: none, because the original was filed and paid on time.
• Total due with the amended return: ₱12,720.

The same ₱12,000 difference for a regular taxpayer carries ₱1,440 of interest (12%). If the original return had been late, the surcharge on the ₱12,000 would be ₱1,200 for a micro taxpayer (10%) or ₱3,000 for a regular taxpayer (25%).

If the amended return shows an overpayment

The form asks what to do with it. Form 1701A says: "If overpayment, mark one (1) box only. (Once the choice is made, the same is irrevocable)". The boxes are: to be refunded, to be issued a Tax Credit Certificate (TCC), or to be carried over as a tax credit for next year or quarter.

• Corporations: under NIRC Sec. 76 as amended by RA 11976 Sec. 10, once the carry-over option is made it "shall be considered irrevocable for that taxable period and no application for cash refund or issuance of a tax credit certificate shall be allowed therefor."
• Which box to pick: choose carry-over only if you expect tax due in the next periods to absorb it. If you do not, choose a refund or a TCC. You cannot switch later.
• Two-year limit: NIRC Sec. 204(C) as amended by RA 11976 Sec. 31 allows no credit or refund unless the claim is filed "within two (2) years after the payment of the tax or penalty as provided under Section 229". It also says "a return filed showing an overpayment shall be considered as a written claim for credit or refund". The BIR must decide within 180 days from submission of complete documents.
• If the claim is denied: under Sec. 229 as amended by RA 11976 Sec. 32, you may appeal to the Court of Tax Appeals within 30 days from receipt of the denial, or after the 180-day period lapses without action.

Common reasons to amend

• Income left out, such as a client payment or a second employer.
• A Form 2307 or 2316 that arrived after you filed, changing the tax withheld.
• Arithmetic or encoding errors on the return.
• A wrong figure for gross sales, deductions or tax credits.

Next steps

1. Recompute your corrected tax in the income tax calculator.
2. Check the form rules on our BIR Form 1701 page, or refresh the filing steps in how to file your ITR.
3. For penalty detail beyond amendments, read BIR penalties: surcharge and interest.