How to Amend an Already-Filed BIR Annual Alphalist (1604-C, 1604-E, or 1604-F)

You can amend an already-filed BIR annual alphalist — the Alphalist of Employees under Form 1604-C, the Alphalist of Payees under Form 1604-E, or the Alphalist of Payees under Form 1604-F — within three years of the original filing date, as long as the BIR has not yet served a notice of audit or investigation on you. There is no separate “amendment” form: you correct the source data, regenerate the same DAT file, and resubmit it through the same channel you used the first time.

What does “amending” an annual alphalist actually mean? #

Amending an annual alphalist means correcting an error in the employee or payee data already submitted with BIR Form 1604-C, 1604-E, or 1604-F and resubmitting a fixed version — not filing a brand-new return. Because the annual alphalist is a once-a-year information return, not a quarterly one like QAP or SAWT, an error discovered mid-year has no upcoming filing period to quietly absorb the correction into; it has to be fixed directly against the already-closed annual filing.

Common triggers for an amendment include a resigned employee omitted from the 1604-C alphalist, a payee’s TIN or ATC code entered incorrectly on the 1604-E alphalist, a compensation or tax-withheld figure that doesn’t match what was actually remitted, or a mismatch discovered only when an employee’s BIR Form 2316 total is compared against the alphalist during their own income tax filing.

Can you legally amend an annual alphalist after the deadline has passed? #

Yes — the legal basis is the general amended-return rule in Section 6(A) of the National Internal Revenue Code (NIRC), which applies to any return filed with the BIR, including the annual information returns and alphalists covered here. Two conditions both have to hold: the amendment must happen within three years of the original filing date, and the BIR must not have already served a notice of audit or investigation — most commonly a Letter of Authority — in the meantime.

Section 6(A) provides:

“Any return, statement of declaration filed in any office authorized to receive the same shall not be withdrawn: Provided, That within three (3) years from the date of such filing, the same may be modified, changed, or amended: Provided, further, That no notice for audit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.”

Applied to an annual alphalist: if you filed BIR Form 1604-C on January 31, 2026, you generally have until January 31, 2029 to correct it voluntarily, unless the BIR serves an audit notice first — at which point the correction runs through the BIR’s assessment process instead of a simple voluntary amendment.

How do you actually correct and resubmit the alphalist? #

The mechanics mirror how a corrected DAT file is resubmitted for any BIR filing: fix the source data, regenerate the file, and send it back through the original channel — there is no dedicated “amended alphalist” form or portal. The steps below assume the error is discovered after the original filing was already accepted, not caught during pre-submission validation.

1. Identify the exact error — a missing employee or payee row, a wrong TIN, an incorrect ATC or exemption code, or a compensation/tax-withheld amount that doesn’t tie to payroll or the BIR Form 2307/2316 records.
2. Correct the underlying payroll or payee workbook, not just the DAT file directly, so the fix is traceable back to your books.
3. Regenerate the Form 1604-C, 1604-E, or 1604-F DAT file from the corrected data, keeping the same TIN, RDO code, and taxable year so the BIR can match it to the original filing.
4. Resubmit through the same channel as the original — typically emailing the corrected file to esubmission@bir.gov.ph with a subject line identifying it as a correction, the same mechanism used for a first-time RELIEF, SAWT, or QAP resubmission.
5. Reissue any affected certificate. If the correction changes what a specific employee’s Form 2316 or a payee’s Form 2307 reported, reissue that certificate too — see Fixing Errors on BIR Form 2316 After Issuance for the RE-PRINT watermark rule that applies to a reissued certificate.
6. Amend the return itself if totals changed. A correction that changes the alphalist’s totals should be accompanied by an amended Form 1604-C, 1604-E, or 1604-F, since the alphalist is an attachment to that return, not an independent filing.

What penalty applies if the correction is made late or not at all? #

Because the annual alphalist is an information return, a version that was wrong when filed — or never corrected once the error was known — exposes the withholding agent to the same Section 250 NIRC penalty that applies to a late or missing information return, on top of any deficiency withholding tax the underlying error caused. Section 250 states:

“In the case of each failure to file an information return, statement or list, or keep any record, or supply any information required by this Code or by the Commissioner on the date prescribed therefor, unless it is shown that such failure is due to reasonable cause and not to willful neglect, there shall, upon notice and demand by the Commissioner, be paid by the person failing to file, keep or supply the same, One thousand pesos (P1,000) for each such failure: Provided, however, That the aggregate amount to be imposed for all such failures during a calendar year shall not exceed Twenty-five thousand pesos (P25,000).”

A voluntary correction made promptly after discovering the error is treated far more leniently in practice than a discrepancy the BIR finds first — during an audit, or when an employee’s substituted-filing return doesn’t reconcile with what the employer reported. If the underlying error also understated tax actually withheld, expect deficiency withholding tax and interest under NIRC Section 249 in addition to the Section 250 information-return penalty.

A worked example #

Mabuhay Retail Corp. filed its BIR Form 1604-C on January 30, 2026, covering calendar year 2025. In June 2026, its payroll officer discovers that Jenny Reyes, a cashier who resigned in March 2025, was left off the alphalist entirely — her final BIR Form 2316 had been issued to her, but the corresponding row never made it into the alphalist workbook before the DAT file was generated.

To fix it: the payroll officer adds Jenny’s row back into the master payroll workbook (gross compensation ₱142,500, tax withheld ₱6,300 for the partial year), regenerates the 1604-C DAT file for the same TIN and 2025 taxable year, and emails the corrected file to esubmission@bir.gov.ph referencing the original filing. Because Jenny’s Form 2316 was already correct and already issued to her, no certificate reissuance is needed — only the alphalist itself was incomplete. Mabuhay Retail Corp. voluntarily discloses the correction rather than waiting for the BIR to flag the gap, since the three-year Section 6(A) window is open and no audit notice has been served.

Annual alphalist correction vs. quarterly DAT file correction #

Correcting the once-a-year 1604-C/1604-E/1604-F alphalist follows the same general resubmission mechanics as correcting a quarterly RELIEF, SAWT, or QAP DAT file, but the stakes differ because there’s no upcoming quarter to catch a missed detail.

For the quarterly-filing version of this process, see How to Correct and Resubmit a RELIEF, SAWT, or QAP DAT File After eSubmission. For background on the annual alphalist itself — what it covers and when each version is due — see BIR Annual Alphalist (1604-C, 1604-E, 1604-F): What It Is and When It’s Due.

Frequently asked questions #

Can you still amend a BIR annual alphalist after the January 31 or March 1 deadline? #

Yes. NIRC Section 6(A) lets a taxpayer modify, change, or amend a filed return within three years of filing, provided the BIR has not yet served a notice of audit or investigation. The January 31 (1604-C, 1604-F) and March 1 (1604-E) dates are filing deadlines, not the cutoff for correcting an error you find afterward.

Is there a separate BIR form for amending the annual alphalist? #

No. There is no distinct “amended alphalist” form. You correct the underlying payee or employee data, regenerate the same Form 1604-C, 1604-E, or 1604-F DAT file with the fix applied, and resubmit it through the same channel used for the original — typically eSubmission at esubmission@bir.gov.ph — marked or referenced as a correction to the original filing.

What happens if I amend my 1604-C alphalist after an employee already relied on their BIR Form 2316 for substituted filing? #

If the correction changes that employee’s reported compensation or tax withheld, you generally need to reissue a corrected Form 2316 as well, following the RE-PRINT watermark rule under Revenue Memorandum Circular No. 29-2021. A material change can also affect whether the employee still qualifies for substituted filing — see the BIR Form 2316 corrections guide for that process.

What penalty applies for correcting an annual alphalist late? #

The annual alphalist is an information return, so a correction that amounts to a late-filed or previously omitted information return exposes the withholding agent to the Section 250 NIRC penalty — P1,000 per failure, capped at P25,000 per calendar year — plus any applicable compromise penalty under RMO No. 7-2015. This is separate from any deficiency withholding tax and interest if the error understated tax actually withheld.

Does amending the annual alphalist also require amending BIR Form 1604-C, 1604-E, or 1604-F itself? #

Yes, in practice they move together. The alphalist is filed as an attachment to its annual information return, so a corrected alphalist is submitted alongside a corrected or re-filed version of the return it supports, not as a standalone replacement file.

Summary #

An already-filed BIR annual alphalist can be amended within three years of filing, as long as no BIR audit notice has been served, under the general NIRC Section 6(A) amended-return rule — there’s no dedicated correction form, just a regenerated DAT file resubmitted through the same channel as the original. Fix the source data first, keep the same TIN and taxable year so the BIR can match the correction, reissue any affected BIR Form 2307 or 2316 certificate, and amend the underlying 1604-C, 1604-E, or 1604-F return if totals changed. Left uncorrected, the gap exposes the withholding agent to the Section 250 information-return penalty on top of any deficiency withholding tax. See BIR Annual Alphalist (1604-C, 1604-E, 1604-F): What It Is and When It’s Due for the filing basics, or Fixing Errors on BIR Form 2316 After Issuance if the correction also touches an employee’s certificate.