BIR Pushes Tax Filing Deadline to August 18, 2026 After Second Southwest Monsoon Extension

Updated to reflect RMC No. 095-2026 and the August 18 deadline. This post originally covered RMC No. 089-2026 and the August 17 deadline.

If your business sits within one of the Revenue District Offices (RDOs) listed below, your BIR deadline has now moved twice, and it’s not August 17 anymore.

On August 10, 2026, the Bureau of Internal Revenue (BIR) issued Revenue Memorandum Circular (RMC) No. 089-2026, extending statutory deadlines for filing tax returns, paying taxes due, and submitting required documents to August 17, 2026, for taxpayers and Authorized Agent Banks (AABs) registered under RDOs affected by the continued heavy rainfall brought about by the Southwest Monsoon.

As the rains persisted, the BIR followed up on August 14, 2026 with RMC No. 095-2026, pushing that same deadline one more day to August 18, 2026.

Why the Extension Was Issued

The circular was issued pursuant to Section 3 of Revenue Regulations No. 13-2024, following Memorandum Circular No. 123, Series of 2026, issued by the Office of the President upon the recommendation of the National Disaster Risk Reduction and Management Council (NDRRMC) on August 9, 2026. That memorandum authorized work-from-home arrangements across affected areas due to the ongoing heavy rains.

In response, the BIR gave both taxpayers and its own personnel extra time to comply with statutory tax deadlines that would otherwise have fallen due during the height of the disruption.

Extended Again: RMC No. 095-2026 Moves the Deadline to August 18

The rains didn’t let up. By mid-August, the enhanced Southwest Monsoon, combined with tropical cyclones Luis and Maymay, had affected more than 4.1 million people nationwide, according to the National Disaster Risk Reduction and Management Council (NDRRMC). In response, BIR Commissioner Charlito Martin Mendoza announced a further one-day extension, formalized as RMC No. 095-2026, moving the same set of deadlines from August 17 to August 18, 2026.

RMC No. 095-2026 also does two more things worth flagging:

• It widens coverage to a second group of taxpayers. Those who were unable to file or pay on time because of technical issues with the eBIRForms Offline Package, regardless of RDO.
• It does not widen coverage to everyone. Taxpayers required to use the Electronic Filing and Payment System (eFPS) who were not already covered under RMC No. 089-2026 remain excluded. If that’s you, you still need to file and pay through eFPS on the original schedule.

The BIR also issued a companion Bank Bulletin directing Authorized Agent Banks to accept covered tax returns and payments through August 18, 2026 without penalty, for both the monsoon-affected taxpayers and those hit by the eBIRForms outage.

What’s Covered

The extension applies to filing, e-filing, payment, e-payment, submission, e-submission, and registration deadlines that originally fell between August 10 and August 16, 2026, all now due on August 18, 2026 per RMC No. 095-2026 (originally August 17, 2026 under RMC No. 089-2026). Here’s the breakdown:

If any of the newly extended due dates falls on a holiday or non-working day, filing shifts to the next working day.

Which RDOs Are Covered

The extension applies throughout the areas affected by the Southwest Monsoon and associated typhoons. Here’s the full list, organized by region for easier reference:

1. Metro Manila

2. Ilocos Sur

3. La Union and Pangasinan

4. Abra, Apayao, Benguet, Ifugao, Kalinga, Mountain Province

5. Bataan, Bulacan, Pampanga, Tarlac, Zambales

6. Cavite, Batangas, Rizal, and Mindoro

Key Dates at a Glance

What This Means for Your Business

If you’re registered under any of the RDOs above, you effectively have until August 18, 2026 to file and pay without incurring penalties for the returns and forms listed in RMC Nos. 089-2026 and 095-2026. If you were unable to file because of the eBIRForms Offline Package issue, the same August 18 deadline applies to you regardless of RDO.

If your RDO isn’t on the list and you’re required to use eFPS, your original deadlines still apply. This extension is location- and circumstance-specific, not a relief to every businesses.

As always with weather-related extensions, keep your stamped/received copies and payment confirmations on hand in case of any dispute over timeliness, and check the BIR website for any follow-on issuance if the monsoon situation continues to develop.

Need Help Sorting Out Your Filings?

Deadline extensions are helpful, but they also mean shifted priorities across your books, especially if you’re juggling multiple RDOs or catching up on delayed submissions.

If you want a second pair of eyes on your compliance calendar or just want someone else to handle the filing scramble, get in touch with CloudCFO. We help SMEs stay on top of BIR requirements so surprises like this don’t turn into penalties.