BIR Q3 Tax Deadline Reminder Philippines (October Deadlines)

The third quarter is over and October is here, which means your BIR Q3 deadline Philippines October 2026 is coming up fast. This is one of the busiest filing months of the year because two major deadlines land within weeks of each other. If you are a freelancer, online seller, sari-sari store owner, or small business owner, this post is your reminder to act now before the penalties kick in.

What Is Due in October and November

The Q3 filing season covers income and sales from July 1 to September 30, 2026. Two separate returns come due in this period, and they are not the same filing.

Here is the thing: many taxpayers confuse the two deadlines or assume one covers the other. They do not. You need to file both if your registration requires it.

Form 2551Q: Quarterly Percentage Tax

This covers the 3% business tax on your gross receipts from July to September 2026. It is due on October 25, 2026. This applies to non-VAT registered taxpayers under the graduated income tax option. If you elected the 8% flat tax option, you do not file this form.

Form 1701Q: Quarterly Income Tax

This covers your income tax for the third quarter, July to September 2026. It is due on November 15, 2026. This applies to all self-employed individuals, professionals, and mixed-income earners regardless of which tax option they chose.

Who Needs to File These Returns

The October BIR deadline 2026 applies to any registered taxpayer who is self-employed, a professional in private practice, a sole proprietor, or a mixed-income earner. This includes:

• Freelancers earning from local or foreign clients
• Online sellers on Shopee, Lazada, TikTok Shop, or Facebook
• Sari-sari store owners and carinderia operators
• Doctors, lawyers, architects, and other professionals in private practice
• Real estate agents and brokers earning commission income
• Content creators and social media influencers
• Home-based food sellers and cottage industry operators

Good news: if you had zero gross receipts from July to September 2026, you still need to file. A zero return filed on time avoids any penalty. A zero return filed late still triggers a compromise penalty.

Complete October BIR Deadlines Table

Use this table as your reference for the Q3 tax filing Philippines season. Verify the latest deadline with the BIR website or ask BB for the most current information, since dates can shift due to holidays or BIR memoranda.

Obligation	BIR Form	Deadline	Who Files
Q3 Percentage Tax (Jul to Sep 2026)	Form 2551Q	October 25, 2026	Non-VAT taxpayers under graduated option
Q3 Income Tax (Jul to Sep 2026)	Form 1701Q	November 15, 2026	All self-employed and mixed-income earners
Monthly VAT Declaration (Sep 2026)	Form 2550M	October 20, 2026	VAT-registered taxpayers
Monthly Withholding Tax (Sep 2026)	Form 1601-C	October 15, 2026	Employers with employees

How to Compute What You Owe

Before you file, you need to know exactly how much you owe for Q3. Here is how to compute both returns.

Form 2551Q: Percentage Tax Computation

Add up every peso you collected from clients or customers from July 1 to September 30, 2026. This is your gross receipts for the quarter. Multiply that total by 3%.

For example, if your gross receipts for Q3 were PHP 150,000, your Percentage Tax due is PHP 4,500.

Form 1701Q: Income Tax Computation

Under the 8% flat tax option, your quarterly income tax is based on your cumulative gross receipts from January 1 to September 30, 2026, minus the PHP 250,000 annual exemption, multiplied by 8%, minus the quarterly payments you already made for Q1 and Q2.

Under the graduated option, compute your net income (gross receipts minus deductions), apply the tax table, and subtract your Q1 and Q2 tax payments already made.

How to File Your Q3 Returns

You can file both returns electronically through eBIRForms, the free offline filing software available on the BIR website, or manually at your RDO (Revenue District Office, your assigned local BIR branch).

1. Download eBIRForms from the BIR eBIRForms page if you have not already installed it.
2. Open Form 2551Q and fill in your TIN, RDO code, taxable quarter (Q3 2026), gross receipts, and computed tax due.
3. Submit Form 2551Q electronically and save your confirmation. Then pay the amount due through GCash or your bank before October 25, 2026.
4. Open Form 1701Q and fill in your Q3 income details, cumulative income, deductions or standard deduction, prior quarter payments, and any Form 2307 credits.
5. Submit Form 1701Q and pay any balance due before November 15, 2026.

How to Pay via GCash

You can pay both Q3 returns through GCash without going to a bank. Here is the exact process for each.

1. Open the GCash app and tap “Pay Bills.”
2. Search for “BIR” under the Government category.
3. For Form 2551Q: Select Form 2551Q, enter your TIN and RDO code, select PT as your Tax Type Code, set Return Period to September 30, 2026, and enter your computed amount.
4. For Form 1701Q: Select Form 1701Q, enter your TIN and RDO code, select IT as your Tax Type Code, set Return Period to September 30, 2026, and enter your balance due.
5. Review the summary screen carefully before confirming each payment.
6. Confirm with your MPIN and screenshot the confirmation page for each payment as your proof.

Common Mistakes to Avoid

1. Confusing the two Q3 deadlines. October 25 is for Percentage Tax (Form 2551Q). November 15 is for Income Tax (Form 1701Q). Missing one while paying the other does not cancel the penalty on the missed return.
2. Filing Form 2551Q when you are on the 8% flat tax option. If you elected the 8% flat tax at the start of 2026, Percentage Tax is already included in your rate. Do not file Form 2551Q on top of it.
3. Skipping the filing because your Q3 income was low or zero. Every registered tax type requires a return, even a zero return, filed on time. A late or missing zero return triggers a compromise penalty.
4. Waiting until October 25 to start your computation. If you discover an error in your gross receipts total on the deadline day, you have no time to correct it. Start computing at least a week before each deadline.
5. Forgetting to collect Form 2307 from clients before filing Form 1701Q. These certificates reduce your income tax payable. Filing without them means you may overpay and have to carry over or claim a refund later.

Real Example: Jun’s Q3 Filing in Batangas

Jun is a freelance web developer based in Batangas City. He earns around PHP 70,000 per month from two long-term clients, one local and one based in Australia.

His Q3 2026 gross receipts (July to September) totaled PHP 210,000. Under the graduated tax option, his Percentage Tax for Q3 was PHP 6,300, computed at 3% of PHP 210,000, due October 25, 2026.

His local client withheld 8% from his quarterly billing of PHP 90,000, giving him a Form 2307 credit of PHP 7,200 for Q3. When he filed his Form 1701Q, he applied this credit against his computed quarterly income tax, reducing his actual cash payment significantly.

He set a reminder on October 18 to start his computation and filed both returns through eBIRForms by October 22, three days before the first deadline. He paid both through GCash the same day he filed, screenshotted both confirmations, and saved them in a folder labeled “BIR 2026 Q3.”

Final Thoughts

The BIR Q3 deadline Philippines October 2026 is manageable if you act early. Pull your gross receipts total for July to September, collect your Form 2307 certificates, compute what you owe for both forms, and file before October 25 for Percentage Tax and November 15 for Income Tax.

The worst outcome is a last-minute rush that leads to errors or a missed deadline. Mark both dates on your calendar now and start your computation at least a week before October 25. For the full year-round deadline schedule, check our BIR deadline calendar. And if you want to make sure you never miss another deadline, our guide on how to avoid penalties covers the habits that keep your record clean all year. BB is also available 24/7 to remind you, answer your questions, and help you compute your Q3 taxes in English or Filipino.

Disclaimer: This guide is for informational purposes only and does not constitute legal or accounting advice. For complex tax situations, consult a licensed CPA.