The BIR eAFS deadline for attachments to a first-quarter income tax return depends on the return being filed. For BIR Form 1701Q, the first-quarter return was due on May 15, 2026, and the practical eAFS attachment deadline was June 1, 2026, because the fifteenth day fell on Saturday, May 30. For a calendar-year corporation filing BIR Form 1702Q, the return’s statutory sixtieth-day deadline also fell on May 30, 2026 and moved to June 1, 2026; attachments filed within 15 days from that adjusted filing deadline were due on June 16, 2026. These dates assume that no special BIR extension applied to the taxpayer’s location or circumstances. (Bir Cdn)

First-Quarter BIR Deadlines at a Glance

Taxpayer and return	Period covered	Return filing and payment deadline	Practical eAFS attachment deadline
Self-employed individual, professional, sole proprietor, mixed-income earner, estate, or trust filing BIR Form 1701Q	January 1 to March 31, 2026	May 15, 2026	June 1, 2026
Calendar-year corporation or other covered non-individual taxpayer filing BIR Form 1702Q	January 1 to March 31, 2026	June 1, 2026 after weekend adjustment	June 16, 2026
Fiscal-year corporation filing BIR Form 1702Q	First three months of its fiscal year	Within 60 days after the quarter closes	Within 15 days from the filing deadline or actual electronic filing, whichever is later

The June 1 deadline for an individual’s attachments is calculated as follows:

The first-quarter 1701Q deadline was Friday, May 15, 2026.
Fifteen calendar days later was Saturday, May 30, 2026.
Under the BIR tax calendar rule, a deadline falling on a weekend, holiday, or non-working day moves to the next working day.
The next working day was Monday, June 1, 2026. (Bir Cdn)

For a calendar-year corporation, the calculation is different:

The first quarter ended on March 31, 2026.
Under Section 77 of the National Internal Revenue Code, as amended by Republic Act No. 11976, BIR Form 1702Q must be filed within 60 days after the quarter closes.
The sixtieth day was Saturday, May 30, 2026.
The filing deadline therefore moved to Monday, June 1, 2026.
Fifteen days from June 1 was Tuesday, June 16, 2026. (Lawphil)

What Is the BIR eAFS System?

The Electronic Audited Financial Statements system, commonly called eAFS, is a BIR web-based facility for electronically submitting income tax return attachments in PDF format. Despite its name, it is not used only for audited financial statements. It can also accept copies of filed income tax returns, withholding tax certificates, proof of payment, tax credit documents, and other required attachments. (Bureau of Internal Revenue)

The official system can be accessed through the BIR eAFS portal or from the BIR eServices page.

eAFS is not the system used to file the tax return itself

Three separate electronic processes are often confused:

System	Main purpose
eBIRForms, eFPS, or an authorized tax software provider	Filing the actual 1701Q or 1702Q return
BIR payment channels	Paying the income tax due
eAFS	Uploading PDF copies of the filed return and applicable attachments
eSubmission	Transmitting data files such as the Summary Alphalist of Withholding Agents of Income Payments Subjected to Withholding Tax at Source, or SAWT

Uploading documents to eAFS does not replace filing BIR Form 1701Q or 1702Q. Conversely, successfully filing the return through eBIRForms or eFPS does not automatically mean that its supporting attachments have been submitted. (Bir Cdn)

Who Must File a First-Quarter Income Tax Return?

Individuals filing BIR Form 1701Q

BIR Form 1701Q is generally filed by individuals, estates, and trusts earning income from trade, business, or the practice of a profession. Common examples include:

Freelancers and independent contractors
Online sellers and content creators
Doctors, lawyers, accountants, engineers, architects, and consultants in private practice
Sole proprietors
Insurance agents and real estate brokers treated as self-employed taxpayers
Mixed-income earners who receive both compensation and business or professional income
Estates and trusts engaged in taxable business activities
Resident aliens and certain nonresident aliens engaged in trade or business in the Philippines

The first-quarter 1701Q covers income earned from January 1 through March 31, 2026. Its filing deadline was May 15, 2026. (Bir Cdn)

A person earning purely compensation income from an employer ordinarily does not file 1701Q. The employer normally withholds the employee’s income tax and issues BIR Form 2316. However, an employee with a side business, freelance practice, online shop, or other self-employment income may be a mixed-income earner required to file 1701Q.

A return may still be required even when:

The business had no income during the quarter;
Operations temporarily stopped but the BIR registration remained active;
Tax credits reduced the payable amount to zero; or
The taxpayer incurred a loss.

A “no payment” return is not necessarily the same as “no filing obligation.”

Corporations filing BIR Form 1702Q

BIR Form 1702Q is generally used by domestic corporations, resident foreign corporations, taxable partnerships, and other non-individual taxpayers subject to quarterly corporate income tax.

Section 77 of the Tax Code, as amended by the Ease of Paying Taxes Act or Republic Act No. 11976 of 2024, requires the quarterly corporate income tax return to be filed within 60 days following the close of each of the first three quarters of the taxable year. Tax due must be paid when the return is filed. (Lawphil)

A corporation using a fiscal year must not automatically follow the June 1 date. For example, if its first fiscal quarter ended on April 30, its 1702Q deadline would be calculated 60 days from April 30, subject to weekend, holiday, and officially announced extension rules.

Legal Basis for Submitting Quarterly ITR Attachments Through eAFS

Several BIR issuances work together:

Republic Act No. 11976, approved in 2024, amended the Tax Code through the Ease of Paying Taxes Act and reinforced electronic filing, payment, and administrative simplification.
Revenue Memorandum Circular No. 49-2020 introduced eAFS as an electronic option for submitting income tax return attachments.
Revenue Memorandum Circular No. 82-2020 expanded eAFS coverage to fiscal-year taxpayers and attachments to quarterly income tax returns.
Revenue Memorandum Circular No. 4-2021 clarified the treatment of attachments for electronically filed returns, including withholding tax certificates and SAWT.
Current BIR filing guidance applies a period of 15 days from the filing deadline or the actual electronic filing date, whichever is later, for applicable attachments. (Bir Cdn)

The full statutory amendments may be reviewed in Republic Act No. 11976 on Lawphil. The BIR’s electronic-document rules are available in RMC No. 4-2021.

Does Every 1701Q or 1702Q Filer Need to Use eAFS?

Not necessarily.

A taxpayer who electronically filed a return and has no required attachment generally does not need to print and upload the return merely to obtain an eAFS receipt. The need for eAFS usually arises when the taxpayer must support an amount, credit, exemption, special tax rate, or payment reflected in the return. (Bir Cdn)

Common reasons for an eAFS submission include:

Creditable withholding tax claimed using BIR Form 2307
Tax credits supported by certificates or tax debit memoranda
Proof of prior payments not automatically reflected in the return
Certificates supporting treaty relief or a preferential tax rate
Other documentary attachments expressly required by the form or a BIR issuance

Quarterly returns normally do not require audited financial statements

The “AFS” in eAFS causes many taxpayers to assume that audited financial statements must be uploaded every quarter. That is generally incorrect.

BIR Form 1702Q identifies supporting documents such as withholding tax certificates, tax debit memoranda, treaty-relief certificates, SAWT, and proof of other tax payments. Audited financial statements are generally associated with the annual income tax return, not an ordinary quarterly 1702Q filing.

A taxpayer should therefore upload only documents that are applicable. Adding unnecessary documents can create inconsistencies and make future BIR verification more difficult.

Documents Commonly Needed for First-Quarter eAFS Submission

The exact documents depend on what was declared or claimed in the return.

Document	When it is commonly required
Filed BIR Form 1701Q or 1702Q, or electronic filing confirmation	To identify the return covered by the submission
Filing Reference Number or Tax Return Receipt Confirmation	For returns filed through eFPS or eBIRForms
Proof of payment	When tax was paid through an authorized bank, electronic gateway, or Revenue Collection Officer
BIR Form 2307	When claiming creditable income tax withheld by clients or customers
SAWT validation report	When claiming withholding tax credits
Tax Debit Memo	When applying a tax credit certificate or tax debit
Certificate supporting treaty relief or preferential treatment	When a special rate or treaty benefit is claimed
Other schedules or proof of prior payments	When relevant to an entry in the quarterly return

For withholding tax credits, the supporting process usually has two parts:

The SAWT data file is transmitted through the BIR eSubmission facility.
The applicable PDF documents, such as BIR Forms 2307 and the SAWT validation result, are retained and submitted through the appropriate attachment channel.

A taxpayer should not treat a PDF upload to eAFS as a substitute for transmitting a required SAWT data file. (Bir Cdn)

Step-by-Step Guide to Filing the Q1 Return and eAFS Attachments

1. Confirm the correct return and accounting period

Determine whether the taxpayer must file:

BIR Form 1701Q as an individual, estate, or trust; or
BIR Form 1702Q as a corporation or other covered non-individual taxpayer.

Corporations should check whether they use a calendar year or fiscal year before calculating the deadline.

2. Reconcile the quarter’s income records

Before preparing the return, compare:

Sales invoices and official transaction records
Books of accounts
Bank and electronic-wallet receipts
Client payment statements
Withholding tax certificates
Prior-quarter tax credits and payments

For freelancers and service providers, a frequent problem is that the income shown on BIR Forms 2307 does not match the income declared in the books and return. The gross income corresponding to the withholding certificate should be properly reported; the 2307 is evidence of tax withheld, not a replacement for recording the related income.

3. Collect BIR Forms 2307 early

Do not wait until the filing date to ask clients for withholding certificates.

Check every certificate for:

Correct taxpayer name
Correct nine-digit TIN and branch code
Correct quarter
Correct income payment
Correct withholding tax amount
Signature or proper electronic issuance
Consistency with the taxpayer’s invoices and books

A certificate issued to the wrong TIN may be questioned or rejected as support for the tax credit.

4. Prepare and validate the SAWT

When creditable withholding taxes are claimed, prepare the SAWT using the applicable BIR data-entry or tax software facility. Transmit the file through eSubmission and retain the validation or confirmation message.

Resolve validation errors before the eAFS deadline. Typical errors involve an invalid TIN, incorrect return period, duplicate records, or a file that does not follow the prescribed format.

5. File BIR Form 1701Q or 1702Q

File the return through the platform applicable to the taxpayer, such as:

BIR eBIRForms
eFPS
A BIR-authorized tax software provider

Save copies of:

The final return
Filing Reference Number
Tax Return Receipt Confirmation
Email confirmation
Any error or system advisory encountered during filing

6. Pay the tax due

Use an authorized payment channel and retain the transaction confirmation, validated deposit slip, electronic receipt, or other proof of payment.

Payment and filing are separate acts. A payment receipt does not prove that the return was filed, while a filing confirmation does not necessarily prove that the tax was paid.

7. Convert attachments to valid PDF files

Before uploading, confirm that every file:

Opens correctly;
Is readable at normal magnification;
Is in PDF format;
Is not password-protected;
Uses the required eAFS naming convention;
Does not contain a duplicate extension such as .pdf.pdf; and
Is uploaded under the correct tax year and quarter.

The BIR’s eAFS advisory warns that invalid file formats, improper extensions, and naming errors can cause upload failures. The portal currently accepts PDF files and prescribes system limits for uploads.

Under the quarterly naming convention introduced by RMC No. 82-2020, the filename identifies the taxpayer’s nine-digit TIN, the quarter, the month in which the quarter ended, and the taxable year. Follow the naming format displayed by the current eAFS portal rather than improvising a filename. (PwC)

8. Upload through eAFS

A TIN already associated with an old email address
A username already in use
An inactive registration link
A password-reset email sent to the spam folder
Incorrect branch or registration information

BIR advisories state that activation and password-reset links may expire after 72 hours. Some duplicate-account or TIN problems may require coordination with the taxpayer’s Revenue District Office.

9. Save proof of successful submission

A successful eAFS upload should generate a Transaction Reference Number or Confirmation Receipt. This serves as evidence that the attachments were submitted electronically in place of a manual BIR “Received” stamp. (Bir Cdn)

Save:

The Transaction Reference Number
Confirmation email
Downloaded confirmation receipt
Screenshot of the completed transaction
Copies of the exact PDFs uploaded

Do not rely solely on seeing a progress bar reach 100%. Check the transaction history and confirm that the submission was recorded.

Common eAFS Mistakes That Cause Problems

Confusing the return deadline with the attachment deadline

For an individual, May 15, 2026 was the 1701Q filing deadline—not automatically the final eAFS date. The attachment deadline was calculated separately.

For a corporation, the return and attachment deadlines were also different. A calendar-year corporation’s adjusted 1702Q deadline was June 1, while its 15-day attachment period extended to June 16.

Using the corporate calendar-year deadline for a fiscal-year company

A fiscal-year corporation calculates its 60-day period from the actual end of its first fiscal quarter. The dates applicable to a March 31 quarter do not apply to every corporation.

Uploading documents under the wrong quarter

A first-quarter attachment should not be uploaded as a second-quarter or annual submission. The quarter, ending month, and taxable year in the filename and portal selection must agree.

Claiming withholding credits without complete support

A 2307 alone may not complete the required electronic process when SAWT submission is also required. Missing or mismatched documentation may cause the credit to be disallowed during verification or audit.

Assuming that zero tax due means no filing

A taxpayer can have no tax payable because of a loss, the ₱250,000 threshold applicable in certain individual computations, prior payments, or withholding credits. That does not automatically remove the filing obligation.

Waiting until the last day to create an eAFS account

Account activation, duplicate-email issues, PDF corrections, and failed uploads can take time to resolve. A taxpayer who waits until the final evening may have no practical opportunity to obtain help from the RDO.

What Happens if the Return or eAFS Attachments Are Late?

The consequences depend on what was filed late.

Late return or late payment

A late income tax return or payment may result in:

A civil surcharge;
Interest on the unpaid tax;
Compromise penalties under applicable BIR schedules; and
Possible enforcement or collection action if the liability remains unpaid.

Under the Ease of Paying Taxes Act, taxpayers officially classified as micro or small may qualify for reduced civil penalties, including a 10% surcharge in circumstances where the ordinary surcharge would be 25%, and a reduced interest rate. The classification must be determined under the Tax Code and BIR rules; it should not be assumed merely because the business informally considers itself “small.” (Lawphil)

Return filed on time but attachments submitted late

Late or missing attachments may lead to a separate penalty for failure to submit required information or documents. More importantly, the BIR may question the tax credits, treaty benefits, exemptions, or payments that the missing documents were supposed to support.

For example, if a taxpayer deducted ₱30,000 in creditable withholding tax but cannot substantiate the amount with valid certificates and the required SAWT records, the BIR may disallow the credit and assess additional tax, interest, and penalties.

What to do after missing the eAFS deadline

Complete the missing submission immediately instead of waiting for a BIR notice.
Save proof of the eventual upload.
Preserve evidence of any BIR system outage or official advisory.
Check whether the return or payment itself was also late.
Coordinate with the registered RDO if the portal will no longer accept the submission or if penalty assessment is required.
Keep all original documents available for verification.

Late filing does not become compliant simply because the taxpayer pays a guessed penalty online. The correct penalty and procedure may depend on whether the deficiency involves the return, payment, attachment, or all three.

Special Considerations for Foreigners and Overseas Taxpayers

Nationality does not change the basic eAFS upload process. A foreign taxpayer registered with the BIR generally uses the same portal, PDF requirements, TIN, branch code, and electronic confirmation system as a Filipino taxpayer.

However, the obligation to file a Philippine quarterly income tax return depends on the taxpayer’s status and source of income. A resident alien or nonresident alien engaged in trade or business in the Philippines may have a quarterly filing obligation for taxable business or professional income. Income of a nonresident alien not engaged in Philippine trade or business is often collected through final withholding instead.

Foreign corporations must likewise distinguish between:

A resident foreign corporation doing business through a Philippine branch or taxable presence; and
A nonresident foreign corporation whose Philippine-source income is generally subject to final withholding.

Where a return claims treaty relief, a foreign tax credit, or a special rate, the BIR may require certificates, official foreign records, and supporting documents. Depending on the document and purpose, a foreign public document may need an apostille, consular authentication where the Apostille Convention does not apply, or an English translation. The specific requirement should be checked against the governing treaty, BIR issuance, and transaction involved.

An overseas taxpayer can submit through eAFS as long as the taxpayer has working portal credentials and the necessary electronic documents. The practical difficulty is usually collecting Philippine withholding certificates and correcting registration details from abroad.

Frequently Asked Questions

What was the eAFS deadline for the first-quarter 1701Q in 2026?

The first-quarter 1701Q was due on May 15, 2026. The fifteenth day for attachments fell on Saturday, May 30, so the practical eAFS deadline moved to Monday, June 1, 2026 under the next-working-day rule.

What was the Q1 1702Q deadline for a calendar-year corporation?

The statutory sixtieth day after March 31 was May 30, 2026. Because that date was a Saturday, the practical filing and payment deadline moved to June 1, 2026.

When were the calendar-year corporation’s Q1 1702Q attachments due?

Using the adjusted June 1 filing deadline and the 15-day attachment period, the practical eAFS deadline was June 16, 2026.

Is eAFS the same as eBIRForms?

No. eBIRForms is used to prepare and electronically file the tax return. eAFS is used to upload applicable PDF attachments. Filing in one system does not automatically complete the requirements of the other.

Do I need to use eAFS if I did not claim any tax credit?

Possibly not. If the electronically filed return has no required attachment, BIR guidance generally does not require the taxpayer to print and upload the return merely for stamping. Check the form and the entries made because other attachments may still apply.

Must I upload audited financial statements for 1702Q?

Ordinarily, no. Audited financial statements are generally filed with the annual corporate income tax return. A quarterly 1702Q may instead require documents such as BIR Forms 2307, SAWT records, tax debit memoranda, treaty-relief certificates, or proof of other payments.

Where should I submit the SAWT?

The SAWT data file is normally transmitted through the BIR eSubmission facility. Applicable PDF evidence and the validation result are retained or uploaded through the prescribed attachment channel. Uploading a PDF copy alone does not replace a required SAWT data transmission.

What is accepted as proof of eAFS submission?

The eAFS-generated Transaction Reference Number or Confirmation Receipt is the main proof. Keep the confirmation email, downloaded receipt, transaction screenshot, and exact uploaded PDFs together.

What if I filed the return late?

The attachment period is generally counted from the filing deadline or the actual electronic filing date, whichever is later. This does not excuse the late return: surcharge, interest, and other penalties may still apply to the return and unpaid tax.

Does the June 1 deadline apply to every corporation?

No. It applies to a calendar-year corporation whose first quarter ended March 31, 2026. Fiscal-year corporations calculate the return deadline within 60 days after their own quarter-end date.

Key Takeaways

The first-quarter 1701Q return was due May 15, 2026.
Because the fifteenth day fell on a Saturday, the practical 1701Q eAFS attachment deadline was June 1, 2026.
For a calendar-year corporation, the first-quarter 1702Q filing and payment deadline moved to June 1, 2026.
The practical eAFS deadline for that calendar-year corporation’s attachments was June 16, 2026.
Fiscal-year corporations must calculate deadlines from their actual quarter-end date.
eBIRForms or eFPS files the return; eAFS submits PDF attachments; eSubmission handles data files such as SAWT.
Quarterly returns ordinarily do not require audited financial statements.
Save the Filing Reference Number, payment confirmation, SAWT validation, eAFS Transaction Reference Number, and exact PDFs submitted.
A taxpayer with no required attachments generally does not need an eAFS upload merely to obtain a “Received” copy.
Missing attachments can expose the taxpayer to penalties and may cause withholding tax credits or other claimed benefits to be disallowed.