The tax season can be a stressful period, especially when financial audits are dragging on or your employer hasn't issued the necessary paperwork. Fortunately, Indonesian tax regulations provide a ‘safety valve’. According to the Director General of Taxes Regulation No. PER-3/PJ/2026, taxpayers can legally extend their filing deadline.

If you find yourself racing against the clock, here is everything you need to know about securing an extension for your annual Income Tax Return (SPT Tahunan).

Understanding the standard deadlines
Before looking at extensions, it is vital to remember the original ‘finish line’ for your tax reporting:

• Individual Taxpayers: 3 months after the end of the tax year (typically 31 March)
• Corporate Taxpayers: 4 months after the end of the tax year (typically 30 April).

By submitting a formal notification, you can extend these deadlines by up to 2 months.

Who is eligible for an extension?
An extension isn't granted automatically, it is designed for taxpayers facing specific hurdles:

1. Individual Taxpayer as a Business Owners/Professionals: Those who have not yet finalised their financial statements.
2. Individual Taxpayer as Employees: Individuals who haven't received their PPh Pasal 21 withholding slips from their employers.
3. Corporate Taxpayer: Companies whose financial statements are incomplete or are still undergoing an external audit by a Public Accountant

The paperwork: what you need to prepare
You must submit a notification (via Coretax DJP, mail or in person) before your original deadline expires. The notification must be signed by the taxpayer, a representative or a proxy. Depending on your category, you must attach:

For Individual Taxpayer and Corpore Taxpayer:

• Temporary Tax Calculations: An estimate of the tax owed for the year.
• Temporary PPh Article 26(4) Calculation: Specifically for Permanent Establishments (BUT).
• Temporary Financial Statements: Required for An SSP (Surat Setoran Pajak) or equivalent those with unfinished reports.
• Proof of Payment: if there is an underpayment.
• Audit Statement: A letter from a Public Accountant if the audit is still in programme.

For Individuals Waiting on Withholding Slips:

• Temporary Tax Calculations.
• Proof of Payment (SSP) for any tax underpayment.
• Employer Statement: A letter stating that the PPh Pasal 21 withholding slip has not yet been provided.

How BDO can help you
Navigating the transition to the new Coretax DJP system while managing temporary financial statements can be complex. Our team of tax professionals is here to ensure your extension is filed accurately and on time, preventing unnecessary administrative sanctions.

We can assist you in:
•    Drafting temporary calculations: Ensuring your estimated tax payment is accurate to avoid future penalties
•    Managing documentation: Preparing the required statement letters and coordinating with your auditors.

Don't wait until the last day. While an extension gives you breathing room, the notification must be authorised and processed before the original March or April deadline passes.
Ready to secure your tax extension? Contact our experts today to get started.

Irwan Kusumanto <ikusumanto@bdo.co.id>
Suwenny Leonardi <sleonardi@bdo.co.id>
Octa Surya Fatra <ofatra@bdo.co.id>

Source: Director General of Taxes Regulation No. PER-3/PJ/2026.