March is one of the busiest months in the Indonesian tax calendar! Several critical deadlines converge, including the main one—submitting the annual individual tax return. Missing deadlines risks fines, so let’s go through all the dates in order.
Important: Public Holidays in March
Before looking at the dates, keep in mind that March 2026 has many public holidays. Due to this, some operations (especially banking) might be affected. Plan everything in advance!
March 18: Joint leave (Cuti Bersama) before Nyepi.
March 19: Nyepi Day of Silence (Hari Raya Nyepi).
March 20, 23, 24: Joint leave for Idul Fitri.
March 21–22: Idul Fitri (Hari Raya Idul Fitri) — one of the main Muslim holidays.
Complete List of Tax Deadlines for March 2026
Here are all the key dates to mark in your calendar:
🗓️ March 2 (Monday)
What to do: Pay and report VAT (PPN) for January 2026.
For whom: For all entrepreneurs who are VAT taxpayers.
🗓️ March 16 (Monday)
What to do: Pay income taxes for February 2026:
PPh Pasal 21 (Tax on income in the form of salaries, honorariums, allowances, and other payments received by individuals within the country in connection with work or services).
PPh Unifikasi (Unified tax on income from certain activities).
PPh Pasal 25 (Monthly advance payments of corporate income tax).
For whom: For companies and entrepreneurs paying salaries and/or income covered under the relevant articles of the Income Tax Law (UU PPh).
🗓️ March 20 (Friday)
What to do: Upload sales invoices (Faktur Pajak Keluaran) for February 2026 into the Coretax system.
For whom: For all entrepreneurs who are VAT taxpayers (PKP).
🗓️ March 25 (Wednesday)
What to do: Submit monthly tax returns (SPT Masa) for February 2026:
SPT Masa PPh Pasal 21.
SPT Masa PPh Unifikasi.
For whom: For companies and entrepreneurs who paid salaries and/or income covered under the relevant articles of the Income Tax Law (UU PPh).
🗓️ March 31 (Tuesday) — CRITICAL DATE! 🔴
This is the most important day of the month. Everything needs to be done at once:
Pay and report VAT (PPN) for February 2026.
❗ Submit the Annual Individual Tax Return (SPT Tahunan Orang Pribadi) for the 2025 tax year.
This applies to all individuals who have an NPWP (Taxpayer Identification Number).
Fine for late submission: Rp 100,000 (Indonesian Rupiah).
Deadline for notifying the use of NPPN (Norma Penghitungan Penghasilan Neto) for the 2026 tax year.
5 Golden Rules for a Stress-Free March
1. Stay ahead. Don’t wait for the last day! Due to the holidays (March 20-24), the final week will be very short. It’s best to submit your annual return in the middle of the month when the systems are faster.
2. Use reminders. Add all these dates to your Google Calendar.
3. Prepare for Coretax load. During peak days before deadlines, the Coretax system and old DJP services might run slower or experience glitches. Factor this into your time.
4. Keep your documents ready. Make sure you have all the data needed for calculating PPh 21, PPh 25, and most importantly, for filling out the annual return (data on income, assets, tax deductions).
5. Save your confirmations. After submitting any report, always save the electronic receipt (BPE — Bukti Penerimaan Elektronik). This is your insurance in case of future tax disputes.
March is a busy month. If you need support, the YARD Financial Solutions team is always here to help with your reporting and ensure everything is done on time.
