ID·Tax year 2025 · Filing 2026

Indonesia tax deadlines 2026.

Every individual and self-employed income tax deadline for Indonesia in 2026. Plus recurring VAT / GST / sales tax filings. Each deadline links to notes on how to file, what people miss, and matching open-source tax skills.

Indonesia tax authority

Annual deadlines

1 this year

Mar31

Annual Income Tax Return (SPT Tahunan)

Indonesian annual income tax return (SPT Tahunan) for 2025. Small businesses under PP 55/2022 file a simplified return.

IndonesiaAll residentsSelf-employed

Open-source skills for Indonesia

Prepare this return with open-source skills

These skills are in the OpenAccountants repo. Clone them into Claude, Cursor, or any AI agent and they handle the computation.

indonesia-vat.mdID

Use this skill whenever asked to prepare, review, or classify transactions for an Indonesia VAT (PPN — Pajak Pertambahan Nilai) return (SPT Masa PPN), handle e-Faktur compliance, or advise on PPN registration and filing in Indonesia. Trigger on phrases like "PPN Indonesia", "Pajak Pertambahan Nilai", "SPT Masa PPN", "e-Faktur", "Faktur Pajak", "PKP registration", "Pengusaha Kena Pajak", or any Indonesia PPN request. ALWAYS read this skill before touching any Indonesia PPN work.

Preparing a Indonesia return?

The OpenAccountants repo has verified, open-source tax computation skills. Clone and run them with your AI agent, then get an accountant to review.

View the repo All countries