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Tax Glossary
TER (Effective Average Rate)
TER (Tarif Efektif Rata-rata / Effective Average Rate) is the method for calculating PPh Article 21 withholding effective January 1, 2024 under Ministry of Finance Regulation No. 168/PMK.03/2023. TER replaces the more complex monthly progressive rate method with a simpler, more transparent calculation. There are two types of TER: (1) Monthly TER, used for January through November of each year, (2) Annual TER (using Article 17 para. 1 rate), used for December as the final tax settlement for the year. TER is divided into three categories based on the taxpayer's PTKP (non-taxable income) status: Category A: Single with TK/0, TK/1, or Married K/0 (basic/entry status), Category B: TK/2, TK/3, Married K/1, or K/2 (intermediate status), Category C: Married K/3 (highest status). The complete TER table with detailed rates for each income range is in the Annex to PMK 168/2023. Each month, withholding agents use this table to calculate PPh 21 based on salary level and employee PTKP status.
Tax Guides
PPh 21 Guide 2026: Calculation, TER Rates, and Worked Examples
A practical guide to calculating Indonesian income tax (PPh Article 21) for permanent employees in 2026 using the Average Effective Rate (TER) under PP 58/2023.
Tax Glossary
Article 21 Income Tax (PPh 21)
PPh Article 21 is the income tax on wages, salaries, honoraria, allowances, and other payments received by individual residents in connection with work, employment, services, or activities (Article 21 para. 1, Income Tax Law). Governed by Article 21 of Law No. 36/2008 on Income Tax (UU PPh) and Ministry of Finance Regulation No. 168/PMK.03/2023. Effective January 1, 2024, withholding uses the Effective Average Rate (TER) method, which is simpler than the previous progressive rate method. The withholding agent (usually the employer, treasurer, or payment maker) is obligated to: (1) Calculate and withhold PPh 21 from each income payment, (2) Remit to the state treasury by the 10th of the following month (Article 21 para. 11, UU PPh), (3) File the monthly tax return by the 20th of the following month (Article 21 para. 12, UU PPh), (4) Issue Form 1721-A1 (withholding certificate) by end of January of the following year. The TER rate depends on the taxpayer's PTKP status (TK, K, K/I) and income level, ranging from 0% to 30% progressively per category.
Tax Guides
Tax Guide for Private Sector Employees in Indonesia
Private sector employees in Indonesia are subject to PPh 21 (income tax) withheld monthly by their employer using the Effective Average Rate (TER) system, effective January 2024 under PMK 168/2023. At year-end, employers issue a 1721-A1 withholding certificate used to file the annual personal income tax return.
Tax Guides
Tax Guide for Programmers and Developers in Indonesia
Programmers and developers in Indonesia face two main tax scenarios: as a permanent employee (PPh 21 withheld monthly by the employer via TER) or as a freelancer (PPh 21 as expert worker with a 50% taxable base). Income from app marketplaces, international freelance platforms, and software licences carries separate tax obligations.
Tax Guides
Tax Guide for Teachers and Lecturers in Indonesia
Teachers and lecturers are typically taxed as employees under PPh 21. Government teachers (PNS) are subject to Article 21 withholding by their institution, while private school and university lecturers follow TER-based withholding under PMK 168/2023.
Tax Guides
Tax Guide for Civil Servants (PNS/ASN) in Indonesia
Indonesian civil servants (PNS/ASN) have their PPh 21 calculated and withheld by their government work unit (satker) using the TER method under PMK 168/2023. Salary, allowances, and year-end bonus (THR) are all subject to withholding.
Tax Guides
PPh 21 DTP 2026 Guide: Eligible Sectors, Criteria, and How to Claim
The PPh 21 Borne by Government incentive runs through 2026 for employees in labor-intensive industries and tourism earning up to IDR 10 million per month. This guide covers eligible sectors, employee criteria, and employer reporting steps.
Tax Guides
Tax Guide for Accountants in Indonesia
Accountants in Indonesia are taxed as employees when working for a firm or as independent professionals when operating a private practice. Public accountants (CPA) offering attest services must register with IAPI and comply with additional reporting obligations.
Tax Guides
Tax Guide for Doctors in Indonesia
Doctors in Indonesia face different tax obligations depending on whether they practice at a hospital as an employee, run an independent clinic, or do both. PPh 21 applies to hospital salaries; independent income is subject to PPh 25/29.