Latest Common Questions

Indonesia is undergoing one of the most significant tax transformations in Southeast Asia. As of 2026, the digital-first CoreTax Administration System (CTAS) is fully operational, marking the end of the traditional 15-digit NPWP. The key to this new era is the Single Identity Number (SIN), which integrates personal identity with tax data. Whether you are managing a PT PMA (Foreign Investment Company) or navigating individual compliance, the transition to the 16-digit format is now a mandatory reality for all transactions, including VAT and customs.
This FAQ guide provides the grounded, expert insights you need to master Indonesian tax identifiers in the 2026 digital era.
Businesses that make the smart choice to use TaxDo’s GTL (Global TIN Lookup) connect instantly to the Directorate General of Taxes (DJP) and OSS registries, ensuring 100% accuracy in NPWP and NIB validation for the 2026 CoreTax mandate.