What's the difference between NPWP and a bank account number for a contractor?

NPWP is the contractor's tax ID (15 digits, issued by the DJP). A bank account is where you send the payment. You need both: NPWP to calculate and report withholding, bank account to deliver the net payment. The DJP report links NPWP to withholding; it doesn't include bank account details.

Do I have to withhold tax if the contractor is in another country?

If the contractor has an Indonesian NPWP and is paid from your Indonesian entity, yes, you must withhold. If they're non-resident and paid from outside Indonesia, different rules apply (consult a tax specialist). Most regional contractor platforms default to withholding if an NPWP is on file; clarify your contractor's tax residency before payment.

What happens if I file the withholding report late?

Late filing incurs penalties: 5% of the withholding amount for each month late (up to 30% total). If you withhold 10M IDR and file 60 days late, you owe at least 1M IDR in penalties, plus interest. File by the 10th of the month following payment.

Can I use an off-the-shelf payroll tool like Guidepoint or Rippling for Indonesian contractors?

These platforms support Indonesia as a payment destination, but most don't automate NPWP withholding calculations or e-Bupot reporting. You'll need to export the data and manage withholding separately, typically with a spreadsheet or a tax consultant. For scalability, either integrate a local tax tool or use a platform with native NPWP logic.

Indonesian Contractor Payroll NPWP