Contact Us


The Dept. of Revenue and Taxation has completed refunding error free tax returns FILED on or before

October 29, 2018

For inquiries please contact 635-1840 or email the Income Tax Assistance and Processing Branch.

The Latest

Read the most recent Public Notices posted by the Guam Department of Revenue and Taxation.

How do I file for an income tax extension?

Click here for extension information (requires registration/login).

What is my RPT balance due?

Click here to retrieve your Real Property Tax account balance.


Individual Online Services

Login here to use our Individual Online Services.

  • E-file your 1040
  • Renew Vehicle Registration