The Official Web Site of the Guam Department of Revenue and Taxation
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Welcome to the Official Guam Department of Revenue and Taxation Web Site
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W-1 E-Filing

Now you can file your Employer's Quarterly Guam Tax Return electronically!


Tax Refund Status

The Department of Revenue and Taxation has refunded all
error free tax returns FILED on or before

February 7, 2014

For inquiries please contact 635-7618 or email the
Income Tax Assistance and Processing Branch.

90-Day Notice of Intent to Deed 2012 Tax Sold Property to the Government of Guam

Pursuant to Chapter 24, Title 11, §24809 Guam Code Annotated, I, JOHN P. CAMACHO, Tax Collector of the Island of Guam, hereby give notice to the owners of the properties listed below, their heirs and their personal representatives, of the intent to execute and record a deed to the Government of Guam. To avoid the issuance of a deed to the Government of Guam, full payment of the tax, including interest and penalties, must be paid no later than July 5, 2014. Thereafter, the parcels will be deeded to the Government of Guam and the Tax Collector may dispose of the property at a public auction or otherwise, as mandated by law. In addition to this publication, the list of affected properties is available for review at every mayor’s office, the Department of Revenue and Taxation, Real Property Tax Division, 1240 Army Drive, Barrigada, and the department’s website at

** NOTICE **

The W-1 online filing is back up and available.

You can once again file your W-1 form (Employer's Quarterly Guam Tax Return) using our online service. We apologize for the disruption and thank you for your patience.

The payment website,, is currently down. DRT apologizes for the inconvenience.

Payments can be made at:

  • Drop Box:
    Department of Revenue and Taxation
    1240 Route 16, Barrigada, Guam
  • Collection Branch, Department of Revenue and Taxation
  • By Mail:
    Department of Revenue and Taxation, P.O. Box 23607 GMF, Guam 96921
  • All Treasurer of Guam locations:
    • ITC Bldg, 1st floor
    • One Stop @ DPW
    • DRT

GRT-3 Form Updated

The GRT-3 Form has been updated as of March 19, 2014.

Get the new form here.

2014 Notice of Annual Intent to Do Business

**Notice to All Insurance Companies**

RFP No. RFP/DRT14-000-01 Proposal Package

Download DRT Forms and Applications

Tax Preparer Registration Renewal Application & Tax Preparer Surety Bond

Gaming Form 3260

2012 Real Property Tax Delinquent List

Pre-Register and Schedule an Appointment Online for Driver’s License

You can now schedule an appointment for most driver’s license and Guam ID transactions at:

Documents relating to the proposed creation of a "Disclosure Officer" position for the Department of Revenue and Taxation

2012 1040EZ E-Filing

Go to MyGuamTax to register for an online account or login now.

Updated Non-Profit Listing

ID Number:
(e.g. EIN or SSN)
Access Code:

(5-digit code)
Forgot your code?
You are using an Official Government of Guam System, which may be used only for authorized purposes. Unauthorized modification of any information stored on this system may result in criminal prosecution. The Government of Guam may monitor and audit the usage of this system, and all persons are hereby notified that the use of this system constitutes consent to such monitoring and auditing. Unauthorized attempts to upload information and/or change information on this web site are strictly prohibited and are subject to prosecution under the Computer Fraud and Abuse Act of 1986, Title 18 U.S.C. Sec. 1001 and 1030, and other criminal and civil laws as applicable under the Territory of Guam.


Effective Monday, March 23, 2009, the Department of Revenue and Taxation's hours of operation will be:

8 am to 5 pm
Monday - Friday
excluding holidays

New Rules for Contractors and Subcontractors

Posted Feb. 2011

GRT Forms

Beginning February 1, 2009, taxpayers who file their GRTs manually
must use the new GRT forms.

NOTE: If you E-File, this change does not affect you. Registration  


Businesses can register for a GuamTax account online. You'll need:

  • Your GRT account number
  • Company EIN or SSN
  • A valid e-mail address.

Register Now


Special service entities must submit a signed registration form to access specialized online services on

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  • Internet access
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