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
error free tax returns FILED on or before

October 7, 2015

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


Attention to All E-Filers who decide on making their tax payments in person (not electronically):

  • Please proceed to make payment to any Treasurer of Guam location, and
  • Provide two (2) copies of the e-filed returns.

As a reminder, Collections Branch at the Department of Revenue and Taxation will no longer accept payments on e-filed tax accounts.


"New statements required for tax year 2015"

For more information go to the link below:

New Information Statements to be Filed in 2016



The Department of Revenue and Taxation hereby announces that the deadline for appeals to the Board of Equalization of the 2014 and 2015 real property tax assessments are extended until December 31, 2015. The application form is readily available at the Real Property Tax Division office or you may complete and print the form from the Departmentís website at, forms and publications, under Real Property Tax Division, Application for Board of Equalization. For all property tax assessment matters, please contact the office at 635-1768 or 635-1763 or via email to;;


Avoid the crowds and waiting in line...and file your 1040EZ online. Just visit our website at

Follow the instructions and get started!!! It's easy and convenient!!!


TAX YEAR 2014 1040, 1040A Tax Forms Available!

Our 2014 Guam Income Tax Forms are now available at


2015 Real Property Tax Final Assessment Roll

2014 Real Property Tax
Delinquency and Notice of Impending Tax Sale

Online Payments are back!

Our payment website is back online. Please visit and register now to be able to pay your real property tax, income tax, gross receipts tax, and several other tax obligations.

If you have any questions or need assistance, please contact Colleen Meno at or at (671) 635-1809.

2014 Real Property Tax Final Assessment Roll

Real Property Tax Division

2014 Tax Year Real Property Tax Notices

Announcement of Available Online Services here at

The Department of Revenue and Taxation is pleased to announce that the following online services are now available:

  • GRT
    • Option to file now and pay at a later date
    • The amount that appears as owed does not include penalties and interest if they apply. You must contact the departmentís Collection Branch at (671) 635-1865/1869 for the applied amount.
    • For inquiries about your return, please contact Barbara Lanada at (671) 635-1836.
    • For inquiries about penalties and interest applied, please contact Stella San Nicolas at (671) 635-7611.

  • Withholding Tax Quarterly Returns (Form W-1)
    • Option to file return or file return and make payment at the same time.
    • Returns filed online but not paid when filed must be paid in-person at the Treasurer of Guam or DRT Collections. You cannot return to a previously filed return and make a payment online.
    • For inquiries about your return, please contact Antonette Donato at (671) 635-1840.

  • Business License Renewals
    • Renewal process must be completed and payment processed in order to print a copy of your renewed business license.
    • For inquiries about your business license, please contact George Cruz at (671) 635-1829.

  • Vehicle Registration Renewals (Available on
    • Renewal process must be completed and payment processed in order to print a copy of your renewed registration.
    • Tags will be mailed out as soon as insurance and inspection receipts have been verified.
    • For inquiries about your registration, please contact Steve Aguon at (671) 635-1886.

To take advantage of these online services, please register if you are a new applicant or log-in if you have an existing Guam Tax account. If you have any questions or concerns with the registration process or online filing process, please visit our FAQ page or contact Colleen Meno at or at (671) 635-1809.

Alternative payment locations:

  • 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

PUBLIC ANNOUNCEMENT : 2015 Tax Season Opening

Guam's Department of Revenue and Taxation (GDRT) announces that the upcoming 2015 tax season will officially open on January 2, 2015. Individual Income tax filing, for tax year 2014, will be accepted on and after this date (January 2, 2015) any earlier filing to the date prescribed will be rejected by GDRT staff. The purpose of this firm date will ensure that all tax changes are programmed, tested and validated.

ITAPB (A-01)

Updated Non-Profit Listing

Non-Profit Listing (Tax Exemptions and Farmer's Exemption
Updated 09/09/2014

New Email Accounts:

Need to contact us? Here is a list of our new email addresses.

DRT Real Property Tax Division Public Notice:

2013 Real Property Tax Delinquency and Notice of Impending Tax Sale

GRT-1 Form Updated

The GRT-1 Form has been updated as of June 1, 2014.

Get the new form here.

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

Pursuant to Chapter 24, Title 11, ß24809 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 mayorís office, the Department of Revenue and Taxation, Real Property Tax Division, 1240 Army Drive, Barrigada, and the departmentís 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.

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

2013 1040EZ E-Filing

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

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

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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.


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excluding holidays

Guam ID
Hours of Operation

8 am to 12 pm (Noon)
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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