The Official Web Site of the Guam Department of Revenue and Taxation
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  GUAM DEPARTMENT OF REVENUE AND TAXATION Dipattamenton Kontribusion yan Adu'ana  
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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
a portion of error free tax returns FILED on or before

February 11, 2016

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

2015 Real Property Tax Delinquent List

Click here to view the 2015 Real Property Tax Delinquent List.

Taxpayer's have an extra day to file!!

The due date to file your 2015 tax return is April 18, 2016,
instead of April 15, 2016, because of the Emancipation Day Holiday.



Announcement 2016-01 to affect tax form 1095 requirements.

For more information go to the link below:

Announcement 2016-01


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.

2016 Renewal of Certificate of Authority Notice

2016 New Requirements for Tax Preparers


In accordance with §24114 and §24612 Chapter 24, Title 11, Guam Code Annotated, Notice is hereby give for the following tax credits / exemptions offered by the Government of Guam for eligible homeowners and qualified applicants effective Tax Year 2016 and the date of payment.

Deadline to submit tax credit and exemption application is March 15, 2016. If you have already applied, you do not need to resubmit an application.

Click here for more information.


"New statements required for tax year 2015"

For more information go to the link below:

New Information Statements to be Filed in 2016



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!!!


1040/1040A/1040EZ Tax Forms Available!

Our 2015 Guam Income Tax Forms are now available at


2015 Real Property Tax Final Assessment Roll

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 the PIN Admin at or at (671) 635-1809.

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 the PIN Admin 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 08/29/2016

New Email Accounts:

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

GRT-1 Form Updated

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

Get the new form here.

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

Download DRT Forms and Applications

Gaming Form 3260

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:

2013 1040EZ E-Filing

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

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(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.


8 am to 5 pm
Monday - Friday
excluding holidays

Guam ID
Hours of Operation

8 am to 12 pm (Noon)
Monday - Friday

excluding holidays

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

To use the GuamTax online system, you must have:

  • Internet access
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