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Online Services Help

Online Services

Click on one of the E-Services below to find out more information about our Online Individual Services.


What are the computer requirements for using the online system?

You must have:

Why do I need to register?

Use of the online system requires that you first create an online account to access your information. The registration process allows you to create your online account so you can use and access this system now and in the future.

How do I register?

Registration is simple. Just go to the registration page of this web site to create your online user account. You will need a valid e-mail address.

If I already have a GuamTax account, can I use the same account to login to MyGuamTax?

No. You need to register for a separate MyGuamTax online account. MyGuamTax was built specifically for e-filing transactions for individual taxpayers.

System Availability

Why does the system time me out if I'm idle?

For security purposes, your session will automatically be timed out if you are idle for more than 15 minutes. To access your account you must login again.

If you are being logged off before the 15-minute timeout period AND you are using Microsoft Internet Explorer, then the problem might be due to an issue with a security patch that Microsoft released and recommended users to install.

To read more about this IE patch problem and how you can correct it, please refer to the support information provided by Microsoft at the following URL:;en-us;831167.

I'm trying to login, but I get the message that the system is unavailable. What does this mean?

If you receive a message that the system is unavailable, it means that a connection cannot be established with our back-end system.There are certain periods in the day when our online system is unavailable due to regular system maintenance. Please see question below for specific downtimes.

When is scheduled system downtime?

The online system is unavailable during routine maintenance periods. Scheduled downtimes are as follows:

  • Monday through Thursday: 5 p.m. to 9 p.m.
  • Daily: 2 a.m. to 6 a.m.
    Times posted are local Guam time (GMT + 10).


Are my transactions secure?

Yes. All pages on the web site are secured by Secure Socket Layer (SSL) technology. This means that information you send to us through this web site is protected via security encryption protocols. From your web browser, you can easily tell if a page is secured by the padlock icon symbol displayed in the lower right corner of the browser window. In addition, you can click on the icon below to verify our SSL certificate authenticity.

For more information about how we use the information you send to us, please review our Privacy Policy.