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Government of Canada / Gouvernement du Canada

Need a Digital Access Code?

Digital Access Code Online

UHT Digital Access Code Online lets you obtain a system generated Digital Access Code in order to be able to file your Underused Housing Tax return online using the webform. This digital access code is valid for one calendar year (January 1st - December 31st) regardless of when in that year it was obtained.

To obtain a digital access code you will need to enter:

For an individual;
  • Social Insurance Number (SIN) or Individual Tax Number (ITN)
  • First and Last name
  • Date of birth and
  • Postal Code, ZIP code, or Country Code of mailing address
For a Business (BN-RU);
  • Underused Housing Tax account number (BN-RU)
  • Registration Date
  • Name of owner
  • Postal Code, ZIP code, or Country Code of mailing address


The CRA has taken all reasonable steps to ensure the security of this Web site. We have used sophisticated encryption technology and incorporated other procedures to protect your personal information at all times. However, the Internet is a public network and there is the remote possibility of data security violations. In the event of such occurrences, the CRA is not responsible for any damages you may experience as a result.

If you are using an older browser that does not support the latest security standard, you will not be able to access CRA's secure online services.

Please note that your secure session will expire after 35 minutes of inactivity

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