Get a GST/HST access code – File your GST/HST return

The GST/HST access code is a 4-digit code required for some GST/HST filing methods. It is a personal security key that authenticates you when you are not signed into a CRA account. You should not give your access code to anyone unauthorized.

Your GST/HST access code stays the same for every filing period unless you change it.

Filing without an access code

You do not need an access code if you are filing:

When you need an access code

You do need an access code only if you are filing:

A representative that is legally authorized to sign the paper copy of your GST/HST return may use your access code to file your return if they are using a method that requires an access code.

How to get or change an access code

If you are a non-resident, we send you an access code by mail when you register for the GST/HST. You will also get an access code if you receive your GST/HST filing package by mail. This access code is located near the top of the letter in a box.

You can get a new access code online or by phone.

  • Online
    • If you lose or forget your access code
    • If you want to change your access code for other reasons
  • By phone
    • If you are a new GST/HST registrant and have not received an access code
    • If you want to change an existing access code and cannot do it online
 Online
  1. Visit GST/HST access code online
  2. Enter your business number
  3. Enter information from a return you filed for a reporting period ending within the last 3 years, either:
    • The reporting period and line 109 (net tax), if the amount on line 109 is not $0.00
    • The reporting period and confirmation number, if you filed the return electronically
  4. Enter the new access code you want
  5. Use your new access code to file all future GST/HST returns
 By phone

If you have never received an access code, call us:

  • In Canada or the United States: 1-800-959-5525
  • In Yukon, Northwest Territories or Nunavut only: 1-866-841-1876
  • Outside Canada or the United States, call us collect: 613-940-8497

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