1) Sign in to your My Business Account – Canada.ca

2) Click on Profile

3) Click on Manage authorized representatives

4) Click on Authorize representative

5) Please input BN# : 133039297

6) Select level 2 access for all program accounts  

If you don’t have a CRA account, please following the following instructions 

How to register for CRA My Business Account

If this is your first time adding a business account number to your profile, the page will automatically ask you to add a business number (BN) to your profile. Input your nine-digit business number and click ‘add’.

How to link business number to your SIN