How to update your efile number with CRA

To update your efile number:

• Visit the following website, EFILE account (opens in a new tab)
• Login in with your efile number and password, and renew your efile number as yearly renewal is mandatory for continued partcipation in electronic filing
• If you require addtional assitance in updating your efile number please contact the CRA at 1-800-959-5525 (for individuals) or 1-800-567-2345 (for businesses) and be prepared to verify your identity