Insights
Nov 24, 2025
Mackisen

HOW TO REGISTER FOR CRA “MY BUSINESS ACCOUNT” TO MANAGE GST/HST — A MONTREAL CPA FIRM NEAR YOU EXPLAINS

Registering for CRA’s My Business Account is the first step every business owner must take to manage GST/HST efficiently. My Business Account is the CRA’s secure online portal that lets you file GST/HST returns, check balances, view notices, adjust past filings, make payments, and monitor your account in real time. Without this access, businesses often rely on paper mail, receive delayed updates, or miss important deadlines that result in penalties and interest. This guide explains exactly how to register for My Business Account, what information you need, and how to verify your identity. Proper setup ensures that your GST/HST filings remain accurate, timely, and audit-ready.
Registering for My Business Account requires your business number, a program account for GST/HST, and security verification. Once the portal is activated, you will be able to view GST/HST return history, pending refunds, balances owing, assessments, and correspondence from the CRA. For incorporated businesses, partners, and self-employed individuals, this portal becomes essential for monitoring compliance and avoiding errors in GST/HST filings.
LEGAL AND REGULATORY FRAMEWORK
The CRA administers GST/HST under the Excise Tax Act. Every business registered for GST/HST is legally required to file GST/HST returns by the prescribed deadlines and maintain accurate records. My Business Account is the official system used to access your GST/HST account information, submit forms electronically, handle adjustments, and upload supporting documents. Businesses must protect their access credentials and ensure their contact information is up to date to receive electronic notices and reminders.
To register for My Business Account, the CRA requires that businesses authenticate their identity using personal tax information and business ownership details. This ensures that only authorized individuals can access GST/HST records. The portal is considered a secure and legally recognized channel of communication between taxpayers and the CRA. Failure to maintain access or update information may result in missed deadlines, delayed refunds, or additional reviews.
KEY COURT DECISIONS
Courts in Canada have emphasized that taxpayers are responsible for monitoring their own accounts through official channels such as My Business Account. In multiple decisions, taxpayers argued that they missed CRA notices or deadlines because they did not know about electronic correspondence. Courts ruled that CRA’s online system is an accepted method of communication, and that taxpayers must maintain access to manage their obligations.
Several decisions involving GST/HST refunds also confirm that taxpayers bear the burden of tracking refund requests and responding promptly to CRA information demands. Businesses that failed to check their online account or ignored messages faced reassessments, interest, or denied credits. The courts consistently support the position that My Business Account is a key compliance tool and that taxpayers must use it actively.
WHY CRA AND REVENU QUÉBEC TARGET THESE ISSUES
The CRA encourages online access because it reduces administrative costs and improves compliance monitoring. When businesses fail to register for My Business Account, the CRA cannot deliver electronic notices, instant assessments, or reminders. This often results in late filings and payment delays, which trigger penalties and interest. The CRA also uses the online portal to communicate audit requests, refund reviews, and discrepancies in filings. Businesses without regular access to the portal often miss these notices and face additional enforcement action.
Another reason the CRA focuses on online registration is the accuracy of GST/HST filings. Many discrepancies between GST/HST returns and income tax filings arise because taxpayers do not review their notices or account history. My Business Account provides transparency that helps avoid mismatches and reduces the risk of audits.
MACKISEN STRATEGY
At Mackisen CPA, we guide clients through registering for My Business Account and ensuring that access is set up correctly from the start. We collect the necessary information, assist in verifying identity, and help clients navigate CRA’s security protocols. Once your account is active, we link your business account to our authorized representative portal so we can monitor GST/HST filings, balances, and notices in real time.
Our strategy ensures that every GST/HST return aligns with CRA expectations. We help clients identify discrepancies early, confirm that CRA has processed payments correctly, and track refund status. Mackisen also sets up automated reminders for deadlines and reviews your online notices to reduce audit risk. This proactive approach helps prevent penalties, supports timely filings, and ensures complete compliance.
REAL CLIENT EXPERIENCE
A Montreal consultant had never registered for My Business Account and relied solely on paper mail. As a result, he missed a GST/HST filing reminder and incurred penalties and interest. Mackisen registered his account, linked our representative access, and set up automated reminders. No further penalties occurred.
An incorporated retailer experienced repeated delays in receiving GST/HST refunds. They were unaware that CRA had flagged their file for additional documentation. Once Mackisen helped set up My Business Account, we uploaded the required documents immediately and the refund was released.
A small e-commerce business received an audit request for three periods but did not see the CRA letter because they were not registered online. Mackisen identified the issue, completed the registration, responded to the CRA, and prevented the file from escalating into a full audit.
COMMON QUESTIONS
What information do I need to register for My Business Account
You need your business number, GST/HST program account, postal code, and personal tax details for identity verification.
Can I register if I am self-employed
Yes. Self-employed individuals use their personal CRA login to access business accounts.
How long does it take to activate My Business Account
Registration is immediate, but CRA may mail a security code to complete the setup.
Can I manage GST/HST returns through My Business Account
Yes. You can file returns, view past filings, adjust returns, and check balances.
Does My Business Account replace paper mail
Most CRA correspondence is delivered electronically once enrolled.
WHY MACKISEN
With more than 35 years of combined CPA experience, Mackisen CPA Montreal helps businesses stay compliant while recovering the taxes they’re entitled to. Whether you need help registering for My Business Account, filing GST/HST returns, or responding to CRA notices, our expert team ensures precision, transparency, and protection from audit risk.

