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My Business Account: where the CRA actually talks to you

Reviewed by EverStone CPA · August 2026

Quick answer: My Business Account is the CRA’s portal for your corporation — where mail is delivered, balances are real-time, and filings can be confirmed rather than assumed. Every letter this site decodes arrives there first for companies on online mail. Two things every owner should do once: register for access, and authorize their accountant so professional help does not require forwarding screenshots. Neither takes long, and both are precisely the kind of task that gets deferred until a deadline makes it urgent.

Registering, without the frustration

Access is personal — you register as yourself, then the portal connects you to businesses where you are an owner or director. The identity step can involve information from your personal tax filings and a mailed security code, which is the part people start too late: register before you need it, because “the CRA is mailing me a code” is a bad place to stand on a response deadline.

What each part is for, in owner terms

  • Mail — the letters. If the corporation is on online mail, this is the only place they arrive; a review letter sitting unread here is still running its clock.
  • Balances per program account — corporate tax, GST/HST, payroll, each with its own ledger. The question “do we owe anything?” has a live answer here, not a remembered one.
  • Filed returns and assessments — what the CRA actually received and what it concluded, which settles most “did that go through?” anxieties in seconds.

Authorizing your accountant, properly

Authorization is done from the CRA’s side, not by sharing your login — never share credentials, and be suspicious of anyone who asks. An authorized representative can see the accounts, correspond, and file, which is what makes engagements like handling a review letter something we do rather than something we coach you through. When you engage us, this authorization is step one of onboarding, and revoking it later is equally simple — the owner always holds the keys.

Fastest first step: email what you’re facing to info@everstonecpa.com — reply within one business day, and we book the consult from there.

General information, not tax advice. The document in your hand and its own dates govern.

Common questions

Is online mail mandatory?+
The CRA has been moving business correspondence online as the default, which makes portal access matter more, not less: a letter you have not seen still counts as delivered. Whatever your current setting, knowing where mail arrives is the point.
I cannot get past the identity verification. Now what?+
The verification draws on your own filing history, so mismatches usually trace to using the wrong year’s figures. If it locks you into a mailed code, that is a delay to plan around — and a reason to register before a deadline needs you inside.
What can an authorized accountant see and do?+
View accounts and mail, correspond, and file — scoped by the authorization level and always revocable by you. What we can never do is more than the authorization grants, which is why the proper channel beats shared logins on every axis.
Can you walk me through setup?+
Yes — it is part of onboarding, and we will do it before it is urgent. Email info@everstonecpa.com and we will get your access and our authorization sorted in one short session.

Get access before you need it

Email us — portal setup and authorization is a one-session job, best done on no deadline at all.

Email us — info@everstonecpa.comOr book directly