Most accountants already do the hard part. They know the client, they know the numbers, and they know when a CRA file has stopped behaving like routine compliance and started behaving like a dispute. What they often do not have — and cannot offer — is solicitor-client privilege, standing in the Tax Court of Canada, or the ability to take a matter all the way through litigation. That gap is exactly where a co-counsel relationship with a tax lawyer earns its place.
Barrett Tax Law is built around collaboration with Canadian accountants, not competition with them. The first principle of the relationship is simple and worth stating plainly: we do not poach clients. We do not prepare returns, we do not provide bookkeeping, and we do not try to convert your client into our client. You stay the relationship holder. We step in on the legal side, do the legal work, and step back out. This article explains how that works in practice.
What "co-counsel" actually means
Co-counsel is a working arrangement in which two professionals stay on the same file, each doing the part their licence and training fit. The accountant continues to manage the financial-statement and return work and the routine CRA correspondence. The tax lawyer handles the legal submissions, manages the strategic direction of the dispute, and — if the matter gets there — carries the Tax Court file. Both professionals remain on the file. The client experiences a coordinated team rather than a hand-off.
What does not work, and what we deliberately avoid, is the model where the lawyer takes over and the accountant disappears. The lawyer needs the accountant's facts, working papers, and judgment. The client needs continuity with the advisor they already trust. A clean hand-off usually serves no one, and it certainly does not serve the relationship you have spent years building.
Two ways to engage
There are two structures, and the right one depends on who needs to hold the retainer.
Refer-and-collaborate. You refer the legal portion of a file to us. We engage your client under our retainer, work in coordination with you, and bring you into communications wherever it is useful. The client knows you brought us in, and they understand that you are still steering the overall relationship. This is the most common structure.
Engage-as-counsel. You retain us as legal counsel on behalf of your firm or your client. In this structure your firm is the client of the lawyer, which can be useful where you want the legal analysis to support your own work product, or where the file is sensitive enough that you want the analysis kept within a privileged channel from the outset.
In both structures the commercial point is the same: the engagement is scoped to the legal work, quoted up front, and bounded. You are not handing over your client; you are adding a capability to the file for as long as the file needs it.
Who does what on a coordinated file
- The accountant keeps the books and the returns, gathers the underlying records, explains the factual history, and stays the client's day-to-day point of contact. Much of the strongest evidence in a dispute lives in the accountant's working papers.
- The tax lawyer drafts the legal submissions — Notices of Objection, representations to CRA Appeals, Voluntary Disclosures Program applications — manages the legal strategy, asserts privilege where it helps, and conducts any Tax Court of Canada proceeding.
- Both coordinate on the narrative. The lawyer's legal theory has to sit on top of the accountant's numbers, and the numbers have to be defensible. Files go sideways when the two are developed in isolation.
How privilege attaches — and why it matters
This is the single most important reason to involve a tax lawyer early, and it is worth being precise about. Communications between an accountant and a client are not privileged. There is no accountant-client privilege in Canadian tax law. If the CRA — or, in a worst case, a prosecutor — demands the accountant's file, advice notes, emails, and memos about how a position was arrived at, those documents are generally producible. An accountant's candid working note about a risky position can become the CRA's best evidence against the client.
Solicitor-client privilege is different. Once a client engages a tax lawyer, confidential communications made for the purpose of obtaining legal advice are protected from disclosure. That protection can extend to analysis the accountant prepares at the lawyer's direction and for the purpose of the legal advice, under the umbrella of the retainer. The mechanics matter — privilege does not attach to everything automatically, and it has to be set up correctly — but the headline is straightforward: privilege is a tool the accountant cannot offer the client alone, and engaging a lawyer is what brings it onto the file.
The practical upshot is timing. Privilege protects communications made after the lawyer is engaged. It does not retroactively shield the email the client sent the accountant last year. The earlier a lawyer is brought in on a sensitive file, the more of the analysis can be developed inside the privileged channel rather than outside it.
A typical coordinated file, start to finish
It helps to walk through how a file actually moves. Suppose a client of yours receives a proposal letter on an audit, with a gross-negligence penalty attached to a disputed expense deduction. You have the records, you have prepared the returns, and you have a view on why the position was reasonable. At this point you call us — the call is free — and we talk through the facts, the dollar amount, and whether the penalty allegation has legs.
If we decide together that the file warrants legal involvement, we scope a fixed fee for the legal work and the client signs our retainer. From there, you keep doing what you do: assembling records, reconstructing the factual history, and explaining the accounting. We draft the response to the proposal letter, frame the legal theory on the penalty, and — because we are now engaged — develop the candid analysis inside the privileged channel. If the CRA assesses anyway, we file the Notice of Objection and carry the matter into CRA Appeals, then to the Tax Court of Canada if it goes that far. Throughout, you remain the client's day-to-day contact. When the matter resolves, we close our file and the client is back to being yours alone. That arc — call, scope, coordinate, resolve, return — is the shape of nearly every co-counsel engagement.
Why accountants choose to collaborate rather than refer out and lose touch
An accountant facing a file beyond the scope of accounting practice has three options. The first is to push on alone, which risks the client's position on matters that turn on legal doctrine and leaves candid analysis unprotected. The second is to send the client to a lawyer cold and lose visibility — and sometimes the relationship — entirely. The third is co-counsel: bring in the legal capability while keeping your hands on the file and your name on the relationship. The third option exists because the first two each cost something the accountant does not want to pay.
There is a professional-standards dimension as well. Provincial CPA bodies expect members to recognize the limits of their competence and to involve other professionals when a matter calls for it. A file that has crossed into gross-negligence-penalty territory, director's-liability exposure, or potential criminal investigation is a file where bringing in legal counsel is not just commercially sensible — it is the responsible course. Co-counsel lets you meet that standard without surrendering the client relationship that made you the right advisor in the first place.
What this is not
To avoid any confusion: this is not a referral-fee arrangement, and it is not an outsourcing of your work. We do not pay for referrals and we do not ask you to. We do not prepare returns, file financial statements, or take over your compliance role. We are a legal capability you add to a file for the duration of a legal problem. When the problem is gone, so are we.
What stays the same for your client
From the client's point of view, the relationship they have with you continues. You remain their advisor. We are the legal capability you brought to the table for a specific problem — gross-negligence penalties, a Tax Court appeal, a voluntary disclosure, a director's-liability assessment — and when the legal problem is resolved, we step back. We have a long history of accountants sending us their next difficult file precisely because we returned the last client to them intact.
Getting started
Most engagements begin with a free initial consultation — and that consultation is available to the accountant, not only the client. You can call us to talk through a file before anything escalates, with no fee and no obligation, to figure out together whether the matter warrants legal involvement and which engagement structure fits. The For Accountants page sets out the partnership program, and our practice areas — from voluntary disclosures to Tax Court appeals — describe the legal work we take on. For the question of when, exactly, a file crosses the line, see our companion guide on when an accountant should refer a client to a tax lawyer.