Introduction

Architecture and design firms that have been operating successfully for several years often find themselves in a position that feels like a good problem: the professional corporation has accumulated significant retained earnings. Those earnings are invested inside the corporation, generating passive income — and the passive income is beginning to affect the small business deduction.

At the same time, the practice itself carries ongoing operational risk — contractual disputes, professional liability claims, and the general hazards of project-based work. Retained earnings sitting inside the operating professional corporation are exposed to those risks.

A holding company structure addresses both concerns.

The Two Problems a Holdco Solves

Problem one — passive income and the SBD: As discussed in Article 10, a CCPC with more than $50,000 of annual adjusted aggregate investment income begins to lose its small business deduction. For a design firm with $1–2 million in accumulated retained earnings invested inside the operating corporation, this threshold can be reached with a modest investment return. Once the SBD begins to be clawed back, the firm is paying the general corporate rate on active project revenue instead of the small business rate — a meaningful increase in the corporate tax burden.

Problem two — asset protection: The operating professional corporation contracts with clients, employs staff, leases premises, and carries professional liability exposure. Assets held inside the operating corporation — accumulated project revenue, investments — are exposed to claims against the corporation. A successful professional liability claim or contractual dispute could, in a worst case, reach those assets.

Transferring accumulated retained earnings from the operating corporation to a separate holding company reduces the asset concentration in the entity that carries operational risk.

How the Transfer Works

Excess after-tax profits in the operating corporation can be paid to the holding company as inter-corporate dividends. Under section 112 of the Income Tax Act, dividends paid between connected Canadian corporations are generally deductible to the recipient — meaning the holding company does not pay tax on dividends received from the operating corporation. The funds move from the opco to the holdco without an immediate additional tax cost.

Once in the holding company, the funds are invested. Passive income earned inside the holdco may still be subject to the high passive rate — but if the holdco is not an "associated corporation" with the opco (which depends on the shareholding structure), the holdco's AAII does not count against the opco's SBD limit.

Structuring the holdco so it is not associated with the opco for SBD purposes requires specific attention to share ownership and control — this is not automatic and requires proper corporate design.

Professional Corporation Constraints

Architectural professional corporations in Ontario must have voting shares held by licensed architects. A holding company that holds shares of the professional corporation must comply with the OAA's requirements — specifically, the holding company must be controlled by a licensed architect.

These professional body rules constrain the holding company structure in ways that do not apply to non-professional businesses. Any holdco structure involving an architectural professional corporation should be reviewed against current OAA requirements.

The Additional Administrative Cost

A two-entity structure — operating professional corporation and holding company — means two T2 filings, two sets of financial statements, and more complex inter-corporate accounting. For a design firm with modest accumulated earnings, the administrative cost may outweigh the benefit. For a firm with $500,000 or more in accumulated retained earnings, the tax and asset protection benefits typically justify the additional complexity.

When to Speak With a CPA

The decision to establish a holding company — and the design of the inter-corporate structure — should be made with CPA and corporate lawyer input, preferably before the passive income problem has already manifested. Once the SBD is being clawed back, a holdco can stop the bleed going forward, but it cannot retroactively address passive income that has already reduced the deduction.

Rotaru CPA works with architects and design firm principals on corporate structure planning and passive income management. Book a consultation to discuss whether a holding company is right for your practice.