Associated Corporations in Canada: Why Two Companies Do Not Mean Two Limits

Run two corporations and the instinct is that you now have two small business deduction limits. You do not. Associated corporations share one limit, and they have to agree how to divide it.

The rules that determine association are broader than most owners assume, and they reach through family members in ways that catch people who thought their structures were independent.

What association costs

The allocation must be agreed and filed. The form is Schedule 23, and every associated corporation has to be on the same one. If associated corporations do not file an agreement, the CRA can allocate the limit itself, and it is under no obligation to do it the way you would have chosen. Where the group also claims the enhanced SR&ED credit, its expenditure limit is allocated separately on Schedule 49.

Association is tested at any time in the taxation year, not at year end. Buying into a related company in November associates the two for that entire year, which means a limit you have already spent against was never fully yours. The mechanics of the limit itself are in the small business deduction.

The main ways corporations become associated

Broadly, two corporations are associated where:

• One controls the other, directly or indirectly, in any manner whatever
• Both are controlled by the same person or group of persons
• Each is controlled by a person, and those two persons are related, and one of them owns at least 25% of the shares of any class of the other corporation
• Variations of the above involving related groups

Control means more than a majority of votes, and “in any manner whatever” is deliberately wide. Control can be de facto as well as legal: influence sufficient to direct the corporation counts even without the votes.

Where families get caught

This is the part that surprises people. For these purposes related persons include spouses, parents, children, siblings and various in-law relationships, and children under 18 are generally deemed to hold shares owned by their parents.

Patterns that create association:

• You control Company A. Your spouse controls Company B. You own 30% of Company B. Associated.
• You control Company A. Your adult child controls Company B and you own 25% of a class of its shares. Associated.
• Two siblings each control their own company, with cross-holdings above the threshold. Associated.
• Your minor child “owns” shares of a second corporation. Those shares are generally attributed to you. Associated.

Separating ownership across family members does not create independence. It frequently creates association while giving the appearance of separation.

The de facto control trap

Even without shares, association can arise from influence. Factors that have been weighed include economic dependence, the ability to change the board, funding arrangements, and who actually runs the operation.

A corporation nominally owned by someone else but funded, directed and depended upon by you may be found under your de facto control. Structures built to look independent while functioning as one business tend to fail here. Since 2017 the Act has required all relevant factors to be weighed, not only those creating a legally enforceable right, which closed the narrower reading some structures had been relying on. Charging fees between the entities does not fix this either, and it opens a separate reasonableness question covered in management fees between related companies.

The third corporation rule, and the election that costs you

The rule people never see coming: if two corporations are each associated with the same third corporation, they are generally deemed associated with each other, even where they have no direct connection at all. Two unrelated operating companies that both sit under one holdco are associated by that route alone.

There is an election out of it, on Schedule 28, where the third corporation elects not to be associated with the other two. It is rarely free: the electing corporation’s own business limit becomes nil for the year. That is a sensible trade when the third corporation earns no active business income and a bad one otherwise, so run the numbers on both entities before filing it.

Associated, connected and affiliated are three different things

They get conflated constantly:

• Associated decides whether the small business limit is shared
• Connected matters for intercorporate dividends, which is what makes moving surplus to a holding company work
• Affiliated governs loss denial on transfers between related parties

A holdco and its opco are usually both associated and connected. They serve different rules, and being one does not imply the other.

Living with it

Allocate the limit deliberately. File the agreement, and put the limit where the income actually is. Splitting it evenly between a company earning $400,000 and one earning $20,000 wastes most of it.

Revisit every year. Income shifts between entities, and last year’s allocation may be this year’s mistake.

Watch the passive income grind. Passive investment income above a threshold reduces the small business limit, and for associated corporations that threshold is measured across the group. Investments in a holdco still affect the opco’s rate, which is the arithmetic set out in the passive income grind. The taxable capital reduction works the same way: it is computed on the combined taxable capital of the whole associated group, so a cash-rich but inactive company can grind the limit of the one actually earning.

Do not build structures to avoid association. The rules anticipate it. De facto control and family attribution close most of the obvious routes, and a structure that fails on audit costs more than the limit it was preserving.

When multiple corporations still make sense

Association is not a reason to avoid separate entities. They genuinely help for:

• Isolating risk between distinct business lines
• Different ownership groups in different ventures
• Preparing one business for sale without dragging the other in
• Holding investments away from operating exposure

You simply do it knowing there is one small business limit across the group.

Map control, file the allocation agreement, model the grind

1. Map who owns and controls what, including spouses, children and any minor’s holdings
2. Determine association honestly, including de facto control
3. File the allocation agreement every year, deliberately
4. Model the passive income grind across the group, not per company
5. Get a second opinion before restructuring to change the answer

Whether the group you have still fits the businesses you actually run is a structure question rather than a filing one, and it is worth taking on its own terms. That is what a structure review covers.

If you run more than one corporation, or you and a family member each run one with any cross-holding, it is worth confirming where you stand rather than discovering it in a reassessment.