Is my brother's company quietly costing me my small business tax rate

The situation

'Is my brother's company going to cost me my tax rate?' Fernanda asked that question in almost those exact words at the first meeting, and it took the rest of the file to answer it properly. Fernanda runs an incorporated consulting practice built around library systems work for public institutions, work she trained for as a librarian before going independent. Two years earlier, when her caseload outpaced what she could deliver alone, she started subcontracting overflow projects to a company owned by her brother Pratheep, who had left a court clerk position to start his own administrative support business. The two siblings had always been close, and the arrangement had grown naturally out of dinner-table conversations about who needed help and who had capacity.

The arrangement worked well operationally. Pratheep's company took on document management and records work that fit naturally alongside Fernanda's consulting contracts, invoiced her corporation for the hours, and both businesses grew steadily. Fernanda's business partner Abirami, who held a minority interest in Fernanda's corporation, handled the bookkeeping and had flagged in passing, almost a year into the arrangement, that the accountant preparing both companies' returns had asked an odd question about how the two corporations were related and whether either had ever filed anything about sharing a business limit. At the time it seemed like the kind of technical question an accountant asks and then forgets about, not something anyone treated as urgent.

Neither Fernanda nor Pratheep had heard the term before. Their accountant had raised it as something to look into rather than something urgent, and it sat unresolved for months while both companies kept filing on the assumption that each qualified independently for the reduced tax rate available to small Canadian-controlled private corporations on their first several hundred thousand dollars of active business income. Pratheep's company, in particular, had grown to rely on the subcontracted work from Fernanda's corporation as a steady and increasingly large share of its total revenue.

Fernanda came to us after a conversation with Pratheep in which he mentioned that his own accountant had started using the phrase 'specified corporate income' in emails without fully explaining what it meant. She wanted a straight answer to her original question, in language she could actually use, before either company's next return went in, and she wanted to understand whether the two years of returns already filed were going to be a problem as well.

The complication

The rule Fernanda's accountant had been circling around exists to prevent exactly the kind of structure her two companies had built, even though nobody involved had set it up for that purpose. When a private corporation earns income from providing services or property to another private corporation, and the two corporations are related, or a shareholder of one has an interest in the other, that income can be classified as specified corporate income rather than ordinary active business income. Specified corporate income does not automatically qualify for the small business deduction the way regular active income does; instead, the corporation earning it only gets access to the reduced tax rate on that income if the corporation paying for the services assigns part of its own business limit to the one performing the work.

Fernanda's corporation had been paying Pratheep's company for two years of subcontracted work, and because Fernanda and Pratheep were siblings with overlapping ownership interests in structures their accountant had set up years earlier for unrelated reasons, the two companies counted as related for this purpose. No business limit assignment had ever been filed. That meant Pratheep's company's income from the subcontracting arrangement, which by then made up a substantial share of its total revenue, was at risk of being taxed at the higher general corporate rate rather than the reduced small business rate, because it had never received the assignment of business limit the rules require to access that lower rate on income from a related company.

The financial gap this created was significant. The difference between the small business rate and the general corporate rate on income in the range the subcontracting relationship had generated worked out to somewhere between fifty and one hundred and fifty thousand dollars in additional tax exposure across the two years, if the arrangement was left unaddressed and the returns were ever reviewed on that basis.

There was an early complication that, once resolved, became the turning point for the whole file. Pratheep's accountant had initially taken the position that no relationship existed between the two corporations at all, hoping the issue would simply not apply. When we reviewed the actual ownership structure, that position did not hold up, and rather than let it stand as an unresolved dispute between the two accountants, Pratheep agreed early to accept that the companies were related. That concession, made before either return was filed, gave us a clean and honest starting point to fix the business limit assignment properly instead of arguing a losing position that would only have delayed the real fix.

What we did

1. Mapped the full ownership structure of both corporations, including Abirami's minority interest in Fernanda's company and the family relationship between Fernanda and Pratheep, to establish definitively whether the companies were related or associated under the applicable rules, rather than relying on the accountants' differing assumptions about what counted and what did not. This meant pulling share registers and shareholder agreements for both companies rather than accepting anyone's verbal description of who owned what, since the whole file turned on a technical relationship test that a casual summary could easily get wrong in either direction.
2. Confirmed Pratheep's early concession that the companies were related in writing, which resolved the one contested point in the file and let us move directly to structuring a proper fix instead of spending months on a dispute that the underlying facts did not support, and that neither sibling actually wanted to have. Getting it in writing mattered on its own, since a verbal agreement between two accountants working for different companies is exactly the kind of thing that can quietly unravel later if either side's recollection of the conversation shifts.
3. Calculated how much of Pratheep's company's income from the subcontracting arrangement qualified as specified corporate income for each of the two years, working from actual invoices rather than estimates, so the assignment we prepared matched the real numbers and would hold up if either return was ever reviewed by the agency down the line. Some of Pratheep's revenue came from clients unrelated to Fernanda's business, so this step also meant separating that income out cleanly, since only the subcontracted portion was ever at issue under the rule.
4. Prepared the business limit assignment from Fernanda's corporation to Pratheep's, using the mechanism the rules provide for a payer corporation to allocate part of its own business limit to a related corporation earning specified corporate income from it, sized to cover the actual income at issue for both years without over-allocating and creating a separate problem for Fernanda's own company.
5. Filed the assignment alongside both corporations' returns for the current year and worked with each company's accountant to determine whether the prior year's filings needed to be adjusted, since the assignment needed to be in place before the returns it applied to were filed rather than added afterward as an amendment. Coordinating the timing with two separate accountants, each protective of their own client, took more back and forth than the paperwork itself, but a mismatch between the two returns would have undermined the whole fix.
6. Restructured the invoicing arrangement going forward so the annual business limit assignment became a routine part of year-end filing for both companies rather than something either accountant had to remember to raise on their own, building it into the standing engagement letter with their bookkeeper so it happened automatically each year. Making it a standing instruction, rather than a note in a file somewhere, was the point, since the original gap had opened precisely because nobody owned the task from one year to the next.
7. Reviewed the corporate ownership documents for any other structural overlap between the family's various interests that could create similar issues in future years, since the relationship between Fernanda's and Pratheep's companies was not the only place their ownership intersected, and a second, undetected overlap could have created the same problem somewhere else in the family's affairs. This turned up nothing further in this case, but the absence of a second problem was worth confirming directly rather than assuming, given how quietly the first one had gone unnoticed for two years.
8. Walked both siblings through what specified corporate income means in practice, in plain language, so that if either company took on new related-party work in the future, Fernanda and Pratheep would recognize the trigger themselves rather than relying on an accountant to happen to notice it a year in, the way this one nearly did. We used their own arrangement as the working example, since a rule explained through a family's actual invoices sticks far better than the same rule explained in the abstract.

The outcome

Both companies filed their returns for the current year with the business limit assignment properly in place, and Pratheep's company retained access to the reduced small business tax rate on its income from the subcontracting work. The prior year's filings were reviewed and, because the numbers were close enough to what the current year's assignment would have produced, the accountants concluded an amendment was not necessary, though the file was documented clearly enough that either company could support the position if it were ever asked to explain it later.

No assessment or reassessment was ever issued, because the fix was made before either return reflected the exposure rather than after. The tax rate difference of fifty to one hundred and fifty thousand dollars that had been at risk was avoided entirely, and the ongoing cost of the fix was limited to the professional time spent structuring and filing the assignment, a modest amount against what an unaddressed erosion of the rate would have cost over time as the subcontracting relationship kept growing year over year.

Fernanda and Pratheep now file the business limit assignment as a routine annual step, and Abirami's bookkeeping process flags the related-company revenue each year so it gets reviewed before filing rather than after. The subcontracting arrangement between the two companies continues largely as before; what changed was the paperwork behind it, not the business itself. Fernanda has since said that the hardest part was not the fix but realizing how close two companies working in good faith with each other had come to a costly surprise neither of them would have understood if it had shown up in an assessment instead of a conversation. Pratheep, for his part, said the whole episode changed how he thinks about taking on work from family going forward, not because the arrangement was wrong, but because he had never once considered that being related to a client could change how his own company was taxed.

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