What changed in 2018, and what never changed
The 2018 change took a rule that already applied to minors and extended it to adults. Since 2000, the kiddie tax had taxed private-company dividends paid to children under 18 at the top marginal rate, which ended income sprinkling to minors. What remained wide open was sprinkling to adults: a spouse or a university-age child with no other income could hold shares, receive $40,000 or $50,000 of dividends, and pay tax at their own low brackets. Structuring share classes to do exactly that was standard practice for owner-managed companies. TOSI closed it: split income paid to any family member of any age is now taxed at the highest marginal rate, with most personal credits denied against it, unless the recipient fits through one of the defined exclusions.
What never changed is just as important to hear. Wages were never split income: paying a family member for work has always been governed by an older and simpler rule, the pay must be reasonable for the work actually done. Your own compensation as the active owner is untouched, TOSI is about income flowing to family members who are not earning it from the business. And the corporation's own tax life, the small business deduction, the passive income rules, the refundable tax pools, runs exactly as before; TOSI operates at the personal level, on the recipient's return. So the honest summary for a business family is: employment of family members survives intact, and dividend sprinkling survives only where an exclusion applies. The rest of this page is those exclusions.
Salary to family still works, if the pay matches the work
The reliable route for paying family did not change: hire them, have them actually work, and pay them what the work is worth. The legal test is reasonableness, would you pay an unrelated person roughly this amount for this role, and it scales sensibly: a spouse running the company's books and administration can be paid what a bookkeeper-administrator earns; a teenager doing weekend inventory can be paid what weekend inventory help earns; nobody can be paid $80,000 for approving the occasional invoice. Salary is deductible to the corporation, taxed to the family member at their own brackets, and completely outside TOSI at any age, a reasonable wage to a 16-year-old is taxed like any teenager's job.
Salary brings real side benefits that dividends never did. It creates RRSP contribution room, requires CPP contributions that build the family member's own retirement entitlement, and gives them earned income that supports child-care deductions and other income-tested claims. The discipline it demands is ordinary employer discipline: put them on payroll properly, withhold and remit like any employee, and keep evidence of the role, hours and duties, a job description and a record of what they actually do is usually enough. Where family payroll goes wrong is never the concept, it is pay that quietly grew past the job, or roles that exist only in the general ledger. CRA can deny the unreasonable portion of the deduction, and family wages are an easy thing for a reviewer to test. Reasonableness is also judged role by role as duties change, so family salaries belong in the annual payroll review, not set once and forgotten.
How TOSI actually works when it applies
When TOSI catches an amount, it does not deny the income, it repriced it: the recipient pays tax at the top marginal rate on that amount, and most credits, including their basic personal amount, cannot reduce it, only the dividend tax credit and a few others survive. The result is deliberately punitive: a dividend to a no-income spouse that once attracted very little tax instead attracts more than 47% in Ontario once TOSI applies, which is usually worse than the owner simply taking the dividend personally. That is the point, the rule does not ban the payment, it removes the reason for it.
Split income is defined by source, and it is wider than dividends. It captures taxable dividends and shareholder benefits from private corporations, income allocated from a partnership or trust where it derives from a related business, a business in which a family member is active or holds a significant stake, interest on certain loans to those entities, and, in some configurations, capital gains on private company shares transferred within the family. What it does not capture matters equally: salary, as above; publicly traded portfolio dividends; and income on money the family member earned and invested themselves. TOSI reaches income whose real source is a related person's business; it does not reach income the person earned on their own account.
Two structural notes complete the picture. Shares held through a family trust do not improve the analysis, dividends allocated out of a trust keep their character and face the same TOSI tests in the beneficiary's hands, and trust-held shares can never qualify for the excluded-shares exit, which requires direct ownership. And TOSI is assessed person by person, year by year: a spouse can be excluded this year through work and caught next year after stepping back, so the family payout plan needs an annual check, not a one-time blessing.
One boundary runs in the family's favour: TOSI taxes the split income itself, not what it later earns. A dividend that clears an exclusion, or a reasonable salary, becomes the family member's own money, and the investment income it earns from then on is theirs, taxed at their rates like anyone's savings. Over years that compounding is how a family builds genuinely separate income streams, which is why payments that pass the tests cleanly are worth establishing early rather than debated one year at a time.
The exclusions: five ways a family dividend stays at normal rates
Each exclusion is a defined test, and passing any one of them takes the amount out of TOSI entirely, back to ordinary tax at the recipient's own brackets. The table below is the working map; the details underneath are where families actually pass or fail.
| Exclusion | Who it can work for | The test, in short |
|---|---|---|
| Excluded business | Any family member 18 or older | Actively engaged in the business on a regular, continuous and substantial basis, this year or in any five prior years; averaging 20 hours a week is the bright line |
| Excluded shares | Family members 25 or older | Directly owns 10% or more of votes and value; the company earns less than 90% of its business income from services and is not a professional corporation |
| Reasonable return | Family members 25 or older | The amount is a reasonable return on their actual labour, capital and risk contributed to the business |
| Safe-harbour capital return | Family members 18 to 24 | A modest prescribed-rate return on capital they genuinely contributed from their own money |
| Age 65 rule | Spouse or partner of an owner 65 or older | Amounts that would have been excluded for the owner are excluded for the spouse, mirroring pension splitting |
The excluded business test is the workhorse, and its five-year memory is the detail families miss. The years of substantial involvement do not need to be consecutive or recent: a spouse who worked full-time in the business for any five years in its history has a permanent exit, and dividends to them stay at normal rates forever, even in full retirement from the company. Hours only need to average 20 a week over the part of the year the business operates, which suits seasonal businesses, and involvement below the bright line can still qualify on the facts if the contribution is genuinely regular and substantial. Contemporaneous evidence, schedules, correspondence, payroll, is what wins these arguments later.
The excluded shares test is narrower than it first looks. The 10% must be of both votes and value, held directly, not through a trust, and the company itself must qualify: professional corporations never do, and neither does any company earning 90% or more of its business income from providing services. A consulting firm, an agency or a clinic cannot use this exit at all, while a manufacturer, a retailer or a landlord-of-goods business often can. For companies that qualify, restructuring a spouse to a direct 10% holding is a genuine planning move, with a valuation and share terms that need doing properly. The reasonable return test, for those 25 and up, prices actual contributions, capital genuinely at risk, guarantees given, historical underpaid work, and rewards documentation over optimism.
At 65, income splitting comes back
The rules deliberately reopen at the owner's 65th birthday. From that year on, any amount that would have been excluded from TOSI for you is excluded for your spouse or common-law partner as well, which restores dividend splitting for the retirement years, by design, to parallel the pension income splitting employees already enjoy. An owner drawing down a corporation after stepping back can pay dividends to both spouses and have both taxed at their own rates, with no hours test and no shareholding threshold for the spouse.
That makes the owner's age a genuine planning variable in the corporate payout schedule. A family facing punitive rates on spousal dividends at 58 may simply be looking at a timing question: retain in the corporation now, accepting the passive-income and refundable-tax consequences that come with holding money inside a CCPC, and split the eventual drawdown after 65. Weighing that against paying more to the owner now at high personal rates is a multi-year modelling exercise, the same machinery as the rest of corporate tax planning for owner-managed businesses, with TOSI setting which family members can receive what, and when.
What to document, the facts that change the answer, and how we handle it
Five facts decide what your family can be paid and how it will be taxed. The age of each family member, since 18, 25 and the owner's 65 are all thresholds. The hours each one actually works, this year and historically, because the 20-hour line and the five-year memory are the widest exit. How each one holds shares, directly or through a trust, and whether the holding clears 10% of votes and value. What the company sells, because the services line and professional-corporation exclusion decide whether excluded shares are even available. And the shape of the corporation's own year, profit, the small business limit, refundable tax balances waiting on dividends, since the family plan and the corporate plan are one plan. The evidence file is unglamorous and decisive: payroll records, role descriptions, hour logs, share registers, and dividend resolutions that name who received what.
TOSI also did not close every splitting door outside the corporation. Lending a lower-income spouse money at the prescribed rate to invest, with the interest actually paid each year, still shifts future investment income onto their return, because portfolio income earned on their own account was never split income. It is slower than dividend sprinkling was, and it runs on discipline, a written loan and interest paid on time every year, but it stacks with everything above and does not depend on any TOSI exclusion.
We build family compensation as part of the annual payout plan, not as a separate trick. The work is to test each family member against the exclusions with evidence, set salary at defensible rates for real roles, route dividends only where they clear TOSI, and restructure holdings where a clean exit, direct excluded shares, or preparation for the age-65 window, is worth the transaction. That runs inside our tax planning engagements year by year; where the share structure itself needs rebuilding, it becomes a defined-scope project with a written fee. If your current structure predates 2018, a corporate tax planning CPA in Ontario should re-test it, most pre-TOSI sprinkling structures still exist on paper long after they stopped working, and a free 15-minute discovery call is enough to find out whether yours does.
