Why this decision matters
Splitting income with lower-taxed family members is one of the oldest ideas in Canadian tax planning — which is exactly why Parliament has spent decades narrowing it. What remains is real, but conditional.
There are two channels: paying wages for work actually performed, and paying dividends on shares family members actually own. Each has its own tests, and both are examined with the same question: would you have paid a stranger the same amount for the same thing?
The central idea
Family can be paid for real work at real rates, and for real ownership that clears TOSI. Everything else is taxed at the top rate.
Salaries to a spouse or child are deductible when the work is genuinely performed, the amount is reasonable for the duties, and the payment is actually made and documented — timesheets, job descriptions, payroll records, and payments into the family member's own account. A reasonable wage to a teenager doing bookkeeping or social media is legitimate planning; a phantom salary is not.
Dividends face the tax on split income (TOSI) rules, which tax family dividends at the top marginal rate unless an exception applies. The main gateways: the family member works an average of at least 20 hours per week in the business (this year or any five previous years); or they are 25 or older and hold 'excluded shares' — at least 10% of votes and value in a corporation that earns less than 90% of its income from services and is not a professional corporation. A spouse aged 65 or over receives special relief mirroring pension splitting.
Educational use notice
This publication is part of the Numera Decision Library and is provided for education only. It is general information — not accounting, tax, legal, or investment advice — and it does not consider your personal circumstances. Every guide is grounded in official guidance from government and regulated authorities — including the Canada Revenue Agency (CRA), the Department of Finance Canada, Service Canada and Employment and Social Development Canada, the Internal Revenue Service (IRS), and the Canadian Centre for Cyber Security — with the sources listed at the end of each guide. Tax rules and dollar limits change; confirm current figures with the official source, and speak with a qualified professional before acting on any decision discussed here.
Official references
Sources are official government and regulated-authority publications. Official sites reorganize periodically — search the document title if a link has moved.