Health Spending Accounts for Incorporated Business Owners in Ontario: How the Tax Works

If you run your business through a corporation, you already know that every dollar you pay yourself in salary or dividends gets taxed personally before you can spend it on anything, including your family's medical and dental bills. A health spending account is one of the few tools that lets an incorporated business owner pay for those costs with money that hasn't been taxed at the personal level first.

Done correctly, it's a legitimate and well-established planning tool. Done carelessly, it can be challenged by the CRA as something else entirely.

What a Health Spending Account Actually Is

A health spending account, or HSA, is the popular name for what the Income Tax Act treats as a private health services plan. Instead of the corporation paying you salary, which you then use to pay medical and dental bills out of after-tax income, the corporation funds an account that reimburses those bills directly — and, if the plan is structured correctly, the reimbursement isn't a taxable benefit to you.

The Core Tax Advantage: Pre-Tax vs. After-Tax Dollars

The mechanics are straightforward in concept: the corporation's contribution to a properly structured plan is generally a deductible business expense, and the reimbursement the employee, including an owner-employee, receives for eligible medical expenses is generally not included in their personal income. Compare that to paying the same bill with salary — the corporation deducts the salary, but the employee still pays personal tax on it before the after-tax remainder goes toward the bill. Routing eligible expenses through a properly structured plan avoids that layer of personal tax on money that was always going to a medical bill anyway.

Who Can Use One

Health spending accounts are available to any Ontario employer, incorporated or not, but they're particularly popular with owner-managed corporations, since the owner is typically also an employee and can be a plan member alongside, or instead of, other staff. If your corporation has no other employees besides you, the plan still needs to function as a genuine employee benefit, not simply a personal expense account with a different label.

What It Can (and Can't) Cover

Eligible expenses under a health spending account generally track the same broad category of expenses that qualify for the personal medical expense tax credit: most medical, dental, vision, and paramedical costs not otherwise covered by provincial health insurance or an employee's regular benefits plan. Cosmetic procedures and purely elective, non-medical expenses generally don't qualify. Because the eligible-expense list has specific rules and exceptions, check current CRA guidance, or ask your plan administrator, before assuming a particular expense qualifies.

Setting One Up: Why Structure Matters

How a health spending account is administered matters as much as what it covers. Most plans run through a third-party administrator or insurer, who processes claims and issues reimbursements according to plan rules. This arm's-length administration helps establish that the arrangement is a genuine benefit plan rather than the owner simply reimbursing their own expenses out of the company account. Some owner-only structures, sometimes called "cost-plus" arrangements, exist and can be legitimate, but they draw closer CRA attention than a plan covering multiple arm's-length employees, so it's worth getting advice on the specific structure before you rely on it.

Common Mistakes That Attract CRA Scrutiny

• Treating the account as a general personal expense account rather than limiting it to eligible medical and dental costs
• Skipping proper plan documentation and simply reimbursing bills informally
• Using a structure with no genuine administrator or insurance element for a single owner-employee, without confirming it still qualifies as a private health services plan
• Assuming every household or family expense automatically qualifies without checking

Frequently asked questions