Health Spending Account Rules Under the Income Tax Act

A Health Spending Account qualifies for tax-free reimbursements under the Income Tax Act only when it meets the definition of a Private Health Services Plan in subsection 248(1). That single requirement drives every other rule: how the plan must be worded, who can be covered, what expenses can be reimbursed, and how differently the arrangement works for a corporation versus a sole proprietor. Get the structure right and the employer deducts contributions as a business expense while the employee receives reimbursements that never appear as taxable income. Get it wrong and the CRA can treat every payment as ordinary salary.

What Makes a Plan Qualify as a PHSP

Subsection 248(1) defines a private health services plan as a contract of insurance covering hospital or medical expenses, or a medical care or hospital care insurance plan. Provincial health plans and certain federal plans for government employees serving abroad are excluded.¹ The controlling word is “insurance.” A discretionary pot of money the employer dips into when someone has a dental bill does not qualify; the arrangement has to look and function like an insurance contract.

The CRA describes five elements that must be present: an undertaking by one party to indemnify another, for an agreed consideration, against a loss or liability arising from an uncertain event.² In a workplace HSA, the employer’s undertaking is contractual: the employment agreement obligates the employer to cover defined health costs if the employee incurs them, and the employee’s work is the consideration. Without that contractual obligation, reimbursements can be reclassified as taxable income.

Two further limits apply. All or substantially all of the benefits paid in a calendar year, which the CRA reads as 90% or more, must go toward expenses eligible for the Medical Expense Tax Credit under section 118.2.² And coverage is limited to the employee, their spouse or common-law partner, and household members connected by blood, marriage, or adoption. Straying outside the eligible expense list or the eligible coverage group can put the plan’s PHSP status at risk, not just the specific claim.

Why the Tax Treatment Matters

When a plan qualifies, two things happen at once. The employer deducts contributions as a business expense in the year they are paid. Paragraph 6(1)(a)(i) of the Act excludes those same contributions from the employee’s taxable income, so the amount never lands on the T4.³ Paying an equivalent cash bonus is deductible for the employer too, but the employee pays tax on it and keeps less. Delivering the same dollar as an HSA reimbursement puts the full amount in the employee’s hands.

For smaller businesses that cannot justify traditional group insurance premiums, this is often the reason to set up a plan at all. The employer picks a fixed per-employee allocation, which makes costs predictable, and the employee decides how to spend it across the eligible categories.

Rules for Incorporated Businesses

A corporation has the most room to work with. It establishes the plan, sets a per-employee allocation, and deducts contributions. An owner who is also an employee of the corporation can participate alongside other staff, but the owner must genuinely function as an employee. The cleanest evidence is a T4 salary. An owner who takes only dividends looks like a shareholder to the CRA, and shareholder benefits do not receive the same tax-free treatment.

Allocation reasonableness comes into play whenever the corporation has both owner-employees and arm’s-length staff. Setting the owner’s HSA at $25,000 while giving employees $500 invites scrutiny. Amounts do not have to be identical, but the structure has to be defensible. Many businesses tier allocations by role or seniority so the design reflects normal compensation practice. If the CRA concludes the plan primarily serves shareholders, it can reclassify the benefits as taxable.

Rules for Sole Proprietors and Partners

Unincorporated owners work under section 20.01, which adds a threshold test before the deduction is even available. The individual must be actively engaged in the business on a regular and continuous basis and earn more than 50% of their income from that business.⁴ A part-time consultant whose employment income exceeds their freelance revenue will not clear that gate.

With Arm’s-Length Employees

When a sole proprietor employs at least one full-time arm’s-length employee who has worked three or more months, the owner’s own deduction is capped at the cost of equivalent coverage extended to that employee.⁴ Give the employee $2,000 in annual coverage, deduct up to $2,000 for yourself. The plan must also cover at least 50% of the people working in the business who are covered under the plan. A sole proprietor who quietly covers only themselves while ignoring eligible staff loses the deduction.

Without Employees

Where the business has no arm’s-length employees, the annual deduction is capped at $1,500 for each covered adult (the individual, their spouse or common-law partner, and household members aged 18 or older) plus $750 for each covered dependent under 18.⁴ A couple with two young children maxes out at $4,500. Those figures are written directly into the statute and are not indexed to inflation, so real value drops over time.

There is a deeper problem for a solo owner using a cost-plus arrangement. The CRA has taken the position that a cost-plus plan covering only the sole proprietor does not meet the insurance requirement, because the same person is both insurer and insured and no genuine risk-shifting occurs. Adding at least one arm’s-length employee resolves this. Operating alone, expect the PHSP status itself to be questioned, not just the size of the deduction.

Which Medical Expenses Can Be Reimbursed

Eligible expenses track the list in subsection 118.2(2), the same list that governs the Medical Expense Tax Credit.⁵ Common categories include:

Medical and dental services from physicians, dentists, nurses, and licensed private hospitals.
Prescription drugs that can lawfully be obtained only with a prescription, where a pharmacist records the sale.
Vision care, including eyeglasses and corrective devices prescribed by a medical practitioner or optometrist.
Assistive devices such as hearing aids, crutches, wheelchairs, artificial limbs, and spinal braces.
Diagnostic services, including laboratory and radiological procedures prescribed by a physician or dentist.
Dentures made or repaired by an authorized dental mechanic.

The prescription drug rule is stricter than people expect. The medication must legally require a prescription and the sale must be recorded by a pharmacist.⁵ Most over-the-counter products do not qualify. The CRA’s Income Tax Folio S1-F1-C1 covers the edge cases in detail.⁶ Rough rule: if you needed a prescription to buy it, it is likely eligible; if you grabbed it off the shelf, it is not.

Paramedical services like massage therapy or physiotherapy can qualify, but only when provided by a practitioner authorized under the laws of the relevant province. Provincial licensing rules vary. Before submitting a large claim for alternative or paramedical treatment, confirm the provider holds the credentials your province requires.

How Claims Are Processed

Most plans use a third-party administrator. The employee pays out of pocket, submits a claim with receipts showing the provider, patient, service or product, date, and amount, and the administrator reimburses the employee directly after checking the claim against the plan terms and the eligible-expense list.

The administrator does two jobs beyond paperwork. It preserves the insurance-like character the CRA requires by sitting between employer and employee. And it keeps the employee’s medical information confidential; the employer funds the account but does not see what specific treatments were claimed. That separation matters for privacy and for maintaining PHSP status.

Documentation is the employee’s responsibility. Keep receipts for at least six years in case of CRA review. A receipt reading “professional services — $150” without identifying the provider or service is the kind of record that causes trouble at audit.

Unused Balances at Year-End

Whether unused funds carry forward is set in the plan agreement, not the Income Tax Act. Many plans allow a carryforward of up to 12 months, so unused funds from one benefit year remain available through the next before being forfeited. Some plans are use-it-or-lose-it within each year. Employees who ignore the deadline lose whatever is left: if the plan year runs January to December with a 12-month carryforward, any unused 2025 allocation not claimed by December 31, 2026 is gone. A quarterly balance check is enough to avoid forfeiture.

GST/HST on Administration Fees

Administrator fees are generally subject to GST/HST. The exception is when the administrator also provides stop-loss insurance, taking on some of the financial risk; the CRA then treats the service as an exempt financial service. In a straight cost-plus arrangement where the employer bears all the risk, admin fees are taxable. The amounts are modest, but a business setting up a new plan should budget for them alongside the reimbursement allocations themselves.

1
Justice Laws Website. Income Tax Act – Section 248
2
Canada.ca. Medical Expenses, Including Payments From a Private Health Services Plan
3
Justice Laws Website. Income Tax Act – Section 6
4
Justice Laws Website. Income Tax Act – Section 20.01 PHSP Premiums
5
Justice Laws Website. Income Tax Act – Section 118.2 Medical Expense Credit
6
Canada.ca. Income Tax Folio S1-F1-C1, Medical Expense Tax Credit