Is there HST on prescription glasses and contact lenses in Ontario?

Prescription eyewear is zero-rated, not just tax-free by chance

Under the Excise Tax Act, glasses and contact lenses supplied on the written order of a person entitled by provincial law to prescribe them, an optometrist or ophthalmologist, are zero-rated. No GST/HST is charged to the customer on a zero-rated sale, but unlike an exempt sale, the optical retailer can still claim input tax credits on the GST/HST it paid for lenses, frames inventory, lab work, and other costs behind that sale.

This distinction matters for how an optical shop manages its own tax position. Selling only zero-rated prescription eyewear does not shut a business out of claiming input tax credits the way selling only exempt supplies would; the shop still recovers tax on its own purchases even though it charges none to the customer on that particular sale. See our explainer on the difference between zero-rated and exempt supplies for why this distinction matters well beyond just what the customer sees on a receipt.

An optical shop still needs to register for GST/HST before any of this applies in practice, generally once its worldwide taxable and zero-rated sales combined exceed $30,000 in a quarter or over four consecutive quarters, the same small supplier rule that applies to any business; see our answer on when you have to register for GST/HST for how that threshold is measured.

What has to be in place for the zero-rating to apply

The zero-rating depends on the eyewear being supplied on a genuine written order from a professional legally entitled to issue one, generally an optometrist or ophthalmologist. A pair of reading glasses sold off a rack without any prescription behind it, even if the strength happens to match what a customer might otherwise be prescribed, does not qualify for zero-rating; it is an ordinary taxable retail sale.

The written order requirement is what separates a genuinely prescription-driven sale from a look-alike consumer product, and an optical retailer's records should be able to show that a prescription was on file for each zero-rated sale it makes, since that documentation is what supports the tax treatment if it is ever reviewed.

Contact lens fitting fees, where a practice charges separately for the assessment and follow-up needed to fit a particular lens type, are generally treated as part of the exempt eye care service rather than as part of the zero-rated lens sale itself. A practice billing a fitting fee alongside the lenses should apply the correct treatment to each portion of the invoice rather than assuming one category covers the whole charge. Replacement lenses fitted into an existing frame, ordered on a new written prescription as a patient's vision changes, follow the same zero-rated treatment as a full new pair, since the zero-rating tracks the prescription lens rather than the frame.

What stays fully taxable: non-prescription items and accessories

Not everything an optical shop sells qualifies for zero-rating, even in a store built around prescription eyewear. Several common product categories remain taxable at Ontario's 13% HST rate regardless of the store's overall focus.

• Non-prescription sunglasses and reading glasses sold without a written order are taxable.
• Frames sold on their own, without prescription lenses fitted, are taxable.
• Cases, cleaning cloths, contact lens solution, and similar accessories are taxable.
• Prescription lenses fitted into a customer's own frame are still zero-rated, since the zero-rating follows the prescription lens itself rather than requiring a full new frame purchase.

Eye exams are a separate, exempt category

An eye exam performed by an optometrist is not zero-rated, it is exempt, which sounds similar to a customer but works differently behind the scenes. Optometrist services fall under the health care exemption for licensed practitioners, and an exempt supply, unlike a zero-rated one, generally does not let the provider claim input tax credits on the costs of delivering that specific service.

A practice that both examines eyes and sells prescription eyewear is running one exempt activity and one zero-rated activity side by side, and needs its bookkeeping to track input tax credits against the right side of that split rather than claiming credits against exempt exam revenue where they are not available. Our answer on how input tax credits work covers the general mechanics behind this allocation for a business making more than one kind of supply.

In practice, this means shared costs, such as reception staff, rent, and general office software, need to be allocated between the exempt exam side of the practice and the zero-rated retail side, rather than treated as one blended pool of expenses. A practice that skips this allocation and claims full credits on everything risks overstating what it is entitled to recover.

How we handle this for optical and eye-care practices

We set up billing and inventory systems so a practice's zero-rated eyewear sales, exempt exam revenue, and taxable accessory sales are tracked separately, since each category flows through the GST/HST return differently. This split also matters when claiming input tax credits, since credits tied to exempt exam services are treated differently from credits tied to the zero-rated eyewear side of the business. Our tax services for optometry practices page covers this mixed-supply structure in more detail, and our bookkeeping for optometrists page covers the day-to-day recordkeeping that keeps the three revenue streams properly separated.