The fee lines are part of the taxable price
Every charge that reaches the customer's total is payment for the repair, and all of it carries 13% HST. That includes the shop supplies fee, whether it is a percentage of labour with a cap or a flat amount per repair order, the tire handling or environmental line, storage on a vehicle that overstays its pickup date, and the diagnostic charge even when it is later credited against the work. None of these are pass-throughs, and none of them escape tax by sitting below the subtotal.
Sublet lines deserve the same respect. When an alignment, machining job or windshield goes out to a specialist and comes back marked up, the specialist charges the shop HST, which becomes an input tax credit, and the shop charges the customer HST on the higher amount. Netting the two on the invoice hides revenue and understates both halves of the return, which is exactly the pattern a reviewer is trained to notice.
Warranty work: one repair, up to three payers
A covered repair rarely has a single payer, but it is still one taxable sale. An aftermarket plan such as Lubrico or Global Warranty approves the claim at a capped labour rate and pays weeks later. The customer pays the deductible, plus anything above the cap, at pickup. A failed part can add a third cheque, a labour reimbursement from the jobber's or the manufacturer's parts-warranty program. HST applies to every piece, because each one is payment for the same repair.
The recurring trap is the tax-included cheque. Many plans state their payment as inclusive of tax, and a shop that books the whole amount as revenue is overstating income and under-remitting the HST hiding inside it. The deductible is not a tax-free side payment either. A goodwill comeback you fix for nothing is the opposite case: no payment, no HST, and the cost simply stays in labour and parts.
| Who pays | What the shop bills | HST treatment |
|---|---|---|
| Customer, out of warranty | The full repair order | 13% on labour, parts, sublet and every fee line |
| Warranty plan administrator | Covered portion at the capped rate | Taxable; back the tax out of a tax-included cheque |
| Customer, on a covered claim | Deductible plus any overage | Taxable, it is part of the same repair's price |
| Jobber or OEM parts program | Labour claim on the failed part | A taxable claim, not a discount on parts cost |
| No one, goodwill comeback | Nothing | No payment, no HST, the cost stays in cost |
An HST rhythm sized to the shop
Filing frequency follows taxable sales: annual up to $1.5 million, quarterly from $1.5 million to $6 million, monthly above that. Most established garages land in quarterly, and we treat the deadline as a feature, because four times a year the shop system, the bank and the return are forced to agree. Annual filers whose net tax passes $3,000 owe quarterly instalments anyway, so a smaller shop gains little by filing once a year and loses the discipline.
Two method notes. The quick method is capped at $400,000 in annual taxable sales, which rules out most working garages, and even under the cap a shop's parts-heavy purchasing usually makes the regular method with full input tax credits the better answer, so we run the comparison before anyone elects. And the return should be built from the records described on our auto repair accounting page, not from a bank-balance estimate in the last week of the quarter.
The T2, and why it must agree with the HST file
The corporate return is due six months after year-end, and the balance owing two months after it, or three for many small CCPCs claiming the small business deduction, so the tax is payable well before the return itself. CRA's systems compare T2 revenue against the year's HST returns, and a garage has honest reasons for small gaps: core deposits that are not sales, warranty claims straddling year-end, sublet shown gross in one place and net in another. We file both from one set of records and keep the reconciliation in the file, so any gap has its explanation written down before anyone asks for one.
The T2 also carries the shop's claims, capital cost allowance on hoists and scan tools and credits like the apprenticeship credit, all decided in advance on our tax planning page. Our Corporate Tax Filing service prepares the return and schedules from the same records as the HST filings, with the owner's T1 handled alongside where the engagement warrants it. If a letter arrives anyway, CRA Audit & Review Support responds with the working papers already in hand. Fees are quoted in writing after a free 15-minute discovery call, for garages across Mississauga and the rest of the GTA.
