Verified against Ontario’s current sales tax rules, August 2026.
Planning to buy or sell a used car in Ontario? Then understanding the Ontario tax on used vehicles is non-negotiable. Many buyers focus on the price of the car itself but forget about the additional costs, like sales tax, which can significantly impact the final amount you pay.
You want to avoid surprises and potentially save money, whether you're purchasing from a dealership or a private seller. And knowing how sales tax works helps.
In this guide, we’ll break down how the vehicle tax in Ontario applies to used cars, when and how it's calculated, exemptions you might qualify for, and tips to reduce your tax burden.
What is Car Sales Tax in Ontario?
Car sales tax in Ontario falls under the Harmonized Sales Tax (HST) system. The province has a 13% HST for most vehicle transactions, including new and used cars. However, how and when you pay this tax depends on where you buy the car.
For new cars, the 13% HST is automatically included in the dealership price. But for used cars, things can get a little more complicated. If you're buying a used vehicle from a dealer, the HST is still added at checkout.
But if you’re purchasing from a private seller, the Ontario tax on used vehicles is calculated differently, based on the car’s wholesale value or purchase price, whichever is higher.
When Do You Pay Sales Tax on a Vehicle?
Buying from a Dealership
When purchasing a used car from a dealership, the tax on used vehicles is straightforward. The 13% HST is included in the final purchase price, so you don’t have to worry about paying the government separately.
Buying from a dealer also includes benefits like professional vehicle inspections, financing options, and potential warranties.
If you're shopping for a used car online, trusted platforms like Clutch make the process easy by offering thoroughly inspected vehicles and transparent pricing, so there are no surprises with taxes.
Buying from a Private Seller
If you buy a used car from a private seller, you still need to pay tax, but it works differently. Instead of paying the seller, you pay the Ontario tax on used vehicles when registering the car with ServiceOntario.
A quick naming note, because government documents use it: private sales are technically charged 13% Retail Sales Tax (RST), not HST. The rate is the same 13%, you pay it at ServiceOntario when you register, and most people just call it the sales tax. But if you see "RST" on your paperwork, that is what it means.
Here's how it works:
- The government calculates the tax based on either the car's purchase price or its wholesale value - whichever is higher.
- If you get a great deal on a used car, you might still have to pay tax on a higher valuation set by the province.
- The tax is collected at the time of registration, so make sure to budget for it when purchasing a used car privately.
Exemptions and Special Cases
Not everyone has to pay sales tax when transferring vehicle ownership. There are certain exemptions, such as:
1. Gifted Vehicles
If you're receiving a car as a gift from a qualifying family member (spouse, parent, grandparent, sibling, or child), you won’t have to pay the vehicle tax in Ontario. However, you must provide an affidavit confirming the relationship and gift status.
2. Inherited Vehicles
If you inherit a car from a deceased family member, you may be exempt from paying tax. When registering the vehicle, you'll need to show proper documentation, such as a will or legal transfer papers.
3. Indigenous Exemptions
The transaction may be tax-exempt if the vehicle purchase occurs on a reserve and the buyer has valid Indigenous status.
Understanding these exemptions can help you legally avoid unnecessary tax payments when acquiring a used vehicle.
Tax Savings When Trading in a Vehicle
When upgrading your car, trading it in at a dealership can lower your sales tax. Here’s how it works:
- When you trade in a car, its value is deducted from the new vehicle's purchase price.
- You only pay tax on the remaining balance, not the full price of the new car.
For example:
- New car price: $30,000
- Trade-in value: $10,000
- Taxable amount: $20,000
- HST (13%): $2,600
This can be a great way to save money compared to selling your car privately, where you'd pay the full tax on your next purchase. Our Sell or Trade service makes it easy to get a competitive offer on your trade-in, ensuring you maximize your savings.
How is Sales Tax Calculated?
Calculating sales tax isn't always straightforward. Factors like vehicle valuation can impact your total cost.
Private Sales: Wholesale Value vs. Purchase Price
For a private sale, ServiceOntario calculates the 13% RST on the greater of the purchase price and the vehicle’s wholesale value in the Canadian Red Book, per Ontario’s Retail Sales Tax rules. You pay it when you register the vehicle, not to the seller.
Example Calculation
- You buy a used car from a private seller for $8,000
- The Canadian Red Book values the car at $10,000
- You’ll be taxed on $10,000 (not $8,000), resulting in $1,300 in RST
This is why checking a car's wholesale value before making an offer is important, so you’re prepared for the tax you’ll owe.
Two useful exceptions to the Red Book rule: if the car you are buying is excessively worn or damaged, you can get a professional appraisal, and ServiceOntario will tax the higher of the appraised value or your purchase price instead of the book value. And if the vehicle’s average wholesale value is under $1,000, tax is simply calculated on the purchase price. Both details come straight from Ontario’s RST rules; they exist so you aren’t taxed on a value the car genuinely doesn’t have.
Dealer Purchases: Added Fees
When buying from a dealership, the vehicle tax in Ontario is applied to the total price, including:
- The car’s base price
- Any added dealer fees (e.g., admin fees)
- Optional add-ons like extended warranties
Using tools like Clutch’s Car Loan Calculator can help you estimate your total cost, including tax, so you know exactly what to expect.
Note: Aside from sales tax, other fees can increase the cost of your vehicle purchase. Some dealerships may charge:
- Documentation fees
- VIN etching fees
- Freight and PDI (Pre-Delivery Inspection) fees
These costs are not taxed separately but are included in the total purchase price, meaning you'll pay tax on them as well. Always review the final bill of sale before committing to a purchase.
Tips to Save on Sales Tax
You can’t avoid the tax, but a few decisions genuinely change what you pay, and one common trick backfires.
1. Trade In Instead of Selling Privately
As discussed earlier, trading in your car reduces the taxable amount on your next purchase. You only pay HST on the difference between the new car’s price and your trade-in value, making it one of the most effective ways to cut tax costs.
When trading in multiple vehicles, combine them into a single transaction to maximize your tax savings. Some dealerships also offer trade-in bonuses during specific promotions, which can further reduce your taxable amount.
2. Understand Lease Buyouts
If you’re buying out a leased vehicle, HST applies to the buyout amount. Factor that 13% into the math before deciding whether the buyout beats simply shopping the market.
3. Be Aware of Taxable Fees
Some dealerships charge additional fees that increase your total taxable amount. Shopping with a transparent platform like Clutch ensures you only pay what’s necessary, with no hidden charges.
Review all fees carefully and negotiate to remove unnecessary charges before finalizing the purchase. Remember that every dollar added to the purchase price means additional tax you'll need to pay.
One more thing to watch: if the tax is rolled into your financing, you’ll pay interest on the tax portion too.
4. Don’t Under-Declare the Price
When buying from a private seller, there’s always a risk of fraudulent transactions. Some sellers undervalue the vehicle on the bill of sale to help buyers reduce tax payments.
However, if the government finds out, you could be forced to pay the difference, and even face penalties. Always double-check the vehicle’s wholesale value and get a proper receipt when purchasing.
Save Money on Your Used Car Purchase
Understanding Ontario tax on used vehicles is less about finding loopholes and more about making informed financially sound decisions. With this new knowledge, you turn a potentially stressful experience into a manageable one.
Remember, every dollar saved in tax is a dollar you can invest in your new (used) vehicle or future automotive purchases.
Need a hassle-free car shopping experience with clear pricing and no surprises? Clutch offers an easy, 100% online way to buy, sell, or trade in your vehicle, without the guesswork. Browse our inventory and experience the Clutch difference.
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