Illinois charges a 6.25% sales tax on used car purchases, plus a one-time title fee and annual registration fees that vary by vehicle weight

When you buy a used car in Illinois, you owe three separate charges to the state: sales tax on the purchase price, a title transfer fee, and registration fees. The sales tax rate is 6.25% statewide, though some counties and municipalities add local taxes on top. The title fee is a flat charge you pay once when you transfer ownership into your name. Registration fees renew annually and depend on your vehicle's weight class, not its value.

These costs are separate from what you pay the seller. You cannot avoid them by buying privately instead of from a dealer — Illinois requires the same taxes and fees regardless of where the car comes from. Understanding each charge helps you budget accurately and know what to expect when you visit the Secretary of State's office or an authorized vehicle services facility.

Key Takeaways

  • Sales tax on a used car purchase is 6.25% of the sale price in Illinois, plus any local taxes your county or city adds.
  • The title transfer fee is a one-time charge of $150 for a standard passenger vehicle, paid when you register the car in your name.
  • Annual registration fees range from roughly $50 to $300 depending on your vehicle's weight, and you renew them every year.
  • You must pay all three charges — sales tax, title fee, and registration — before the Secretary of State will issue you a license plate.
  • Private sales are taxed the same way as dealer sales; the seller's status does not change what you owe Illinois.

How the 6.25% sales tax is calculated and what gets added on top

The state sales tax of 6.25% applies to the sale price of the vehicle. If you buy a used car for $10,000, you owe $625 in state tax. This is the baseline that applies everywhere in Illinois.

However, your county or city may add a local sales tax on top of the state rate. Cook County (which includes Chicago) adds 1.25%, bringing the total to 7.5%. Other counties vary — some add 0.5%, others add 1% or more. You can find your local rate by entering your address on the Illinois Department of Revenue website or by calling your county assessor's office. The total tax you pay depends on where the car is registered, not where you buy it.

If you trade in a vehicle, Illinois allows you to subtract the trade-in value from the sale price before calculating tax. This is called a trade-in credit. If you trade in a car worth $3,000 toward a $10,000 purchase, you pay tax only on $7,000, not $10,000. You must have the title to the trade-in vehicle to claim this credit.

The one-time title transfer fee and what it covers

The title fee is a separate charge from sales tax. For a standard passenger vehicle, the title transfer fee is $150. This is the fee to have the Secretary of State issue a new title in your name. You pay it once, when you first register the car in Illinois.

If the car is financed, the lender's name will appear on the title as a lienholder. This does not change the fee you pay. If you are buying from a private seller, you will need the current title in hand to transfer it. If the seller cannot produce the title, you will need to file for a duplicate title first, which costs extra and delays registration.

Specialty vehicles have different title fees. Motorcycles, mopeds, and trailers have lower fees — typically $25 to $50. Trucks over a certain weight may have higher fees. The Secretary of State's office can tell you the exact fee for your vehicle type when you bring in your paperwork.

Annual registration fees based on vehicle weight

Registration fees in Illinois are based on your vehicle's gross vehicle weight rating (GVWR), not its age or value. A newer luxury sedan and a ten-year-old sedan of the same weight pay the same registration fee. The GVWR is listed on a sticker inside the driver's door frame and in your vehicle's manual.

Passenger vehicles under 4,000 pounds typically cost around $50 to $100 per year. Vehicles between 4,000 and 6,000 pounds cost roughly $100 to $200. Heavier vehicles and trucks cost more — some exceed $300 annually. These are approximate ranges; the exact amount depends on the specific weight bracket and whether you choose a one-year or multi-year registration.

You renew registration every year by the expiration date on your plate. You can renew online through the Secretary of State's website, by mail, or in person at a vehicle services facility. Late renewal carries a penalty fee. If your registration expires and you continue to drive, you risk a traffic stop and fine.

Where to pay and what documents you need

You can pay title and registration fees at any Secretary of State vehicle services facility or at an authorized third-party facility (often found at currency exchanges or DMV-style offices). You can also renew registration online or by mail, though you must pay title fees in person when you first transfer ownership.

Bring the current title, a valid photo ID, and proof of residence (utility bill, lease, or mortgage statement). If the car is financed, bring the lender's information. If you are buying from a private seller, both you and the seller must sign the title in the correct places — signing in the wrong spot delays processing. The Secretary of State's website shows the exact signature lines for your vehicle type.

Processing typically takes one to two weeks if you explore in person. Mail applications take longer. You will receive temporary registration while you wait for your permanent plate.

Tax breaks and exemptions that may reduce what you owe

Trade-in credits reduce your taxable purchase price, as noted above. If you are a disabled veteran, you may be exempt from registration fees — contact the Secretary of State's office for details and required documentation.

Vehicles registered as farm equipment or for specific commercial purposes may may have access to for different fee structures. Nonprofit organizations may have exemptions for certain vehicle types. These are narrow categories with strict documentation requirements. The Secretary of State's office can tell you whether your situation qualifies.

There is no general exemption for low-income buyers or first-time car owners. Sales tax and registration fees explore to all private purchases. Some employers or credit unions offer discounts on dealer fees, but these do not reduce what you owe the state.

How private sales differ from dealer sales in terms of taxes and fees

From the state's perspective, private sales and dealer sales are taxed identically. You owe 6.25% state sales tax plus local tax, the title fee, and registration fees regardless of whether you buy from an individual or a dealership. The difference lies in paperwork and process, not in what Illinois charges.

When you buy from a dealer, the dealer often handles the title transfer and registration on your behalf — you pay them, and they submit the paperwork to the Secretary of State. When you buy privately, you handle the paperwork yourself or hire a third party to do it. Either way, you pay the same state fees.

One practical difference: dealers are required to collect sales tax at the point of sale. Private sellers are not. If you buy privately, you must pay the sales tax yourself when you register the vehicle. This means you need to budget for the tax even though you did not pay it to the seller.

Frequently Asked Questions

What if I buy a used car out of state and bring it to Illinois?

You must register it in Illinois and pay Illinois sales tax based on the purchase price, even if you bought it in another state. You cannot avoid Illinois tax by purchasing elsewhere. Bring your out-of-state title and bill of sale to an Illinois vehicle services facility to transfer the title into your name.

Do I have to pay sales tax if I inherit a car or receive one as a gift?

No. Transfers by inheritance, gift, or family transfer are exempt from sales tax in Illinois. You still pay the title transfer fee and registration fees, but not the 6.25% sales tax. You will need to provide documentation of the transfer (a will, gift letter, or court order) to claim the exemption.

Can I register a car online to avoid going to an office?

You can renew an existing registration online through the Secretary of State's website. However, you must visit a vehicle services facility in person for your first title transfer and registration. You cannot complete an initial registration entirely online.

What happens if I do not pay the sales tax?

The Secretary of State will not issue a title or registration without proof that sales tax has been paid. If you buy privately and do not pay tax, you cannot legally register the vehicle. The state can also pursue unpaid tax as a debt and may place a hold on your driver's license.

Are there any discounts for registering multiple vehicles?

No. Each vehicle is registered separately and pays its own fees based on weight. There is no bulk discount or household rate for multiple cars. Each registration renews on its own schedule.