When it's time to replace your car, you have two main choices for the old one: trade it in at a dealership or sell it yourself. A private sale can bring a higher price, but a trade-in can save you time, hassle, and, here in Illinois, some sales tax.
Here's an honest side-by-side so you can decide what makes sense for you.
The quick comparison
| Trade-in | Private sale | |
|---|---|---|
| Price | Usually a lower offer | Often a higher sale price |
| Speed | Can be done the same day | Can take days or weeks |
| Effort | One conversation | Photos, listings, calls, and test drives |
| Safety | No strangers or payment risk | Meeting strangers and handling payment |
| Paperwork and loan payoff | The dealer handles it | You and the buyer handle it |
| Illinois sales tax | Full trade-in value lowers the tax on your next car | No tax benefit |
The Illinois trade-in tax benefit
This is the part many people miss. In Illinois, when you trade in a vehicle toward the purchase of another one from a dealer, the trade-in value is generally subtracted from the taxable price of the car you're buying.
For example, if you buy a car for $20,000 and trade in a car worth $6,000, you'd generally pay sales tax on about $14,000 instead of $20,000. With combined state and local rates in the Aurora area, that can add up to several hundred dollars.
When you compare a private-sale price to a trade-in offer, add the tax savings to the trade-in side. The gap is often smaller than it looks.
When selling privately makes sense
A private sale can be worth the effort if:
- Your car is in high demand and in great condition
- You have time to wait for the right buyer
- You're comfortable screening buyers and handling payment safely
- You own the car outright with the title in hand
Tips for a safe private sale
- Meet in a public place. Many police departments offer safe exchange zones.
- Only accept secure payment. Cash counted at a bank or a cashier's check verified directly with the issuing bank. Be wary of overpayment schemes.
- Ride along on test drives and check the buyer's driver's license first.
- Sign the title over correctly and keep a bill of sale with the date, price, VIN, and both signatures.
- Remove your license plates. In Illinois, the plates stay with you, not the car.
- Report the sale to the Illinois Secretary of State. Details are on ilsos.gov.
When trading in makes sense
A trade-in is usually the better fit if:
- You want to drive away in your next car the same day
- You still owe money on your current car
- You'd rather not deal with strangers, listings, and test drives
- Your car needs repairs that would scare off private buyers
- You want the sales-tax benefit described above
What if you still owe money on your car?
This is common, and it's much simpler with a trade-in. The dealer pays off your existing loan as part of the deal. If your car is worth more than you owe, the difference (your equity) goes toward your next car or back to you. If you owe more than it's worth, that difference has to be covered.
Selling privately with a loan is possible, but it's more complicated, because the lender holds the title until the loan is paid off.
How to get the best trade-in value
- Clean it inside and out. First impressions matter.
- Gather your records. Maintenance receipts show the car was cared for.
- Bring both keys and the owner's manual.
- Fix small, cheap things, like bulbs and wiper blades, but skip big repairs, which rarely pay for themselves.
- Bring the car in, or share your VIN for a quote online. If the car is on our lot, we read the VIN ourselves, so there's nothing for you to look up.
You don't have to buy to sell
At Carselect, you can get an offer on your car whether or not you buy from us. Take the cash, or put it toward any vehicle on our lot. It's a quick way to find out what your car is worth before you decide which route to take.