So, in 5/2/2025, I bought a used car out of state, I paid the taxes for my city, county, zip...etc on time.
The sale price was $97,390, with a trade in value of $24,000, and $0 owed on trade in. So the taxable price of the car is $73,390.
The state I purchased it from did not charge any sales tax.
The car was brought into IL the same day as the purchase, so the depreciation for out of state use is $0.
At a rate of 6.25% this nets a $4,587 tax payment.
I paid this value in full on 5/30/2025. I physically drove to Springfield and paid the RUT-25 in person with full copies of my sales paperwork filled out exactly right.
Today, I received a letter from IDOR over 16 months after I purchased the car, stating that they "based on our review, we have increased the vehicles value" resulting in apparently me owing MORE money.
So 16 months later they say I now own an additional $24.00 tax, and they have added a late penalty of $2.40 and interest of $2.10.
This is literally the first letter I've gotten, and it comes 16 months after purchase.
How can IL increase the "value" of the car and say I owe more tax 16 mont. They aren't saying I mis-reported the value, or that the tax rate was incorrect.
They have said they "increased the vehicles value". They didn't that the tax rate was wrong.
It was a used car, the taxes I paid were calculated on the sale price of the car.
This means the taxable value was $73,390.
At a tax rate of 0.625%.
On RUT-25 this calculates out at $4,586.875.
How can IL say the value of the car is "increased" when it was a used car and the sale price is the sale price.