Illinois Car Tax Calculator
Use the correct Illinois path: dealer transactions use a vehicle sales-tax rate, while private-party purchases use the 2026 RUT-50 age/value schedule.
Start with the deal price.
Use the negotiated selling price, not the monthly payment.
Private-party purchases use a tax schedule
Illinois RUT-50 does not use a single percentage for ordinary private-party vehicle purchases. Transactions below $15,000 generally use vehicle-age amounts; purchases at $15,000 or more move into value bands.
Dealer purchases use a different path
Dealer sales use the Illinois vehicle sales-tax system. Enter the applicable vehicle transaction rate for the deal location. A qualified trade-in can reduce the taxable selling price and the former $10,000 trade credit cap no longer applies to sales after 2021.
Current standard state fees
Illinois Secretary of State currently lists $165 for a standard title and $151 for standard passenger registration, for a $316 base before specialty, transfer or other charges.
Illinois vehicle tax depends heavily on who sold the vehicle. Registered-dealer transactions use dealer vehicle-tax rules, while a purchase from an individual/private party generally uses Form RUT-50 and the RUT-5 age/value schedule rather than one statewide percentage.
What the Illinois calculator includes
- Dealer or private-party seller
- Purchase price/value
- Vehicle age for sub-$15,000 private sale
- Current RUT-5 schedule
- RUT-6 local tax check
- Title and registration
- 30-day filing timeline for RUT-50
Seller type determines the Illinois tax path
A private-party vehicle purchase is not calculated by taking the purchase price times the dealer sales-tax rate. Illinois uses RUT-50, with the state private-party tax determined by the RUT-5 schedule. Purchases under $15,000 are generally tied to vehicle age; purchases of $15,000 or more use purchase-price/value bands.
Dealer transactions are reported under a different framework and can depend on the applicable transaction location. Choose the correct transaction type before comparing any tax estimate.
Local private-party vehicle taxes can be additional
Illinois publishes a separate RUT-6 reference for municipal and county private-party vehicle use taxes administered by the state. That means the state RUT-50 amount may not be the entire private-sale tax obligation for a buyer in an affected location.
The calculator keeps local additions visible rather than hard-coding one amount for every Illinois buyer. Verify the current RUT-6 listing for the title/registration address.
Deadlines and documents matter in private sales
Illinois states that RUT-50 is due within 30 days of acquiring a vehicle from a private party. When filed electronically, the purchaser should retain/print the required form for the Secretary of State title and plate process.
Keep the bill of sale, title, purchase date and proof of any applicable exception. A low purchase price does not automatically create a low tax because the statutory private-party schedule controls the calculation.
Why a $12,000 private sale and a $12,000 dealer sale are different
For a $12,000 purchase from an individual, Illinois does not simply multiply $12,000 by a dealer sales-tax rate. Because the private-party price is below $15,000, the RUT-5 age schedule generally determines the state RUT-50 tax, with any applicable local private-party tax added separately. A licensed-dealer transaction uses a different tax path.
Illinois vehicle tax calculator FAQs
What tax form applies to an Illinois private-party car purchase?
A purchase from an individual/private party generally uses Form RUT-50. Illinois says it is due within 30 days of the purchase or covered transfer.
Is Illinois private-party vehicle tax a percentage of price?
Not as one universal percentage. Under $15,000 the state RUT-5 schedule generally uses vehicle age; $15,000 and above uses value bands.
Can Illinois have extra local private-party vehicle tax?
Yes. Illinois publishes RUT-6 for municipal/county private-party vehicle taxes in applicable locations.
The calculator distinguishes fixed statewide rules from local, vehicle-specific or user-entered amounts. Dealer worksheets and the state motor-vehicle agency remain the final transaction records. Review the official source registry.
Review official sources