TheRealOTD
Illinois rules, verified against the statutes

Out-the-door price in Illinois

How Illinois works

  • Illinois gives you FULL trade-in credit with no cap — the $10,000 cap that existed in 2020–2021 expired on January 1, 2022, so your entire trade-in value reduces the taxable amount.
  • Manufacturer rebates are taxed in Illinois: when the dealer is reimbursed for the rebate, it's part of the taxable selling price, so tax is computed before the rebate is applied. A dealer discount, by contrast, does lower your taxable price.
  • The doc fee is capped at $377.63 for 2026 (CPI-indexed from a $300 base, 815 ILCS 375/11.1) and is part of the taxable selling price.
  • Electric and plug-in hybrid vehicles pay an extra $100/yr registration surcharge.

Rules last verified Jul 9, 2026. Our methodology.

Try it for your ZIP

$
The negotiated (or advertised) selling price, before fees and tax.
Tax and registration follow where YOU register — not the dealership.
EV/PHEV surcharges apply in many states.
More options — trade-in, rebates, doc fee, add-ons
$
Reduces your taxable amount only in states that allow it.
$
Display-only in the equity math — doesn't affect tax.
$
Taxed in some states, a tax-free discount in others.
$
Off-invoice discount from the dealer — different from a rebate for tax.
$
Leave blank to use your state's cap or the typical amount.
$
Nitrogen, VIN etch, protection packages… labeled negotiable in the output.
$
Excluded from tax in some states when itemized separately.
$
Needed in states with value-based registration (AZ VLT, NV GST).
Truck / commercial (California weight fees)
Pickups always use the unladen-weight schedule (VC §9400) — never CVRA.
On the door-jamb sticker. Blank = typical half-ton bracket ($80).
As declared on the REG 4008. CVRA vehicles skip the TIF.
Used vehicle details (California)
Expired or expiring within 120 days of purchase → renewal fees ride along with the deal. Blank = assume they're due (safe estimate).
My price already includes…

Some dealers now fold fees into the advertised price (FTC pressure; California's total-price law). Check what yours covers so nothing gets counted twice.

Illinois OTD questions, answered

Does a trade-in reduce sales tax in Illinois?

Yes — Illinois taxes the difference: your trade-in's value is subtracted before tax is computed.

Are manufacturer rebates taxed in Illinois?

Effectively yes — tax is computed before the rebate is applied, so you pay tax on the pre-rebate price.

Is the doc fee capped in Illinois?

Yes — the cap is $377.63 (815 ILCS 375/11.1). A dealer may not exceed it.

Doc fees in all 50 states Registration fees by state