Iowa Car Sales Tax Calculator
Iowa charges 5% fee for new registration (one-time registration fee charged in lieu of sales tax) on a used car purchase, verified September 15, 2026. There is no local tax on top. A trade-in is deducted before tax. Private-party sales are taxed too, paid when you title the car.
Figures verified September 15, 2026; sources linked per row. Re-checked quarterly, next due December 15, 2026.
Iowa's fee for new registration is $10 plus 5% of the price after any qualifying trade-in; the calculator shows the 5% only.
Taxable amount: $25,000. Tax only; dealer doc fees, title and registration are separate, and some states tax the doc fee as part of the price. The local figure is an estimate from the state's published range unless you entered your own rate.
The Iowa numbers, with sources
Each figure below was checked on September 15, 2026 against the page linked in the source column, and the wording the state uses is quoted so you can confirm it yourself.
| Item | Iowa | Source |
|---|---|---|
| State rate (Fee for new registration (one-time registration fee charged in lieu of sales tax)) | 5% | legis.iowa.gov(state source)As published: “a "fee for new registration" is imposed in the amount of ten dollars plus five percent of the purchase price for each vehicle subject to registration.” |
| Local tax range | None | legis.iowa.gov(state source)As published: “a "fee for new registration" is imposed in the amount of ten dollars plus five percent of the purchase price for each vehicle subject to registration.” |
| Trade-in credit | Yes, full credit | legis.iowa.gov(state source)As published: “in which a vehicle subject to registration is traded toward the purchase price of another vehicle subject to registration, the amount of the trade-in value allowed on the vehicle subject to registration traded.” |
| Dealer doc fee | $180 cap | legis.iowa.gov(state source)As published: “A motor vehicle dealer may charge a documentary fee not to exceed one hundred eighty dollars for each motor vehicle sold in a transaction.” |
| Title fee | $30 | legis.iowa.gov(state source)As published: “The application shall be accompanied by a fee of thirty dollars, and shall bear the owner's signature.” |
| Registration (flat plus value or weight) | $50+ | legis.iowa.gov(state source)As published: “shall be equal to one percent of the value as fixed by the department plus forty cents for each one hundred pounds or fraction thereof of weight of vehicle, as fixed by the department.” |
| Private-party sale taxed | Yes, paid when you title the car | legis.iowa.gov(state source)As published: “The fee for new registration shall be paid by the owner of the vehicle to the county treasurer at the time application is made for a new initial registration and certificate of title, if applicable.” |
- State rate: Iowa's fee for new registration is $10 plus 5% of the price after any qualifying trade-in; the calculator shows the 5% only.
- Local tax: The fee for new registration is a state fee collected by the county treasurer; no local option sales tax is added to a vehicle purchase.
- Trade-in: Applies both to dealer sales (vehicle traded to a retailer for resale) and to private-party trades between non-retailers; the person on the new title must be the same person on the traded vehicle's title (spouse, lineal family and entity exceptions listed in the statute).
- Doc fee: Iowa Code 322.19A(2). The fee must be included in the price of the vehicle, disclosed in any advertised price, and accompanied by a statutory notice in the purchase agreement.
- Registration: Annual fee is 1% of the value fixed by the DOT plus 40 cents per 100 lb of vehicle weight (Iowa Code 321.109(1)(a)). Under 321.113 (https://www.legis.iowa.gov/docs/code/321.113.pdf) the value portion drops to 75% of the new rate once the vehicle is more than 7 model years old and to 50% once more than 9 model years old, with a $50 floor, and the fee is a flat $50 at 12 model years old or older. max is null because the value component is unbounded.
Next steps
- Out-the-door price calculator: adds the Iowa doc fee, title and registration to the tax for the full figure.
- Dealer doc fees by state and registration and title fees by state: see how Iowa compares.
- All states: the full sales tax table.
Tax is fixed. The price is not.
CarWorthIt prices a specific VIN at its mileage against cars actually for sale near your ZIP code from $2.99. The $9.99 Negotiation Bundle adds an opening offer and a walk-away figure, so the number Iowa taxes is the right one.
Iowa car tax questions
Does Iowa charge sales tax on a private-party car sale?
Yes. The buyer pays the fee for new registration ($10 plus 5% of the purchase price, less any qualifying trade-in) to the county treasurer when applying for the new registration and certificate of title; no registration receipt is issued until it is paid.
Does Iowa give a trade-in credit on car sales tax?
Yes. The value of your trade-in is deducted from the price before Iowa tax is calculated. Applies both to dealer sales (vehicle traded to a retailer for resale) and to private-party trades between non-retailers; the person on the new title must be the same person on the traded vehicle's title (spouse, lineal family and entity exceptions listed in the statute).
What is the dealer doc fee cap in Iowa?
Iowa caps the dealer documentation fee at $180 (Iowa Code 322.19A). Iowa Code 322.19A(2). The fee must be included in the price of the vehicle, disclosed in any advertised price, and accompanied by a statutory notice in the purchase agreement.
Do local sales taxes apply to car purchases in Iowa?
No. The fee for new registration is a state fee collected by the county treasurer; no local option sales tax is added to a vehicle purchase.
How much does a car title cost in Iowa?
$30 (flat). Iowa Code 2026, section 321.20(1), as amended by 2024 Acts ch 1145. Older references to a $25 title fee are out of date. iowadot.gov returned HTTP 403, so the DOT's own fee page was not fetched.
How much is annual car registration in Iowa?
$50+ a year for a passenger car, flat plus value or weight. Annual fee is 1% of the value fixed by the DOT plus 40 cents per 100 lb of vehicle weight (Iowa Code 321.109(1)(a)). Under 321.113 (https://www.legis.iowa.gov/docs/code/321.113.pdf) the value portion drops to 75% of the new rate once the vehicle is more than 7 model years old and to 50% once more than 9 model years old, with a $50 floor, and the fee is a flat $50 at 12 model years old or older. max is null because the value component is unbounded.
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