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Iowa auto loan calculator

Estimated monthly car payment in Iowa

$440/mo

60 months at 7.54% APR · amount financed $21,949

State tax 5% on $25,000$1,250.00
Total sales tax$1,250.00
Dealer doc fee$699.00
Total interest$4,464.82
Total cost (price + tax + fees + interest)$41,414

No local vehicle tax in IA; state rate is the full tax. Source: Iowa Code 321.105A, fee for new registration.

Used car $20k New car $35k $50k truck + $15k trade $30k, 84 months

Loan breakdown

Vehicle price
$35,000
− Trade-in
$10,000
− Down payment
$5,000
+ Sales tax (full trade-in credit applied)
$1,250.00
+ Doc fee
$699.00
+ Title/registration
$0.00
= Amount financed
$21,949.00
Monthly payment
$440.23
Total of payments
$26,413.82
Total interest
$4,464.82

Tax is applied to the price minus any allowed trade-in credit; whether doc fees, rebates and add-ons are taxable varies by state and isn't modeled. Assumes the trade-in has no loan balance.

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Iowa car loan, at a glance: state vehicle tax 5% (Iowa charges a 5% one-time registration fee on vehicles instead of sales tax.) A $35,000 car with $5,000 down over 60 months at 7.54% APR is about $651/mo, financing $32,449 incl. $1,750 tax and the $699 doc fee.

Base sales tax: Tax Foundation, Facts & Figures 2026, Table 18 (State & Local Sales Tax Rates), as of January 1, 2026. APR: Federal Reserve G.19, 60-month new car loan rate at commercial banks (FRED RIFLPBCIANM60NM), August 2026.

Iowa car-buying taxes & fees

State vehicle taxIowa charges a 5% one-time registration fee on vehicles instead of sales tax. Confidence: medium.
5%
General state sales taxTax Foundation, Facts & Figures 2026, Table 18 (State & Local Sales Tax Rates), as of January 1, 2026. Local taxes may add.
6%
Trade-in tax creditBest-effort. Confidence: medium.
Allowed
Doc fee capNo doc-fee cap found in our best-effort check; many states require only disclosure.
None found
Title & registrationVaries by vehicle weight, value, age and county; not reliably sourced for every state, so enter your own estimate.
Editable

Sources & as-of dates

Base sales tax: Tax Foundation, Facts & Figures 2026, Table 18 (State & Local Sales Tax Rates) (as of January 1, 2026).
Vehicle-specific rates, trade-in rules and doc-fee caps: best-effort compilation from state DMV/revenue rules (Best-effort, checked October 12, 2026); e.g. Virginia DMV, Michigan Treasury Form 485, California CDTFA Regulation 1610.
Default APR: Federal Reserve G.19, 60-month new car loan rate at commercial banks (FRED RIFLPBCIANM60NM), 7.54% (August 2026). Data file: state-tax-rates.json.
Local vehicle tax (no local vehicle tax): Iowa Code 321.105A, fee for new registration (retrieved October 12, 2026). Iowa's 5% one-time registration fee replaces sales tax; local option sales taxes don't apply. Data file: ia.json.

Iowa mortgage calculator → · Iowa car sales tax calculator · All states

FAQ

What is the car sales tax in Iowa?

5% at the state level. Iowa charges a 5% one-time registration fee on vehicles instead of sales tax. Statewide general sales tax: 6% (Tax Foundation, Facts & Figures 2026, Table 18 (State & Local Sales Tax Rates), as of January 1, 2026).

Does Iowa give a sales tax credit for a trade-in?

Yes. Iowa generally taxes the price minus your trade-in value. (Best-effort; verify with the state DMV or revenue department.)

Does Iowa add county or city tax on a car?

No. Iowa's 5% one-time registration fee replaces sales tax; local option sales taxes don't apply. (Iowa Code 321.105A, fee for new registration).

Does Iowa cap dealer doc fees?

No doc-fee cap found in our best-effort check; many states require only disclosure. This calculator defaults to $699, editable.

What is the monthly payment on a $35,000 car in Iowa?

With $5,000 down, no trade-in, the $699 doc fee, 5% state tax and 7.54% APR for 60 months, about $651 a month ($6,601 total interest). Local taxes and registration add to this.

Is this financial advice?

No. These are estimates, not financial advice.

Estimates, not financial advice. Taxes, insurance, PMI and fees vary by lender, county and city; confirm with your lender, dealer and state agency before acting.