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State Guide Last verified August 27, 2026

Utah Car Sales Tax, Trade-In Credit, and Out-of-State Rules

What the desk and the buyer each need to know when a Utah deal crosses state lines: the rate, the trade-in math, the exemption paperwork, and the drive-home tags. Every fact links to the official source.

Check an Out-of-State Deal Jump to Quick Facts

Every fact sourced to Utah official publications below

Short answer

Utah taxes vehicle sales at 4.85% state plus local add-ons (depends on the dealer's location). Utah taxes the price after the trade-in is deducted. Utah exempts out-of-state buyers only under specific conditions. Utah credits sales tax legally paid to another state, so the same dollars are not taxed twice. This applies to a retail dealer purchase; lease deals and private-party sales follow their own rules in most states.

Utah car sales tax quick facts

Last verified August 27, 2026
Sales tax rate on vehicles4.85% state plus local add-ons (depends on the dealer's location)[1]
Trade-in creditUtah taxes the price after the trade-in is deducted. The trade-in must be part of a single transaction involving only two parties.[2]
Selling to an out-of-state buyerUtah exempts out-of-state buyers only under specific conditions. Two separate exemptions, both keyed to what happens to the car rather than to the buyer's residency. Exclusive use outside Utah: the vehicle must not be registered in Utah and must either never be used in Utah or be used here only for non-business purposes 30 days or less in a calendar year (for business use, only the time needed to drive it to the border), claimed on form TC-721A. Out-of-Utah delivery: the dealer or a common carrier must physically deliver the vehicle across the state line as an obligation of the sales contract, documented on form TC-757, and TC-721A does not support that one. Non-residency alone is not enough: military personnel stationed in Utah and out-of-state students attending Utah schools are taxable unless they meet the exclusive-use test.[2]
Credit for tax paid to another stateUtah credits sales tax legally paid to another state, so the same dollars are not taxed twice. No credit where the tax was legally due to Utah first. If a Utah sale is wrongly written up as exclusive use outside Utah, Utah allows no credit for tax the buyer later pays another state.[2]
Dealer doc feeNo statutory cap[3] · taxable[2]
Temp tag for the drive homeA Utah dealer may issue a temporary permit to a nonresident who buys here and will register in another state. Permits run 45 days from the day the dealer issues them, and that count includes the issue date, weekends and holidays. The dealer has to file the permit stub and the required fee with MVED within those 45 days or pay a penalty equal to the nonresident permit fee. Extension permits exist but MVED must approve them before the extension is issued.[4]
Out-of-state buyer registrationUtah registration follows residency, not where the car was bought. A person who has established domicile in Utah for six months or more in a calendar year is a resident and has 60 days from establishing residency to register the vehicle here. Utah also holds commuter reciprocity agreements with Idaho and Wyoming: someone whose primary residence is in one state but who works in the other may keep the vehicle registered in the state of principal residence for the commute. Those agreements cover registration only and waive no taxes or other fees.[2]

Utah car sales tax calculator

Enter the sale price and any trade-in to estimate Utah vehicle tax and the out-the-door total before title and registration. It applies the verified rate, trade-in rule and doc fee treatment from the quick facts above.

General information, not tax or legal advice. Everything on this page was compiled from official Utah government publications (listed under Sources) and last verified August 27, 2026, but rates and rules change and errors are possible. Voltra makes no warranty as to accuracy or completeness and accepts no liability for decisions made on this data. Confirm the current rules with the Utah State Tax Commission or a licensed professional before acting on anything here. Covers retail dealer sales; leases and private-party sales follow different rules in most states.

From the desk

Utah combines state and local rates by location and keeps vehicle sales inside the ordinary sales tax system, which makes it refreshingly boring. The interesting deals are the Nevada and Idaho borders, both directions.

Selling to an out-of-state buyer in Utah

Utah exempts out-of-state buyers only under specific conditions. Two separate exemptions, both keyed to what happens to the car rather than to the buyer's residency. Exclusive use outside Utah: the vehicle must not be registered in Utah and must either never be used in Utah or be used here only for non-business purposes 30 days or less in a calendar year (for business use, only the time needed to drive it to the border), claimed on form TC-721A. Out-of-Utah delivery: the dealer or a common carrier must physically deliver the vehicle across the state line as an obligation of the sales contract, documented on form TC-757, and TC-721A does not support that one. Non-residency alone is not enough: military personnel stationed in Utah and out-of-state students attending Utah schools are taxable unless they meet the exclusive-use test.[2]

The paperwork that makes the exemption real is TC-721A (Sales and Use Tax Exemption Affidavit for Exclusive Use Outside of Utah); TC-757 (Affidavit of Out-of-State Delivery) for dealer or common carrier deliveries, completed at delivery. Miss it and the exemption is the dealer's problem, not the buyer's.

Whatever the tax treatment, the desk owns what happens next: title in transit, tag on the car, registration filed in another state.

Buying in Utah from out of state

If you live in another state and buy in Utah, the deciding rule is where the vehicle gets registered: your home state's tax applies at registration, and what happens at the Utah sale depends on the rule above. Utah credits sales tax legally paid to another state, so the same dollars are not taxed twice. No credit where the tax was legally due to Utah first. If a Utah sale is wrongly written up as exclusive use outside Utah, Utah allows no credit for tax the buyer later pays another state.[2]

Registration and temp tags

A Utah dealer may issue a temporary permit to a nonresident who buys here and will register in another state. Permits run 45 days from the day the dealer issues them, and that count includes the issue date, weekends and holidays. The dealer has to file the permit stub and the required fee with MVED within those 45 days or pay a penalty equal to the nonresident permit fee. Extension permits exist but MVED must approve them before the extension is issued.[4] Utah registration follows residency, not where the car was bought. A person who has established domicile in Utah for six months or more in a calendar year is a resident and has 60 days from establishing residency to register the vehicle here. Utah also holds commuter reciprocity agreements with Idaho and Wyoming: someone whose primary residence is in one state but who works in the other may keep the vehicle registered in the state of principal residence for the commute. Those agreements cover registration only and waive no taxes or other fees.[2]

Bordering states

Cross-border deals from Utah most often involve Arizona, Colorado, Idaho, Nevada and Wyoming. No two pairings behave the same; run the exact combination through the out-of-state checker.

Vehicle-type exceptions

Motor vehicles, aircraft and watercraft are subject to sales and use tax but are exempt from the resort communities tax and the state correctional facility tax, so a car sold in a resort town carries a lower combined rate than other goods sold on the same street. Off-highway vehicles, snowmobiles and trailers get no such break. Separately, vehicles rated 26,001 pounds or more that run under both the International Registration Plan and the International Fuel Tax Agreement can qualify for the authorized carrier exemption on form TC-719, and permanently installed auxiliary equipment goes with it.[2]

Sources

  1. files.tax.utah.gov/tax/forms/2025/pub-25.pdf · verified 2026-08-27
  2. files.tax.utah.gov/tax/forms/2025/pub-05.pdf · verified 2026-08-27
  3. dmv.utah.gov/mved/dealers-overview/sales/ · verified 2026-08-27
  4. dmv.utah.gov/mved/dealers-overview/temporary-permits/ · verified 2026-08-27
Cite this page

“Utah Car Sales Tax & Out-of-State Rules.” Voltra. Last verified August 27, 2026. https://voltra.ai/car-sales-tax/utah/

More state-by-state guides: trade-in tax credit by state · recent rule changes · all states + the out-of-state checker

Utah car sales tax questions

Utah taxes vehicle sales at 4.85% state plus local add-ons (depends on the dealer's location). The rate is charged on the taxable price worked up at the desk, where trade-in treatment and doc fees do their damage.

Utah taxes the price after the trade-in is deducted. The trade-in must be part of a single transaction involving only two parties. That rule moves the taxable price, which is why the same deal pencils out to different tax in different states.

Utah exempts out-of-state buyers only under specific conditions. Two separate exemptions, both keyed to what happens to the car rather than to the buyer's residency. Exclusive use outside Utah: the vehicle must not be registered in Utah and must either never be used in Utah or be used here only for non-business purposes 30 days or less in a calendar year (for business use, only the time needed to drive it to the border), claimed on form TC-721A. Out-of-Utah delivery: the dealer or a common carrier must physically deliver the vehicle across the state line as an obligation of the sales contract, documented on form TC-757, and TC-721A does not support that one. Non-residency alone is not enough: military personnel stationed in Utah and out-of-state students attending Utah schools are taxable unless they meet the exclusive-use test. The exemption runs on TC-721A (Sales and Use Tax Exemption Affidavit for Exclusive Use Outside of Utah); TC-757 (Affidavit of Out-of-State Delivery) for dealer or common carrier deliveries, completed at delivery.

Utah credits sales tax legally paid to another state, so the same dollars are not taxed twice. No credit where the tax was legally due to Utah first. If a Utah sale is wrongly written up as exclusive use outside Utah, Utah allows no credit for tax the buyer later pays another state.

Utah does not cap dealer doc fees by statute. Tax applies to the doc fee as well.

Start with the sale price and subtract the trade-in allowance (Utah credits it in full), then multiply by 4.85% state plus local add-ons (depends on the dealer's location) plus any local add-on. The dealer doc fee is taxable in Utah, so add it before you multiply. The Utah calculator on this page runs those steps with the verified figures and shows the out-the-door estimate before title and registration fees.