Overview
There's no Texas-style presumptive-value floor here; Wyoming taxes the actual agreed price. Trade-in allowances reduce the taxable amount on dealer deals, and as of July 1, 2026 a new state law exempts vehicles gifted between immediate family members from the tax entirely - as long as the giver already paid Wyoming tax on the vehicle at some point. Pick your scenario below.
01 - Official fees
Wyoming car sales tax fees at a glance
| Fee | Amount | Notes |
|---|---|---|
| Wyoming state rate | 4.0% | applies to every vehicle sale |
| Natrona / Campbell County option | +1.0% | total 5% |
| Laramie / Sweetwater County option | +2.0% | total 6% |
| Teton County option | +3.0% | total 7% - 1% general + 2% specific purpose |
| Dealer trade-in | Deducted | tax on price minus trade-in allowance |
| Immediate-family gift (proof of prior tax paid) | Exempt | effective 7/1/2026 |
| Late payment (after 65 days) | greater of $25 or 10% | plus 1%/month interest |
Figures verified June 2026 against official sources (listed below). Always confirm the final amount with your county treasurer (WYDOT) - counties can add small local fees.
03 - Same state, other costs
More Wyoming vehicle costs
04 - Common questions
Wyoming car sales tax FAQ
How much sales tax will I pay on a car in Wyoming?
4% goes to the state everywhere. Your county adds 0–3% on top, so the real range is 4% (a few rural counties) to 7% (Teton County/Jackson). Laramie and Sweetwater sit at 6%, Natrona and Campbell at 5% - use your county of residence, not the seller's.
Do I pay tax based on where I bought the car or where I live?
Where you live. A Casper resident (Natrona County, 5%) who buys a truck from a Jackson dealership (Teton County, 7%) still pays 5% - the rate follows the address on your title application, not the point of sale.
Does trading in my old car lower the tax?
Yes, on a dealer purchase - the treasurer taxes the price minus your trade-in allowance. There's no equivalent break on a private-party sale since there's no dealer structuring a trade.
Is gifting a car to my kid tax-free in Wyoming now?
As of July 1, 2026, yes - transfers between immediate family (spouse, parent/child, step-relations, grandparent/grandchild, sibling) are exempt from sales/use tax, provided the giver already paid Wyoming sales or use tax on the vehicle at some point (bring the old receipt or registration as proof). Without that proof, the county taxes the transfer at fair market value.
What happens if I don't pay within 65 days?
The county treasurer adds a civil penalty of whichever is greater - $25 or 10% of the tax owed - plus 1% interest per month (or partial month) starting on day 66. A $1,800 tax bill left three months unpaid picks up roughly $180 in penalty and interest.
Do I owe Wyoming tax if I already paid sales tax in another state?
Wyoming's use tax generally credits tax legitimately paid to another state on the same vehicle - bring your out-of-state receipt to the county treasurer so they can apply the credit rather than taxing you twice.
05 - Receipts
Official sources
Every number on this page comes from these documents - check them yourself.