Wyoming Vehicle Sales Tax Calculator
Easily calculate vehicle sales tax for all Wyoming counties
Vehicle Information
Results
Complete the form to see the results
Usage Guide
How to Use the Wyoming Car Sales Tax Calculator
Follow these simple steps to calculate your Wyoming vehicle sales tax:
Important Notes
- The calculator uses current Wyoming sales tax rates as of 2025
- Tax rates may vary within counties for specific municipalities
- Sales tax is due within 60-65 days of purchase (varies by county)
- Trade-in values reduce the taxable amount, potentially saving you money
- The tax rate is based on your county of residence, not the purchase location
How Wyoming Vehicle Sales Tax Works
Tax Structure
Wyoming's vehicle sales tax consists of two components:
- State Sales Tax: 4% statewide base rate
- Local Sales Tax: Additional county and municipal taxes (0% to 3%)
Tax Calculation
The sales tax is calculated on the net purchase price:
Taxable Amount = Vehicle Price - Trade-in Value
Total Tax = Taxable Amount × Tax Rate
When Tax is Due
Vehicle sales tax must be paid before the vehicle can be registered. The specific timeline varies by county:
- Most counties: Within 60 days of purchase
- Some counties: Within 65 days of purchase
- Penalties begin accruing after the deadline
Sales Tax vs. Use Tax
- Sales Tax: Applied when you purchase a vehicle within Wyoming
- Use Tax: Applied when you purchase a vehicle outside Wyoming but register it in Wyoming
- Both taxes are calculated at the same rate
Exemptions and Special Cases
- Vehicles gifted between family members may have different tax treatment
- Some dealer-purchased motorcycles may have tax collected at point of sale
- Military personnel may have special considerations
- Antique and classic vehicles may have special rates
Frequently Asked Questions
Q: Which county's tax rate applies to my vehicle purchase?
A: The tax rate is based on your county of residence, as indicated on your vehicle title, not where you purchase the vehicle.
Q: How does a trade-in affect my tax calculation?
A: Trade-in value is deducted from the vehicle purchase price before calculating tax. For example, if you buy a $20,000 car and trade in a vehicle worth $5,000, you only pay tax on $15,000.
Q: When do I need to pay the sales tax?
A: Sales tax is due within 60-65 days of purchase (varies by county) and must be paid before registering the vehicle. Penalties apply for late payment.
Q: What if I bought my vehicle out of state?
A: You'll pay use tax instead of sales tax, but the rate and calculation are the same. If you already paid sales tax in another state, you may receive credit for that amount.
Q: Are there any vehicles exempt from sales tax?
A: Most vehicles are subject to sales tax, but there are limited exemptions for certain situations like gifts between family members, inherited vehicles, or vehicles used for specific business purposes.
Q: What happens if I don't pay the tax on time?
A: Late payment penalties typically include a monthly interest fee (usually 1%) and a civil penalty (usually $25 or 10% of the tax due, whichever is greater).
Q: Can I register my vehicle without paying the sales tax?
A: No, Wyoming law requires that sales tax be paid before a vehicle can be registered. You cannot obtain license plates or registration without proof of tax payment.
Q: Are motorcycles and ATVs subject to the same tax?
A: Yes, motorcycles, ATVs, and most other motor vehicles are subject to the same sales tax rates. However, some motorcycles purchased from Wyoming dealers may have tax collected at the point of sale.
Q: What is the sales tax in Casper, Wyoming for car purchases?
When buying a vehicle in Casper, Wyoming, the total sales tax rate includes both the state base rate and Natrona County’s local tax. Our calculator automatically applies the correct rate to help you estimate the total cost of your car, including sales tax in Casper, Wyoming.
Q: How accurate is this calculator?
A: This calculator uses current Wyoming tax rates and standard calculation methods. However, tax rates can change, and some municipalities may have additional taxes. Always verify with your county treasurer's office for the most current rates.