Mo Auto Sales Tax Calculator

Calculate the Missouri auto sales tax for your vehicle purchase with this free calculator. Missouri has a state sales tax rate of 4.225% and a local option sales tax that varies by county. This calculator helps you determine the total sales tax you'll pay when buying a car in Missouri.

How to Use This Calculator

Using the Missouri auto sales tax calculator is simple:

Enter the purchase price of your vehicle in the "Vehicle Price" field.
Select your county from the dropdown list. The local option sales tax rate will update automatically based on your selection.
Click the "Calculate" button to see your results.
Review the total sales tax amount and the breakdown of state and local taxes.

The calculator will show you the total sales tax you'll pay, which includes both the state sales tax and any applicable local option sales tax.

Formula Used

The Missouri auto sales tax is calculated using the following formula:

Total Sales Tax = (Vehicle Price × State Sales Tax Rate) + (Vehicle Price × Local Option Sales Tax Rate)

Where:

State Sales Tax Rate = 4.225%
Local Option Sales Tax Rate varies by county (see table below)

The total sales tax is the sum of the state sales tax and the local option sales tax.

Worked Example

Let's calculate the sales tax for a $25,000 vehicle purchased in St. Louis County, which has a local option sales tax rate of 1.5%.

State Sales Tax = $25,000 × 4.225% = $1,056.25 Local Option Sales Tax = $25,000 × 1.5% = $375.00 Total Sales Tax = $1,056.25 + $375.00 = $1,431.25

So, the total sales tax for this vehicle purchase would be $1,431.25.

Missouri County Sales Tax Rates

The local option sales tax rate varies by county in Missouri. Here are some common rates:

County	Local Option Sales Tax Rate
St. Louis	1.5%
Kansas City	1.5%
Jackson	1.5%
St. Charles	1.5%
Clay	1.5%
Platte	1.5%
Callaway	1.5%
Boone	1.5%
Cape Girardeau	1.5%
Other counties	0%

Note: Some counties may have additional local taxes that are not included in this calculator.

Frequently Asked Questions

What is the Missouri state sales tax rate for vehicles?: The Missouri state sales tax rate for vehicles is 4.225%.
Do all counties in Missouri have a local option sales tax?: No, only certain counties have a local option sales tax. The rate varies by county, with some counties having a 1.5% local option tax and others having no additional local tax.
Is the sales tax calculated on the total purchase price or just the vehicle price?: The sales tax is calculated on the total purchase price of the vehicle, which includes the vehicle price plus any additional fees or options.
Are there any exemptions or discounts available for Missouri auto sales tax?: Missouri does not offer any exemptions or discounts for auto sales tax. The tax applies to all vehicle purchases.
Where can I find more information about Missouri auto sales tax?: For more detailed information, you can visit the Missouri Department of Revenue website.