2025 Missouri Sales Tax Calculator Usa

Calculate your 2025 Missouri sales tax with this USA-specific calculator. Missouri has a state sales tax rate of 4.225%, with additional local taxes in some counties. This calculator helps you determine the total sales tax on your purchase, including any applicable local taxes.

How to Use This Calculator

To calculate your Missouri sales tax for 2025:

Enter the purchase amount in the "Purchase Amount" field.
Select your county from the dropdown list. If you're not sure, choose "No Local Tax" for the state rate only.
Click "Calculate" to see your total sales tax and final price.

The calculator will show you the state tax, local tax (if applicable), total tax, and your final price after tax.

Note

This calculator uses the 2025 Missouri sales tax rates as of our last update. For the most current rates, check with your local tax authority or the Missouri Department of Revenue.

Formula Used

The Missouri sales tax is calculated as follows:

Sales Tax Calculation

Total Sales Tax = (Purchase Amount × State Tax Rate) + (Purchase Amount × Local Tax Rate)

Final Price = Purchase Amount + Total Sales Tax

The state tax rate is 4.225%. Local tax rates vary by county. Some counties have no additional local tax.

Worked Example

Let's calculate the sales tax for a $100 purchase in St. Louis County, which has a local tax rate of 1%.

Purchase Amount = $100
State Tax Rate = 4.225%
Local Tax Rate = 1%
State Tax = $100 × 0.04225 = $4.225
Local Tax = $100 × 0.01 = $1.00
Total Sales Tax = $4.225 + $1.00 = $5.225
Final Price = $100 + $5.225 = $105.225

So, a $100 purchase in St. Louis County would cost $105.23 after tax.

Frequently Asked Questions

What is the Missouri state sales tax rate?: The Missouri state sales tax rate is 4.225%.
Do all Missouri counties have local sales tax?: No, only some counties have additional local sales tax. The calculator includes common local rates, but you should verify your specific county's rate.
Is the sales tax rate the same for all purchases?: Yes, the sales tax rate applies to most retail purchases in Missouri. Some items, like groceries and prescription drugs, may be exempt from sales tax.
When was this calculator last updated?: This calculator was last updated on June 15, 2024. For the most current tax rates, check with your local tax authority.
Where can I find official Missouri sales tax information?: You can find official Missouri sales tax information on the Missouri Department of Revenue website.