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Finance Calc Kit
Tax

Missouri Sales Tax Calculator

Calculate state, county, and city sales tax rates and total cost for purchases in Missouri.

Purchase details

$

State base rate: 4.225%

Local rate: 5.454%

Combined rate: 9.679%

Total price (including tax)

$109.68

Total tax: $9.68 (9.679%)

Base pre-tax price

$100.00

Missouri state tax

$4.23

4.225%

Local tax

$5.45

5.454%

Final total amount

$109.68

Price and tax breakdown

  • Pre-tax price$100.0091.2%
  • State tax$4.233.9%
  • Local tax$5.455.0%
Missouri state and local sales tax rates reflect Missouri Department of Revenue guidance effective January 1, 2025. Combined rates vary by city, county, and special taxing districts. Confirm your exact jurisdiction rate before filing or remitting sales tax.
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How Missouri sales tax works

Missouri imposes a statewide sales tax on most retail purchases, then allows cities, counties, and special districts to add local taxes on top. The combined rate you pay depends on where the sale occurs, not where you live. This calculator adds or extracts Missouri state and local sales tax using rates effective January 1, 2025.

Retailers who set prices from cost and profit targets can combine margin planning with tax using the margin sales tax calculator. For general before-tax, after-tax, and tax-rate calculations, use the sales tax calculator. For general value-added or goods-and-services tax outside the United States, the GST calculator handles forward and reverse tax extraction on net or gross prices.

Missouri sales tax formulas

The Missouri Department of Revenue sets the state base rate at 4.225%. Local jurisdictions add their own rate. To calculate tax on a pre-tax price:

Total Tax=Pre-Tax Price×rstate+rlocal100\text{Total Tax} = \text{Pre-Tax Price} \times \frac{r_{\text{state}} + r_{\text{local}}}{100}
Final Price=Pre-Tax Price×(1+rstate+rlocal100)\text{Final Price} = \text{Pre-Tax Price} \times \left(1 + \frac{r_{\text{state}} + r_{\text{local}}}{100}\right)

When you only know the tax-inclusive total, extract the embedded tax with:

Pre-Tax Price=Total Price1+rstate+rlocal100\text{Pre-Tax Price} = \frac{\text{Total Price}}{1 + \frac{r_{\text{state}} + r_{\text{local}}}{100}}

Worked example: St. Louis City purchase

A $100 pre-tax purchase in St. Louis City carries a combined rate of about 9.679% (4.225% state plus 5.454% local). State tax is $4.23, local tax is $5.45, and total tax is $9.68. The customer pays $109.68 at checkout.

Frequently asked questions

What is the Missouri state sales tax rate?
The statewide base rate is 4.225% as published by the Missouri Department of Revenue. Cities and counties may add local taxes, so your effective rate is usually higher than the state rate alone.
Does Missouri tax groceries or prescription drugs?
Many food items sold at grocery stores qualify for a reduced state rate, and prescription drugs are generally exempt. Local taxes may still apply depending on the jurisdiction. Confirm exemptions with official Missouri DOR guidance.
When should I use extract mode instead of add mode?
Use add mode when you know the shelf or invoice price before tax. Use extract mode when you have a receipt total that already includes tax and need to find the pre-tax base or the tax portion.
Why do St. Louis and Kansas City rates differ?
Missouri allows local option sales taxes at the city and county level. St. Louis City, Kansas City, Springfield, and other municipalities each set different local add-on rates, which is why combined totals vary across the state.
Are online purchases taxed the same way?
Remote sellers with Missouri nexus generally collect tax at the delivery destination rate. Marketplace facilitators may collect on behalf of third-party sellers. Use the jurisdiction where the buyer receives the goods.

Resources and references

The formulas and methods in this calculator were checked against these independent sources.