Missouri Sales Tax Calculator

Missouri's state sales tax rate is 4.23%. With local taxes (avg 4.19%) the combined rate averages 8.42%, reaching ~10.1% in some areas.

Missouri lets cities, counties, and special districts stack their own sales taxes on top of the state rate, so totals in St. Louis or Kansas City run well above the base. Use this Missouri (MO) sales tax calculator — also handy as a "sales tax calculator Missouri" or "MO state sales tax" tool — to add or remove tax at the 4.23% state rate. Pick another state from the dropdown anytime.

Discount Percentage Sales Tax VAT

Missouri Sales Tax Calculator (Add Tax) ?Calculates the Final Price including Tax and the Sales Tax value. Input the 'Before Tax Price'. The rate is pre-set to the Missouri state rate (4.23%); tick 'Include Local Tax' for the average combined rate, or pick another state. Average local rates vary by city/ZIP — check your exact local rate. For educational purposes only.

Inputs

Before Tax Price ($):

Tax Rate (%): ← type here OR

Select a State:

Include Local Tax: (avg 4.19% in MO)

Results

Final Price Including Tax ($):

Sale Tax($):

Note: all rates used in this calculator are for educational purposes only. The average local rate is a statewide average — your exact local rate varies by city/ZIP.

How to calculate Missouri sales tax

To find the sales tax on a purchase in Missouri at the 4.23% state rate:

  • Convert the rate to a decimal: 4.23 ÷ 100 = 0.0423.
  • Multiply by the price: $100 × 0.0423 = $4.23 (sales tax).
  • Add it back: $100 + $4.23 = $104.23 (final price).

If your city or county adds a local tax, tick Include Local Tax to use Missouri's average combined rate of 8.42%, or type your exact local rate. To work backwards from a receipt total, use the Remove Tax tab.

Final price = before-tax price × (1 + rate (%) / 100)

Sales tax by state

Compare other states or switch the dropdown above. Pilot states:

Missouri  |  Tennessee  |  Arkansas  |  Texas  |  New Jersey  |  Washington  |  Minnesota  |  Florida

← Back to the general Sales Tax Calculator (all 50 states).

Taking a percentage off a price instead of adding tax? Use the Discount Calculator.

References