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Augusta, Missouri sales tax rate: 5.95%
Last updated Checked monthly
The sales tax rate in Augusta, Missouri is 5.95%. That’s the 4.225% state rate plus 1.725% in local taxes. It’s higher than 87 of the 228 Missouri cities we checked, and 1 other city pays the same.
Augusta combined rate
5.95%
- Missouri state
- 4.225%
- St. Charles CountyCounty
- 1.725%
Augusta sales tax calculator
Enter a price and what you’re selling.
- MissouriState · 4.225%$4.23
- St. Charles CountyCounty · 1.725%$1.73
Charging this at checkout? Zamp calculates it on every order and files the returns.
Book a demoAugusta sales tax rate breakdown
State and county taxes add up to 5.95%.
| Jurisdiction | Type | Rate |
|---|---|---|
| State of Missouri | State | 4.225% |
| St. Charles County | County | 1.725% |
| Combined rate | 5.95% |
Rate history
- July 20235.95%
- July 20245.95%
- July 20255.95%
- July 20265.95%
- Today5.95%
No change since July 2023.
Sales tax near Augusta
Closest cities
- Union11 mi6.475%
- Saint Clair17 mi6.475%
- Parkway17 mi6.475%
- Wentzville17 mi8.45%
- O'Fallon17 mi7.95%
- Foristell17 mi7.95%
- New Haven18 mi8.725%
- Josephville19 mi5.95%
Elsewhere in Saint Charles County
- O'Fallon7.95%
- St. Charles7.95%
- Wentzville8.45%
- Foristell7.95%
- Flinthill6.95%
- Josephville5.95%
Charge the right rate in Augusta, on every order.
Zamp calculates tax at each customer’s address, then files and pays every Missouri return for you, with a sales tax team you can call.
Augusta sales tax questions.
Still have questions? Call us at 1-866-438-9267 or email us at support@zamp.com.
What is the sales tax rate in Augusta, Missouri?
The combined sales tax rate in Augusta is 5.95% as of November 2, 2026. It’s made up of 4.225% Missouri state tax, 1.725% St. Charles County.
Does the sales tax rate vary within Augusta?
Augusta has no special-district taxes, so most addresses in the city pay the same 5.95%: Missouri’s 4.225% plus 1.725% county tax. This rate was calculated for Augusta’s 63332 ZIP code; the calculator prices any exact address.
Is SaaS taxable in Augusta?
No.
Do online sellers have to collect sales tax in Augusta?
Yes, if they have nexus in Missouri: more than $100,000 in Missouri sales in the previous or current calendar year, or a physical presence in the state. They register with the Missouri Department of Revenue and charge the rate at the buyer’s address.
Sources. Missouri Department of Revenue · Zamp Sales Tax API, for Augusta’s 63332 ZIP code. Rates are checked monthly and are for information, not tax advice.
Sales tax, off your plate.
Zamp registers you, calculates every order at the customer’s address, files every Missouri return and handles notices, with a sales tax team you can call.
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