Iron Mountain Lake, Missouri sales tax rate: 5.85%
Last updated Checked monthly
The sales tax rate in Iron Mountain Lake, Missouri is 5.85%. That’s the 4.225% state rate plus 1.625% in local taxes. It’s higher than 82 of the 228 Missouri cities we checked, and 4 other cities pay the same.
Calculated by the 
Sales Tax APIThe same engine Zamp customers use.Iron Mountain Lake combined rate
5.85%
- Missouri state
- 4.225%
- St. Francois CountyCounty
- 1.625%
Iron Mountain Lake sales tax calculator
Enter a price and what you’re selling.
- MissouriState · 4.225%$4.23
- St. Francois CountyCounty · 1.625%$1.63
Charging this at checkout? Zamp calculates it on every order and files the returns.
Book a demoIron Mountain Lake sales tax rate breakdown
State and county taxes add up to 5.85%.
| Jurisdiction | Type | Rate |
|---|---|---|
| State of Missouri | State | 4.225% |
| St. Francois County | County | 1.625% |
| Combined rate | 5.85% |
Rate history
- July 20235.85%
- July 20245.85%
- July 20255.85%
- July 20265.85%
- Today5.85%
No change since July 2023.
Sales tax near Iron Mountain Lake
Closest cities
- Irondale10 mi7.725%
- Potosi19 mi6.225%
- Fredericktown20 mi4.225%
- Annapolis23 mi4.225%
- Des Arc28 mi4.225%
- Marquand31 mi4.225%
- Piedmont38 mi8.475%
- Saint Mary39 mi4.225%
Charge the right rate in Iron Mountain Lake, 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.
Iron Mountain Lake 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 Iron Mountain Lake, Missouri?
The combined sales tax rate in Iron Mountain Lake is 5.85% as of November 2, 2026. It’s made up of 4.225% Missouri state tax, 1.625% St. Francois County.
Does the sales tax rate vary within Iron Mountain Lake?
Iron Mountain Lake has no special-district taxes, so most addresses in the city pay the same 5.85%: Missouri’s 4.225% plus 1.625% county tax. This rate was calculated for Iron Mountain Lake’s 63624 ZIP code; the calculator prices any exact address.
Is SaaS taxable in Iron Mountain Lake?
No.
Do online sellers have to collect sales tax in Iron Mountain Lake?
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 Iron Mountain Lake’s 63624 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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