Irondale, Missouri sales tax rate: 7.725%
Last updated Checked monthly
The sales tax rate in Irondale, Missouri is 7.725%. That’s the 4.225% state rate plus 3.5% in local taxes. It’s higher than 174 of the 228 Missouri cities we checked, and 2 other cities pay the same.
Calculated by the 
Sales Tax APIThe same engine Zamp customers use.Irondale combined rate
7.725%
- Missouri state
- 4.225%
- Washington CountyCounty
- 2%
- IrondaleCity
- 1.5%
Irondale sales tax calculator
Enter a price and what you’re selling.
- MissouriState · 4.225%$4.23
- Washington CountyCounty · 2%$2.00
- Irondale City (Washington County)City · 1.5%$1.50
Charging this at checkout? Zamp calculates it on every order and files the returns.
Book a demoIrondale sales tax rate breakdown
State, county and city taxes add up to 7.725%.
| Jurisdiction | Type | Rate |
|---|---|---|
| State of Missouri | State | 4.225% |
| Washington County | County | 2% |
| Irondale City (Washington County) | City | 1.5% |
| Combined rate | 7.725% |
Rate history
- July 20236.725%
- July 20246.225%
- July 20256.225%
- July 20267.725%
- Today7.725%
Changed since July 2023.
Sales tax near Irondale
Closest cities
- Potosi9 mi6.225%
- Iron Mountain Lake10 mi5.85%
- Fredericktown28 mi4.225%
- Annapolis33 mi4.225%
- Miramiguoa Park35 mi6.475%
- Parkway38 mi6.475%
- Des Arc38 mi4.225%
- Steelville38 mi4.225%
Elsewhere in Washington County
- Potosi6.225%
Charge the right rate in Irondale, 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.
Irondale 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 Irondale, Missouri?
The combined sales tax rate in Irondale is 7.725% as of November 2, 2026. It’s made up of 4.225% Missouri state tax, 2% Washington County, 1.5% Irondale City (Washington County).
Does the sales tax rate vary within Irondale?
Irondale has no special-district taxes, so most addresses in the city pay the same 7.725%: Missouri’s 4.225% plus 2% county tax plus 1.5% city tax. This rate was calculated for the centre of Irondale; the calculator prices any exact address.
Is SaaS taxable in Irondale?
No.
Do online sellers have to collect sales tax in Irondale?
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 the centre of Irondale. Rates are checked monthly and are for information, not tax advice.
Sales tax, off your plate.
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