If your business makes taxable sales to customers in Missouri, you may need to register for a Missouri Retail Sales Tax License before collecting sales tax. This 2026 guide explains who must register, what information you need, and how to complete the registration process through MyTax Missouri.
For broader information about Missouri sales tax rules, rates, and taxability, see the Missouri Sales Tax Guide. For details on filing deadlines and how to submit returns, see the Missouri Sales Tax Filing Guide.
Quick answers: Missouri sales tax registration
A quick overview of the authority, registration portal, nexus threshold, and other essentials for registering in Missouri.
| Fact | Detail |
|---|---|
| Authority | Missouri Department of Revenue |
| Registration portal | MyTax Missouri |
| Economic nexus threshold | $100,000 in annual sales or 200 separate transactions into Missouri |
| Registration fee | Free |
| Renewal period | No periodic renewal required |
Who must register for Missouri sales tax
You must register for a Missouri Retail Sales Tax License if your business has a sales tax nexus in the state. This usually applies when a business:
- Exceeds the economic nexus threshold of $100,000 in annual sales or 200 or more separate transactions into Missouri in the current or previous calendar year, or;
- Has a physical presence in Missouri, such as an office, employee, warehouse, or inventory stored in the state.
Missouri's dual threshold means you must register once you cross either the dollar amount or the transaction count, whichever comes first.
Once you exceed the threshold, you should register before making further taxable sales in Missouri. If you're unsure whether your business has nexus, see the Missouri Sales Tax Guide for a broader explanation.
How to register for Missouri sales tax
Sellers can register online through MyTax Missouri, the state's centralized tax portal managed by the Missouri Department of Revenue. This is the same portal you will use to file returns and make payments after registration.
Information you need before registering
Before applying for a Missouri Retail Sales Tax License, have this information ready:
- Your Social Security number (if registering as a sole proprietor with no employees)
- Your Employer Identification Number (EIN), if your business has one (required for corporations, partnerships, and most LLCs)
- North American Industry Classification System (NAICS) code for your primary business activity
- The date of your first sale in Missouri
- Your business address and any Missouri locations, if applicable
Registration steps
Follow these steps to register for a Missouri Retail Sales Tax License.
1. Create your online login
Set up your MyTax Missouri account credentials.
- Choose a username and password
- Set up your security information
- This login is used for all future filings, payments, and account management
If you already have a MyTax Missouri account, you can add a sales tax account to your existing login.
2. Provide your business information
Enter your business name, address, type of entity, and any Missouri locations.
- Remote sellers without a Missouri location should indicate they are selling remotely into the state
- Missouri uses destination-based sourcing, meaning you charge tax based on where the buyer is located
- Missouri has extensive local taxes from cities, counties, and special districts, so the combined rate will vary by buyer location
3. Registration fee
Registration for a Missouri Retail Sales Tax License is free. There is no fee to apply.
4. Submit your application
Review your entries and submit the application.
- You will receive an on-screen confirmation after submission
- A confirmation email is typically sent shortly after submission
5. Receive your Missouri Retail Sales Tax License
Once approved, you will receive:
- Your Missouri Retail Sales Tax License number (used for filing and payments)
- Your assigned filing frequency (monthly, quarterly, or annually, based on expected tax liability)
- Access to MyTax Missouri for filing, payment, and account management
What happens after registration
After registering, you must begin collecting Missouri sales tax on taxable sales and file returns based on your assigned filing frequency. Returns are generally due on the 20th of the month following the reporting period.
Missouri has some of the most extensive local tax structures in the US. City, county, and special district taxes stack on top of the 4.225% state rate, and combined rates can exceed 10% in some areas. Be sure to apply the correct combined rate for each buyer's location. SaaS and digital goods are generally taxable in Missouri.
➡ Learn more about Missouri sales tax rates, taxability, and nexus in the Missouri Sales Tax Guide
➡ See how to file and pay Missouri sales tax in the Missouri Sales Tax Filing Guide
Note: At Quaderno we love providing helpful information and best practices about taxes, but we are not certified tax advisors. For further help, or if you are ever in doubt, please consult a professional tax advisor or the local tax authorities.
Need help registering across multiple states?
Watch our webinar: US Sales Tax Registration & Filing Tips + AMA. Learn how international sellers register, file, and manage US sales tax compliance across multiple jurisdictions.
Note: At Quaderno we love providing helpful information and best practices about taxes, but we are not certified tax advisors. For further help, or if you are ever in doubt, please consult a professional tax advisor or the tax authorities.
