Missouri · Sales tax registration
Missouri sales tax registration, done for you.
Form 2643, the Missouri Tax Registration Application, covers sales and use tax alongside withholding and corporate income tax. The detail worth knowing before you file is that the registration number Missouri issues is permanent and not transferable, which matters the day the business is sold.
Last updated:
Who you are dealing with
Missouri Department of Revenue
- Handles:
- Sales and use tax, and employer withholding and corporate income tax on the same application
- System:
- MyTax Missouri
- Form:
- Form 2643, the Missouri Tax Registration Application. Filed electronically through MyTax Missouri, or posted to PO Box 357, Jefferson City MO 65105-0357, or faxed to 573-522-1722. Transient employers use Form 2643T
State fee. $0 to register. A bond may be required in some circumstances, which is money held rather than a fee. Our flat fee covers preparing and filing the application.
Our fee. $180 per state, flat. State fees are passed through at cost.
When you have to register
Register before making taxable sales in Missouri. The same application covers withholding if you are also hiring, which is worth doing together rather than twice.
What comes next
Worth knowing now: Missouri requires a final return even when there is no tax to report, and Form 5633 is per location rather than per business, so the address you register matters at the end as well as the start.
How long it takes
Missouri does not publish a turnaround we could confirm. MyTax Missouri is the faster route and leaves you a record, where the posted or faxed Form 2643 does not.
What we do
We work out which accounts you need, submit each registration, and hand you the account numbers, rates, and deposit schedules your payroll system asks for. One flat price per state, and any state fee passed through at cost. You keep the client. We never email them.
What makes Missouri harder than average
- The number is permanent and not transferable. Missouri says so directly. A buyer does not inherit your registration, which is the same trap Wisconsin sets with its seller's permit and the opposite of what most people assume in an asset sale.
- One application, several tax types, one agency it does not reach. Form 2643 covers sales, use, withholding, and corporate income tax at Revenue. Unemployment is the Division of Employment Security and is registered separately.
- There is a separate form for transient businesses. Form 2643T applies to those not permanently located in Missouri. Using the standard form when the transient one applies creates a registration that does not match reality.
- Registration is per location, and so is closure. Form 5633 asks for the physical address of the location being closed, so a multi-site business needs its registrations organized deliberately rather than accumulated.
How Missouri compares
If Missouri is one of several states on the list, the order you register in changes what each one asks for.
Questions and answers
Can a buyer use my Missouri registration number?
No. Missouri states the number is permanent and not transferable. The buyer registers in their own right, and the seller still has closure obligations.
Does one form cover sales tax and payroll?
Form 2643 covers sales and use tax, employer withholding, and corporate income tax at the Department of Revenue. Unemployment insurance is separate at the Division of Employment Security.
What is Form 2643T?
The transient version, for businesses not permanently located in Missouri. If that describes you it is the correct form rather than the standard 2643.
Is there a fee?
No fee to register. A bond may be required in some circumstances, which is money held rather than a charge.
What do you need from me to start?
The legal name and FEIN, entity type, the physical Missouri addresses you will sell from, what you sell, the date taxable sales begin, and whether you are permanently located in Missouri.
Also in Missouri
Agency details verified 2026-08-03
About the provider
Regcrest LLC is a document preparation and filing service based in Allentown, Pennsylvania, founded in 2026. It prepares and files state payroll and sales tax registrations, account closures, and resale certificates on behalf of the businesses that instruct it, and works behind accounting firms, bookkeepers, and payroll providers as well as directly with businesses.
Regcrest LLC is not a CPA firm and not a law firm. It gives no tax or legal advice. It files in all 50 states, and publishes a full page for the 29states it has verified against the agency's own material so far, each one showing the date it was checked. For anything that turns on your specific situation, ask a licensed accountant or attorney.