To set up payroll in Missouri requires two state agency registrations plus awareness of local earnings taxes in Kansas City and St. Louis. We handle the state registrations and assess local requirements.
Here are the state agencies you need to register with as an employe in your state. We handle all registrations on your behalf.
Handles state income tax withholding registration for all Missouri employers.
Handles Unemployment Insurance (UI) registration for all Missouri employers.
A quick overview of what's involved before you run your first payroll.
You provide the business info — we do the rest.
Tell us about your business — name, EIN, entity type, and start date. Takes about 5 minutes.
Tell us about your business — name, EIN, entity type, and start date. Takes about 5 minutes.
We register your business with the appropriate state agencies through official portals.
We deliver your account numbers and filing details — ready to load into your payroll system.
Flat fee, no surprises. We work inside your existing payroll system.









Common questions about registering for payroll taxes.
Yes- if you have employees working in your state, you are required to register with the appropriate state tax agencies before running your first payroll. Failing to register can result in penalties and back taxes.
Yes — both Kansas City and St. Louis impose a 1% earnings tax on wages earned within city limits and on residents working outside the city. If your employees work in either city, you must register and withhold the local earnings tax. We assess your locations and include local tax registration where applicable.
We'll need your business name, EIN, entity type, physical address, start date of payroll, and owner information. You provide it once through our intake form and we handle everything from there.
+Processing times vary by state. Most registrations are completed within 5–10 business days. We keep you updated throughout the process and notify you as soon as your credentials are ready.