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Business license requirements in St. Louis, Missouri depend on your industry, business activities, entity type, and location. Most businesses need several types of licenses to operate legally.
A general business license or business tax certificate from the City of St. Louis is typically required for any business operating within city limits.
State-level tax registrations, professional licenses, and regulatory filings required by Missouri agencies.
If you provide professional services in St. Louis (legal, medical, engineering, accounting), you must hold the appropriate state-issued credentials.
Your business location in St. Louis must comply with local zoning ordinances. Home-based businesses may need a home occupation permit.
Food service, health, fire, alcohol, and other industry-specific permits may be required depending on your business activities in St. Louis.
Businesses in regulated industries (alcohol, firearms, broadcasting, transportation) must also obtain federal licenses and permits.
City of Saint Louis, License Collector's Office
1200 Market Street, City Hall Room 102-104
Saint Louis, MO 63103
Mon-Fri 8:00 AM - 5:00 PM
Information verified as of June 17, 2026
Web VerifiedSaint Louis requires a Graduated Business License (GBL) for all businesses, with the license term running June 1 through May 31. The fee is based on employee count — starting at $200 for up to two employees and scaling to $37,500 for firms with more than 500 employees. Late filing penalties are 5% per month up to 25%, with an additional 20% penalty on amounts unpaid after 60 days.
June 1
Renews annually
5% per month late filing penalty up to 25%; 20% penalty on unpaid amounts after 60th day; no license issued until all penalties paid
Saint Louis' Graduated Business License fee scales from $200 (up to 2 employees) to $37,500 for firms with 500+ employees
New businesses starting June 1-January 1 pay $200 initial fee; those starting after January 1 pay $100
Late filing penalty is 5% per month up to 25%; unpaid balances after 60 days incur an additional 20% penalty
No business license will be issued until ALL late filing and payment penalties are fully paid
No general exemptions — all businesses operating in the City of Saint Louis must obtain a Graduated Business License.
Saint Louis requires a Graduated Business License (GBL) for all businesses. License term runs June 1 through May 31. Initial fee is $200 (or $100 if starting after January 1). Ongoing fees are based on employee count, scaling from $200 to $37,500 for 500+ employees.
Navigating business licensing in St. Louis, MO doesn't have to be complicated. CLS provides end-to-end licensing support so you can focus on what matters—running your business.
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Businesses found operating without required licenses in St. Louis, MO can face penalties ranging from late-fee surcharges to four-figure fines per violation, cease-and-desist orders, revocation of existing permits, inability to enforce contracts, and in some cases criminal misdemeanor charges. Don't risk your business.
Get a free compliance assessmentEvery city has different fees, deadlines, and penalties. Miss your filing window and penalties range from late-fee surcharges to four-figure fines — and operating unlicensed can mean forced closure. Search below to get the exact requirements for your location.
Not sure what you need? Get a free compliance assessment — our licensing experts will identify every requirement for your business.
Follow these steps to obtain your St. Louis business license. Requirements vary by business type, but this is the general process for most businesses in St. Louis, MO.
Before applying for a St. Louis business license, determine your entity type (sole proprietorship, LLC, corporation, partnership). Your structure affects which licenses you need and how you register with Missouri and the IRS.
Verify that your business location in St. Louis is zoned for your intended use. Contact the St. Louis Planning Department for zoning verification. Home-based businesses typically need a home occupation permit.
Register your business entity with the Missouri Secretary of State (if applicable), obtain an EIN from the IRS, and register for state tax obligations including sales tax and employer withholding.
Submit your business license application to the City of Saint Louis, License Collector's Office. Online applications are available. Include all required documentation and fees.
Depending on your industry in St. Louis, you may need additional permits — health department permits for food service, fire department approval, alcohol licenses, professional licenses, or industry-specific certifications.
Once issued, display your St. Louis business license prominently at your place of business. Licenses renew annually. Track renewal deadlines to avoid penalties and late fees.
CLS also provides business license services in these Missouri cities.
St. Louis business license information last verified June 17, 2026. Fees, deadlines, and requirements are subject to change. Verify with St. Louis or contact CLS for current requirements.