General contractors

Missouri does not have a general contractors license. General contractors are licensed and regulated at the local level, Contact your local (county, city, township) government offices for specifics regarding local licensing and regulations. Remodeling contractors businesses fall under the same guidelines.

County commissions control construction, issue building permits etc.:

Corporate surety bonds are the preferred method of guaranteeing the performance of financial obligations of others. These guarantees include contractor performance and payment bonds, financial guarantee bonds, license and permit bonds and many others.

Contact your insurance agency for more information or:
The Surety Bond Association of America
1101 Connecticut Avenue, NW Suite 800
Washington DC 20036

For out of state contractors doing temporary projects in Missouri only:

Legal structure:

Doing business in Missouri under your state’s legal structure: – Name availability check

Instructions and forms for registering as a For Profit Corporation, Limited Liability Company, Limited Partnership, Limited Liability Limited Partnership can be found by searching at

Transient Employer Tax Registration – Out of state companies who temporarily transact any business in the state of Missouri are defined as transient employers and are required to register, file a bond and remit withholding tax to the Missouri Department of Revenue.

Form 2643: Register for Withholding Tax (Transient Employer – Bond required) and Missouri Corporate Income Tax (if a corporation).

State licensing requirements for specific construction trades:

Boiler Pressure Safety Program – Heating

Boiler: A pressurized vessel in which water is heated, steam is generated, steam is superheated, or any combination of these, under pressure or vacuum by the direct application of heat. The term boiler includes fired units for heating or vaporizing liquids other than water where these units are separate from processing systems and complete within themselves.

Boiler & Pressure Vessel Unit
Division of Fire Safety
PO Box 844
Jefferson City MO 65102

Air conditioning:
US EPA, Air & Toxics Division
901 North 5th Street
Kansas City KS 66101
913-551-7623 or

Description: Certification of Technicians, Types I, II, III, and universal to work on air-conditioning and refrigeration equipment; (test required) fee is set by the testing organization.

MVAC Technician Certificate required for those working on vehicle air conditioners.

Persons and business entities engaged in either HVAC or MVAC work must register their recycling/recovery equipment with this office.

Highway excavation:
Permit Reviewer
MO Department of Transportation
PO Box 270
Jefferson City MO 65102
888-ASK-MODOT (275-6636)

Permit Application Supplement: Are Other Environmental Permits Needed? – Dept of Natural Resources Environmental Permits and How to Obtain Them:

Legal structure

Anyone conducting business in the State of Missouri under a name other than their own legal name (e.g., John Doe), must register the business name with the Missouri Secretary of State. Missouri law allows businesses to operate under four forms or organization:

  • Sole proprietorship
  • Partnership – general and limited
  • Corporation – C-Corp; S-Corp; Professional, Not-for-Profit; Foreign Corporation
  • Limited Liability Company – LLC

Each structure has its own advantages and disadvantages and there are many modifications and variations within these forms. The key to selection revolves around the concept of liability and taxation. You must decide which of these structures best suits your business. In choosing your business structure, consult with a qualified accountant and/or attorney who are familiar with your resources and objectives.

A description of the forms of organization and some of the advantages and disadvantages are discussed in Legal structures and Starting a New Business in Missouri. Choosing a particular structure does not necessarily determine how the business will be taxed.

The Licenses and registration checklist is a guide to help you with the licensing and registration requirements for starting your new business.

You can download forms on the Web at or contact the Secretary of State’s Office at 573-751-4936.


Understanding the taxes that apply to your business and how to meet the legal requirements of those taxes is critical. Consultation with an accountant or attorney is advisable.

Tax considerations are essential during the formation of a new business and during its entire life. When a business is just starting out, it may have little or no income or assets and the choice of structure may not seriously affect its tax liability. However, as the business grows, the tax implications become more significant.

Doing Business in Missouri: Legal Formation identifies the state and federal forms that must be filed for different business structures and compares the tax liabilities for the most common business structures.

For more information on taxes and access to printable copies of the required forms visit: Doing Business in Missouri: Taxes.

Hiring employees

Obtain a copy of  Employer’s Tax Guide (PDF)  from or call 800-829-3676. This guide (“Circular E”) explains federal tax withholding and Social Security tax requirements for employers as well as containing current withholding tables for you to use to determine how much federal income tax and Social Security tax is to be withheld from each employee’s paycheck.

For a complete discussion on hiring employees, your responsibilities, and access to the required forms, refer to: Doing Business in Missouri: Hiring Employees.

Business resources and guides

You may also find the following information helpful as you begin your business:

  • Starting a New Business in Missouri is an excellent publication on the process of starting and operating a business in Missouri.
  • Evaluating Your Business Idea is a simple questionnaire-formatted document that helps you think through the elemental considerations in starting a business.
  • Guide to Writing a Business Plan provides a short, but thorough introduction to the process of writing a business plan and provides a simple outline of the contents of a standard plan.
  • is a network of key business resource providers in Missouri. The website contains a vast array of helpful documents, links and information on starting and operating your small business as well as a calendar of upcoming training and educational events throughout Missouri. Find a business counselor near you.
  • Contact your local (county, city, township) government offices early in the planning stages of your business. The requirement for local licenses and permits vary by county and city. Most cities, and some counties, require businesses to be licensed. Check with the city business/merchant license office and/or the county collector’s office for the requirements in your area. Be sure to check with the local city and/or county planning/zoning department to make sure that the site you have selected for your business is zoned to accommodate the activities of your business. These offices can be found in your local phone directory.
  • Missouri Lawyer Referral Service (
  • Missouri Society of Accountants 800-959-4276  or
  • The Missouri Society of CPAs 800-264-7966 or