Do you need a business license to run a business in the US?

Yes, in most cases, you will need some form of business license or permit to legally operate a business in the United States. The specific requirements vary widely depending on the type of business, its location, and the regulations set by local, state, and federal governments. Here are some general considerations:

1. Local Licenses and Permits: Most businesses will need to obtain licenses or permits from the city or county where they are located. This could include a general business operation license, a zoning permit, a health department permit (especially for businesses like restaurants or food service), or a home occupation permit if you're operating a business from your home.
2. State Requirements: Depending on your business type and location, you might also need to get licenses from the state. This is common for businesses that require professional qualifications, such as real estate agencies, law firms, healthcare providers, and construction contractors. States also regulate certain types of businesses like those selling alcohol, tobacco, or firearms, which require specific state-issued licenses.
3. Federal Regulations: Some types of businesses require federal licenses or permits. These businesses include those that manufacture or sell alcohol, tobacco, or firearms; those that transport goods or people across state lines; and those that are involved in broadcasting, drug manufacturing, or meat preparation.
4. Sales Tax License: If you're selling goods or services that are subject to sales tax, you'll likely need to obtain a sales tax permit from your state's revenue agency. This permit allows you to collect sales tax from customers and remit it to the state.
5. Professional and Occupational Licenses: Certain professions require specific licenses that demonstrate the holder's qualifications in a particular field. This includes doctors, lawyers, accountants, hairdressers, and many others.

It's important to check the specific licensing requirements for your business type and location by consulting local government websites, the state’s department of commerce or business regulation, and any relevant federal agency websites. Starting a business without the necessary licenses can result in fines, penalties, and possibly having to cease operations until the proper licenses are obtained.