Business Structures and Their Tax Treatment
In the U.S., businesses typically form under one of the following structures:
Most business structures require that you obtain an Employer Identification Number (EIN) from the Internal Revenue Service (IRS). This is in addition to any paperwork needed to establish a business name, pay employees, or remit sales tax. The paperwork mentioned below refers to whatever is required to legally establish and/or maintain the business entity.
Sole Proprietorships
Sole proprietorships are the least formal structure. You can create a sole proprietorship by performing business activities without filing any–or very little–paperwork with the government.
Partnerships
Partnerships come in two common forms in addition to general partnerships (GPs): limited partnerships (LPs) and limited liability partnerships (LLPs). LPs have one general partner and several limited partners, while LLPs have only limited partners. You can typically form a partnership without filing anything. However, you need to adopt a partnership agreement and file partnership tax information.
Corporations
You form corporations by filing Articles of Incorporation with your secretary of state. Those with ownership interests in a corporation are shareholders. The default corporation is a C corporation. You may elect to treat your entity as an S corporation if:
You have 100 or fewer shareholders
None of your shareholders are corporate entities
You only offer one class (type) of stock
You have no nonresident noncitizen shareholders
Each shareholder agrees to the election
C corporations involve “double taxation” because the government taxes dividends shareholders receive after the entity pays taxes. S corporations are not doubly taxed, and earnings count as personal income.
LLCs
You form an LLC by filing a Certificate of Formation or Articles of Organization with your state’s secretary of state. Those with ownership interests in an LLC are called members.
If your LLC has only one member, it defaults to sole proprietorship treatment for tax purposes. If it has two or more members, it defaults to partnership treatment. Alternatively, you may elect to treat it as a partnership or corporation.
Nonprofits
Nonprofit organizations must qualify for nonprofit status and its attendant tax exemptions. To form a nonprofit, register with your secretary of state; then apply for nonprofit status from the IRS.
Employer Identification Numbers (EINs)
Your business’s EIN identifies it for federal tax purposes. You need an EIN if you:
Have employees
Use a corporation, partnership, or nonprofit structure
File employment, excise, or alcohol, tobacco, and firearms tax returns
Essentially, you need an EIN if more people than you are involved in operating your business. Many banks also require an EIN for individuals or entities wanting to open a business bank account.
Tax Treatment by Business Structure
Different business structures bring advantages and disadvantages, especially in the tax treatment of earnings:
Taxed as self-employment—sole proprietorships and an LP’s general partner
Taxed as personal income—LP partners with limited liability, LLPs, and S corporations
Taxed at the entity level—C corporations
Tax-exempt: nonprofits
LLCs are taxed based on whether you elect to treat them differently than the default. S corporation shareholders pay self-employment tax on their salary, and the IRS may scrutinize whether the salary amount received is reasonable.