How Your Business Structure Affects Your Taxes
The legal structure you choose for your business is one of the most consequential tax decisions you will make. Whether you operate as a sole proprietor, form an LLC, elect S-Corp status, or incorporate as a C-Corp, each entity type carries different tax rules, rates, and filing requirements. Choosing the wrong structure can mean paying thousands more in taxes than necessary.
Sole Proprietorship: The Default Structure
If you earn money from a business and have not formed a legal entity, the IRS considers you a sole proprietor. All business income and expenses flow through your personal tax return on Schedule C. You pay self-employment tax of 15.3 percent on net earnings in addition to regular income tax. There is no separation between you and the business for tax purposes.
LLC: Flexibility Without Complexity
A limited liability company provides legal protection for your personal assets while offering tax flexibility. By default, a single-member LLC is taxed as a sole proprietorship and a multi-member LLC is taxed as a partnership. However, an LLC can elect to be taxed as an S-Corp or C-Corp if that saves money. This flexibility makes the LLC the most popular structure for small businesses.
S-Corp: Reducing Self-Employment Tax
An S-Corp passes income through to shareholders, but with an important distinction. Owners who work in the business must pay themselves a reasonable salary, which is subject to FICA taxes. Any remaining profit can be distributed as dividends, which are not subject to self-employment tax. For profitable businesses, this salary-plus-distribution strategy can save significant money on payroll taxes.
- Pass-through taxation avoids double taxation
- Reasonable salary requirement enforced by IRS
- Distributions above salary avoid FICA taxes
- Limited to 100 shareholders, all must be US persons
- QBI deduction may apply to pass-through income
C-Corp: Double Taxation but Lower Rates
A C-Corp pays its own income tax at a flat 21 percent federal rate. When profits are distributed as dividends, shareholders pay tax again at their individual rate. This double taxation is the main drawback. However, C-Corps offer advantages like retaining earnings at the 21 percent rate, broader fringe benefit deductions, and no restrictions on ownership structure. Tech startups often choose C-Corp status for these reasons and for venture capital compatibility.
Making the Right Choice
The best structure depends on your income level, growth plans, and how you plan to use profits. Sole proprietorships work well for low-revenue side businesses. LLCs suit most small businesses. S-Corp election makes sense when net income consistently exceeds 50,000 to 60,000 dollars. C-Corps are best for businesses seeking outside investment or planning to retain significant earnings. Consult a tax professional before making structural changes, as some elections are difficult to reverse.
References
- IRS: Business Structures (irs.gov/businesses/small-businesses-self-employed/business-structures)
- IRS: S Corporations (irs.gov/businesses/small-businesses-self-employed/s-corporations)
- SBA: Choose a Business Structure (sba.gov/business-guide/launch-your-business/choose-business-structure)
