“What’s the best business structure for taxes?” is one of the questions we hear most. There’s no single right answer. The best structure depends on how much your business earns, how many owners it has, whether you plan to reinvest profits or distribute them, and how much liability protection you need. Here’s how the common options compare.
Sole proprietorship
The simplest setup: you and the business are the same for tax purposes. Profits are reported on Schedule C of your personal return, and you pay income tax plus self-employment tax (Social Security and Medicare) on the net earnings. Filing is simple, but there is no legal separation between you and the business, so your personal assets are exposed to business debts and lawsuits.
Partnership
Two or more owners sharing profits and losses. The partnership files an informational return (Form 1065) and each partner reports their share from a Schedule K-1. Partnerships offer flexibility in how profits are allocated, and general partners typically pay self-employment tax on their share. General partners also have personal liability for partnership obligations.
Limited liability company (LLC)
An LLC is a legal structure under state law, not a tax classification, which is what makes it so flexible. It gives owners liability protection, and it can be taxed in different ways:
A single-member LLC is taxed like a sole proprietorship by default.
A multi-member LLC is taxed like a partnership by default.
Any LLC can elect to be taxed as an S corporation (Form 2553) or as a C corporation (Form 8832).
For most small and growing businesses, an LLC is the starting point, and the real question becomes how it should be taxed.
S corporation election
An S corporation is a tax election available to LLCs and corporations. Profits still pass through to the owners’ personal returns, avoiding a separate corporate tax. The main attraction is self-employment tax savings: owners who work in the business pay themselves a reasonable salary subject to payroll taxes, and remaining profits can be taken as distributions that are not subject to self-employment tax.
The salary must be reasonable for the work you do. The IRS looks closely at owners who pay themselves too little.
S corporations are limited to 100 shareholders, generally U.S. individuals and certain trusts, and one class of stock.
Running payroll, filing a separate return, and keeping clean books add cost. The savings need to outweigh those costs, which usually means the business needs meaningful, consistent profit.
C corporation
A C corporation is a separate taxpayer. It pays a flat 21% federal tax on its profits, and dividends paid to shareholders are taxed again on their personal returns. That double taxation is the main drawback for closely held businesses. Losses also stay inside the corporation rather than flowing through to the owners.
A C corporation can still make sense when:
Most profits will be reinvested in the business rather than distributed
You plan to raise money from outside investors, who often prefer C corporations
You want to offer broader tax-favored fringe benefits
You may qualify for the qualified small business stock exclusion (Section 1202) on a future sale, which has strict requirements
Quick comparison
Starting out alone, testing an idea, low risk: sole proprietorship or single-member LLC
Liability protection with flexibility: LLC
Consistently profitable owner-operator: LLC taxed as an S corporation
Reinvesting profits, raising outside capital, or planning a stock sale: C corporation
Taxes aren’t the only factor
Structure also affects liability, paperwork, how easily ownership can change hands, and how investors and lenders see you. We work with your attorney on the legal side and help you model the tax side, so the structure fits both. This article is general information, not advice for your specific situation.