How to Choose the Best Legal Structure for Your Small Business

How you set up your business isn’t just a formality—it can affect everything from how you’re taxed to how much personal risk you take on. If you're running a solo business, the right legal structure helps you manage liability, stay compliant, and potentially save money at tax time. 

When it comes to choosing the right business structure, there’s no one-size-fits-all answer. The right choice for your needs depends on how you plan to run your business, what kinds of clients you work with, and whether you see yourself grow your small business in the future. 

Let’s start with the basics. 

What Is a Legal Business Structure?

Your business structure is the legal foundation of your company. It defines who owns what, how taxes are filed, and what happens if your business ever faces a lawsuit. It also determines how you’re allowed to operate—from signing contracts and hiring staff to raising funds or issuing payments.  

In this guide, we’re assuming you: 

• Are the sole owner (no partners or shareholders) 
• Offer services, not products 
• Don’t need outside investors 
• Prefer to keep admin and red tape to a minimum 
• Want to limit personal legal and tax exposure 

If that sounds like you, here’s a breakdown of four common business structures for independents—plus the pros and cons of each one. 

Learn More: Filing Self-Employed Taxes: What You Need 

4 Types of Business Structures for Small Business 

Each of the four business structures below has its own pros and cons, with tax implications to consider. As you read through the options, think about your long-term goals, how much flexibility you want, and the level of responsibility you're willing to take on. 

1. Sole Proprietor

Many independents start out as sole proprietors. For tax purposes, you typically operate under your personal Social Security number, but you can apply for an Employer Identification Number (EIN) using IRS Form SS-4. 

The business is generally operated under your legal name. If you want to use a different name, you’ll need to register a “Doing Business As” (DBA) name with your state or local government. Rules for DBA registration vary by state. You may also choose to apply for a federally registered business trademark or trade name. 

Sole Proprietor Advantages: 

• You file taxes using Schedule C as part of your personal return, which simplifies the filing process. 
• There’s no need to formally register your business (beyond local business licenses or DBAs). 
• It's a flexible option if you’re working as an independent contractor part-time while holding a full-time job. 

Sole Proprietor Disadvantages: 

• You have no legal separation between personal and business assets. If your business is sued or goes bankrupt, your personal assets are at risk. 
• Being a sole proprietor may not be viewed as credible by larger or corporate clients. 
• You’re personally liable for all taxes and debts—there’s no liability shield. 

2. Limited Liability Company (LLC)

A Limited Liability Company (LLC) gives you a layer of legal protection while keeping things relatively simple. It separates your business assets from your personal ones—so long as you treat them that way. 

A single-member LLC is still taxed like a sole proprietorship unless you elect otherwise, but it offers more protection if something goes wrong. 

LLC Advantages: 

• LLCs are easier and less expensive to set up and require less paperwork than corporations. 
• A single-member LLC is treated as a disregarded entity for tax purposes (unless an election is made) but offers legal protection from certain debts and judgments. 
• There’s a common “first structure” for independents seeking basic liability protection. 

LLC Disadvantages: 

• Personal guarantees, co-mingling funds, or signing contracts personally can expose you to liability, negating the benefits of the LLC (“piercing the corporate veil”). 
• You must maintain separation between personal and business finances to retain liability protection. 
• Profits are subject to self-employment taxes and reported on your personal return. Some states also impose a franchise tax on LLCs. 

3. Subchapter S Corporation (S Corp)

An S Corporation (S Corp) is a tax classification, not a type of entity—but many LLCs elect to be taxed as S Corps. This structure can reduce your self-employment tax burden if handled correctly. 

If eligible, your business will file Form 1120S. Profits are reported to the owner using Schedule K-1 and taxed at the personal level—resulting in only one level of taxation. 

S Corp Advantages: 

• Pass-through taxation means the business itself isn’t taxed—only shareholders are. 
• Owners must pay themselves a reasonable salary. Any remaining profit is passed through and not subject to self-employment tax, potentially saving money on payroll taxes. 
• S Corps can help high-earning independents retain more income after taxes. 

S Corp Disadvantages: 

• The IRS scrutinizes S Corp salaries. Paying yourself too little to avoid payroll tax can trigger audits, back taxes, and penalties. 
• There’s added complexity in maintaining payroll and filing corporate tax returns. 
• These typically require more administrative work and bookkeeping compared to a sole proprietorship or standard LLC. 

4. C Corporation (C Corp)

A C Corporation (C Corp) is a more formal structure used by many larger businesses, but it can also work for experienced independents who want flexibility in how they manage income and benefits. 

C Corps are taxed as separate legal entities. You pay yourself a salary and can take advantage of fringe benefits, but any remaining profits are taxed again when distributed as dividends—this is known as double taxation. 

C Corp Advantages: 

• C Corps are taxed as separate legal entities and you only pay FICA taxes on wages, not on business profits. 
• They provide liability protection by separating personal and business assets (with exceptions as noted above). 
• Fringe benefits like Health Reimbursement Arrangements (HRAs) are deductible. 

C Corp Disadvantages: 

• Subject to double taxation—once on corporate profits and again on dividends paid to shareholders. 
• Some tax deductions available to other structures may not apply. 
• The administrative burden is greater than with sole proprietorships, LLCs, or S Corps. 

The information provided in the MBO Blog does not constitute legal, tax, or financial advice. It does not consider your personal circumstances, goals, legal or financial situation. Before acting on any information from the MBO insights page, consult with a qualified professional advisor.