
Choosing the right business structure is a critical decision for entrepreneurs. At Clear View Business Solutions, we often get asked about the differences between a Single Member LLC vs Sole Proprietorship.
This blog post will break down the key aspects of both structures, helping you make an informed choice for your business venture.
A Single Member LLC is a limited liability company with only one owner. This business structure combines the simplicity of a sole proprietorship with the liability protection of a corporation.
To form a Single Member LLC, you must file Articles of Organization with your state’s Secretary of State office. In Arizona, the filing fee is $50. You’ll need to choose a unique business name that ends with “LLC” or “Limited Liability Company.” It’s also wise to create an operating agreement, even though you’re the sole owner.
Single Member LLCs must maintain separate business and personal finances. This means opening a dedicated business bank account and keeping meticulous records. Failure to do so can result in “piercing the corporate veil,” which could expose your personal assets to business liabilities.
The IRS treats Single Member LLCs as “disregarded entities” for tax purposes by default. This means you’ll report business income and expenses on Schedule C of your personal tax return, just like a sole proprietorship. However, you can elect to be taxed as a corporation by filing Form 8832.
Single Member LLC owners must pay self-employment taxes on their business income. Generally, the amount subject to self-employment tax is 92.35% of your net earnings from self-employment.
As a Single Member LLC owner, you’ll need to file quarterly estimated tax payments if you expect to owe $1,000 or more in taxes for the year. You’ll also need to file an annual tax return using Form 1040 and Schedule C.
Some states require Single Member LLCs to file annual reports. In Arizona, LLCs must file an Annual Report with the Arizona Corporation Commission and pay a $45 fee.
Single Member LLCs offer several benefits, including personal asset protection (a key advantage over sole proprietorships) and tax flexibility. However, they also come with additional responsibilities and costs. It’s important to weigh these factors carefully when deciding on your business structure.
As we move forward, let’s explore the alternative structure: sole proprietorships. Understanding both options will help you make an informed decision for your business venture.
A sole proprietorship represents the simplest form of business structure. It’s an unincorporated business owned and operated by one individual with no distinction between the business and the owner. As a sole proprietor, you claim all profits and bear responsibility for all your business’s debts, losses, and liabilities.
Starting a sole proprietorship requires minimal effort. In most cases, you don’t need to register with the state or file any formal paperwork. You can begin operations under your own name immediately. However, if you prefer to use a business name different from your legal name, you must file a “Doing Business As” (DBA) registration with your local government.
For instance, in Tucson, Arizona, you can file a DBA with the Pima County Recorder’s Office for a fee of $10 (a process much simpler and less expensive than forming an LLC).
Sole proprietors report their business income and expenses on Schedule C of their personal tax return (Form 1040). This simplifies the tax filing process as you don’t need to file a separate business tax return.
However, sole proprietors must pay self-employment tax on their net earnings. The self-employment tax rate is 15.3%. That rate is the sum of 12.4% for Social Security and 2.9% for Medicare.
Sole proprietors typically make quarterly estimated tax payments if they expect to owe $1,000 or more in taxes when they file their return. These payments are due on April 15, June 15, September 15, and January 15 of the following year.
Accurate record-keeping of all business income and expenses is essential. While sole proprietorships don’t have the same stringent recordkeeping requirements as corporations, good records are vital for tax purposes and to track your business’s financial health.
Sole proprietorships offer complete control over your business and simplicity in setup and operation. However, they also come with unlimited personal liability for business debts and obligations. This means your personal assets could face risk if your business encounters legal issues or can’t pay its debts.
Additionally, sole proprietorships may struggle to raise capital or secure business loans compared to more formal business structures like LLCs or corporations. Banks and investors often view sole proprietorships as riskier investments.
Now that we’ve explored sole proprietorships, let’s compare them to Single Member LLCs to help you make an informed decision for your business structure.
The most significant difference between Single Member LLCs and Sole Proprietorships lies in liability protection. Single Member LLCs provide a legal barrier between personal and business assets. If a business faces a lawsuit or debt, personal assets are generally protected. Sole proprietorships offer no such protection. As a sole proprietor, you’re personally responsible for all business debts and liabilities.
For example, if your business faces a $100,000 lawsuit and you’re a sole proprietor with $50,000 in business assets and $50,000 in personal savings, all of these assets could be at risk. With an LLC, typically only the $50,000 in business assets would be vulnerable.
Both structures offer considerable flexibility in management and decision-making. As the sole owner, you have complete control over your business operations. However, Single Member LLCs must adhere to certain formalities, such as maintaining separate business records and bank accounts. This can actually benefit you, as it helps create a clear distinction between personal and business finances.
Sole proprietors have fewer formal requirements but may find it challenging to separate personal and business finances effectively. This lack of separation can lead to complications during tax season and potential issues if the business faces financial difficulties.
Single Member LLCs often project a more professional image to clients, vendors, and potential partners. The LLC designation can lend credibility to your business, potentially opening doors to larger contracts or partnerships. Many clients and vendors prefer to work with LLCs due to their perceived stability and professionalism.
Sole proprietorships, while common and respected, may appear less established or professional, particularly in certain industries or when dealing with larger companies.
Forming and maintaining a Single Member LLC involves more costs than a sole proprietorship. In Arizona, for instance, the initial filing fee for an LLC is $50, with an additional $45 annual report fee. Sole proprietorships have minimal to no formation costs (unless you choose to file a DBA name).
However, you should weigh the additional costs of an LLC against the benefits of liability protection and potential tax advantages. Many business owners find that the peace of mind and credibility offered by an LLC outweigh the additional expenses.
When it comes to raising capital or securing financing, Single Member LLCs often have an advantage. Banks and investors typically view LLCs as more stable and credible entities. This can translate into easier access to business loans, lines of credit, and investment opportunities.
Sole proprietorships may face more challenges in this area. A Federal Reserve survey found that traditional business loans have a 67% approval rate, while personal loans have a 55% approval rate.
The choice between a Single Member LLC vs Sole Proprietorship will shape your business’s future. Single Member LLCs offer asset protection, tax flexibility, and enhanced credibility, but come with higher costs and administrative complexities. Sole Proprietorships provide simplicity and lower costs, yet lack personal asset protection and may struggle with financing.
Your decision should account for risk tolerance, growth plans, industry standards, and financial situation. Many businesses start as Sole Proprietorships and transition to LLCs as they grow, adapting to changing needs and circumstances. This decision isn’t permanent, but it’s important to make an informed choice based on your current situation and future goals.
At Clear View Business Solutions, we help entrepreneurs navigate these important decisions. Our team offers financial advisory, tax services, and accounting support tailored to your unique business needs. We can guide you through the pros and cons of each structure, helping you make the best choice for your business’s success.
At Clear View Business Solutions, we know you want your business to prosper without having to worry about whether you are paying more in taxes than you should or whether your business is set up correctly. The problem is it's hard to find a trusted advisor who can translate financial jargon to layman's terms and who can actually help you plan for better results.
We believe it doesn't have to be this way! No business owner should settle for working with a CPA firm that falls short of understanding what you want to achieve and how to help you get there.
Northwest Location:
7530 N. La Cholla Blvd., Tucson, AZ 85741
Central Location:
2929 N Campbell Avenue, Tucson, AZ 85719
© 2025 Clear View Business Solutions. All Rights Reserved.
At Clear View Business Solutions, we know you want your business to prosper without having to worry about whether you are paying more in taxes than you should or whether your business is set up correctly. The problem is it's hard to find a trusted advisor who can translate financial jargon to layman's terms and who can actually help you plan for better results.
We believe it doesn't have to be this way! No business owner should settle for working with a CPA firm that falls short of understanding what you want to achieve and how to help you get there. With over 20 years of experience serving hundreds of business owners like you, our team of experts combines financial expertise and proactive communication with our drive to help each client achieve results and have fun along the way.
Here's how we do it:
Discover: We start with a consultation to understand your specific goals, what's holding you back, and what success looks like for you.
Strategize & Optimize: Together, we design a customized strategy that empowers you to progress toward your goals, and we optimize our communication as partners.
Thrive: You enjoy a clear view of your business and your financial prosperity.
Schedule a consultation today, and take the first step toward being able to focus on your core business again without wondering if your numbers are right- or what they mean to your business.
In the meantime, download, "The Business Owner's Essential Guide to Tax Deductions" and make sure you aren't leaving money on the table.