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Understanding the Differences Between C Corporation, S Corporation, Partnership, and Disregarded Entity Taxation

Thursday, July 23rd, 2026

by: Jason M. Temple

Choosing the right tax classification for a business is one of the most important financial decisions an owner can make. While many people think that a business entity and its tax treatment are the same thing, they are actually separate concepts. For example, a limited liability company (LLC) may be taxed as a disregarded entity, partnership, S corporation, or C corporation depending on the number of owners and elections made with the IRS. Additionally, corporations can be taxed as a C corporation or an S corporation depending on eligibility requirements and affirmative elections with the IRS.

Each tax classification has unique rules regarding taxation, owner compensation, distributions, compliance requirements, and overall tax planning opportunities. Understanding these differences can help business owners make informed decisions as their businesses grow.
 
“C” Corporation Taxation:

A C corporation is a separate taxable entity from its owners. The corporation files its own federal income tax return (IRS Form 1120) and pays tax on its income at the corporate tax rate. When profits are distributed to shareholders as dividends, the shareholders pay tax on those dividends on their individual tax returns. This creates what is commonly referred to as “double taxation” because the same earnings are taxed once at the corporate level and again at the shareholder level. For various reasons, most large, publicly traded companies are taxed as C corporations, but other tax classifications can provide for increased flexibility and advantages for smaller companies.

Advantages

  • Ability to retain earnings within the corporation
  • No restrictions on the number or type of shareholders
  • Easier to attract outside investors and venture capital
  • Multiple classes of stock are permitted

Disadvantages

  • Potential for double taxation
  • Corporate tax return is required
  • More complex governance and compliance requirements

 
“S” Corporation Taxation:

Depending on eligibility requirements, a corporation, LLC, or partnership can elect to be treated as an S corporation by affirmatively filing the appropriate forms (IRS Form 2553). An S corporation is generally not subject to federal income tax. Instead, its income, deductions, and credits “pass through” to shareholders, who report them on their personal tax returns. One of the most significant tax advantages of an S corporation is that shareholders who actively work in the business may reduce self-employment taxes. Owners who provide services must receive reasonable compensation through payroll, while additional profits may generally be distributed without being subject to self-employment tax, which results in a lower overall tax burden for owners.

Advantages

  • Pass-through taxation avoids corporate income tax (double taxation)
  • Potential savings on self-employment taxes
  • Relatively simplified accounting procedures and tax filings

Disadvantages

  • Strict IRS eligibility requirements
  • Owners working in the business must receive reasonable compensation
  • Limited flexibility and potentially increased costs on a purchase and sale transaction
  • Generally not advisable to hold real estate or passive investment assets

 
Partnership Taxation:

A partnership is formed when two or more parties join together to operate a business for profit. The partners can take additional steps to formalize the partnership as a separately legal entity by filing appropriate documents in the relevant jurisdiction. By default, a partnership is a pass-through entity that files an informational tax return (IRS Form 1065) but generally does not pay federal income tax. Instead, profits and losses “pass through” to the partners. Partners typically receive a Schedule K-1 reporting their share of the partnership’s income, deductions, and credits. Unlike S corporations, active partners generally pay self-employment tax on their share of business income unless an exception applies.

Advantages

  • Pass-through taxation avoids corporate income tax (double taxation)
  • Flexible allocation of profits and losses between partners
  • Ability to admit various types of partners, including individuals, corporations, trusts, and other entities

Disadvantages

  • Active partners often owe self-employment tax on business income
  • More complex accounting and tax reporting
  • Partnership agreements are generally more complicated to account for profit and loss allocations

 
Disregarded Entity Taxation:

A disregarded entity is a business that is not separately recognized (or “ignored”) for federal income tax purposes because it has only one owner and has not elected to be taxed as a corporation. The most common example is a single-member LLC. Rather than filing a separate business income tax return, the owner reports the business income directly on their individual tax return. Although the entity is disregarded for federal income tax purposes, it remains a separate legal entity under state law, preserving liability protection when legal formalities are properly maintained.

Advantages

  • Pass-through taxation avoids corporate income tax (double taxation)
  • No separate federal income tax return for the business in most cases
  • Easy and inexpensive to administer

Disadvantages

  • Entire net business income is generally subject to self-employment tax
  • Fewer tax planning opportunities than an S corporation for reducing employment taxes
  • Business profits are taxed regardless of whether the member receives a distribution of profits

 
Choosing the Right Tax Classification:

There is no one-size-fits-all answer. The best choice depends on several factors, including:

  • Expected annual profit
  • Number and character of owners
  • Whether owners actively work in the business
  • Plans to seek outside investors
  • Long-term growth strategy
  • Desired administrative simplicity

 
Conclusion:

Your business’s legal structure and tax classification can have a significant impact on taxes, cash flow, administrative responsibilities, and long-term growth opportunities. While LLCs offer flexibility by allowing several tax classifications, corporations have more limited tax planning options based on their structure and IRS elections but may be more attractive to future investors or acquirers. Because every business has unique financial goals and circumstances, business owners should evaluate not only their current tax situation but also where they expect the business to be in the coming years.


To learn more, connect with Jason M. Temple for further guidance on entity choice and formation, corporate governance, investment, taxation, and related issues. A shareholder in the Corporate and Transactions practice group at Brown & Fortunato, P.C., Jason represents both new and existing companies across a wide variety of industries to maximize organizational, operational, legal, and taxation goals and initiatives, as well as assisting with other business and transactional matters. Reach out at (806) 345-6330 or jtemple@bf-law.com to discuss how he can help support your legal needs.


This article is for informational purposes only and does not constitute legal advice or establish an attorney-client relationship. This article was prepared on a specific date, and the law may have changed since it was written. You should contact your attorney to obtain advice with respect to your specific legal issue and needs.