Should You Convert Your C Corporation to an S Corporation? What a CPA Thinks

Deciding whether to convert your C corporation to an S corporation is a significant business decision that can have lasting tax and operational implications. This comprehensive guide will walk you through the key differences between C corps and S corps, the benefits and drawbacks of converting, the eligibility requirements, and the step-by-step process to make the change. 

Drawing on IRS guidelines and expert insights, we’ll help you understand if converting from a C corporation to an S corporation aligns with your business goals.

Understanding the Difference Between C Corporations and S Corporations

A C corporation is the default business structure for corporations and is taxed separately from its owners. This means the corporation pays income tax on its profits, and shareholders also pay taxes on dividends received, leading to double taxation.

An S corporation, on the other hand, is a pass-through entity for tax purposes. This means the corporation itself generally does not pay federal income tax. Instead, income, losses, deductions, and credits flow through to shareholders, who report these on their personal tax returns. This avoids double taxation but comes with specific eligibility requirements and restrictions.

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Why Consider Converting Your C Corporation to an S Corporation?

Converting your C corporation to an S corporation can offer several potential benefits:

• Avoidance of double taxation: Profits are only taxed once at the shareholder level.
• Pass-through losses: Shareholders may be able to deduct business losses on their personal tax returns.
• Potential tax savings on distributions: Dividends from an S corp are generally not subject to self-employment tax.
• Simplified tax filings: S corps file Form 1120-S, which can be simpler than C corp filings.

However, there are important considerations such as restrictions on the number and type of shareholders, one class of stock, and the potential for built-in gains tax.

Eligibility Requirements for S Corporation Status

To convert your C corporation to an S corporation, your business must meet IRS requirements:

• Be a domestic corporation.
• Have only allowable shareholders, including individuals, certain trusts, and estates. Partnerships, corporations, and non-resident aliens are not allowed shareholders.
• Have no more than 100 shareholders. (Family members can be treated as one shareholder in some cases.)
• Have only one class of stock, though voting rights can differ.
• Not be an ineligible corporation such as certain financial institutions or insurance companies.

Steps to Convert a C Corporation to an S Corporation

Converting your C corporation to an S corporation is a process that requires careful attention to IRS rules and deadlines. The primary step involves filing IRS Form 2553, but several important tasks must be completed to ensure a smooth transition. Below is a detailed breakdown of each step you should follow:

1. Confirm Eligibility

Before initiating the conversion, it is essential to verify that your corporation meets all IRS eligibility requirements for S corporation status. This includes confirming that your business is a domestic corporation, has no more than 100 eligible shareholders, and issues only one class of stock. 

Additionally, shareholders must be individuals (with some exceptions), certain trusts, or estates, and cannot include partnerships, corporations, or non-resident aliens. Ensuring eligibility upfront prevents delays and complications during the election process.

2. Obtain Shareholder Consent

All shareholders must unanimously agree to convert the corporation to an S corporation. This requires holding a formal shareholder meeting or obtaining written consent from each shareholder. 

The consent should be documented carefully, with minutes or signed statements kept as part of your corporate records. This unanimous consent is a legal requirement and critical for the IRS to accept your election.

3. File Form 2553 with the IRS

The next step is to complete and file Form 2553, Election by a Small Business Corporation. This form must be signed by all shareholders and submitted to the IRS no later than two months and 15 days after the beginning of the tax year when you want the S corporation status to take effect. 

Filing on time is crucial because late filings may result in your corporation being taxed as a C corporation for the entire year. The form requires detailed information about the corporation, shareholders, and the desired effective date of the S election.

4. File Final C Corporation Tax Return

After the S election is accepted, you must file the final C corporation tax return using Form 1120 for the period before the S corporation status takes effect. This return reports income and expenses up to the date the S election begins. 

Filing this final C corp return ensures the IRS has a clear record of your corporation’s tax history and separates the C corp tax period from the S corp period.

5. File First S Corporation Tax Return

Once the S corporation election is effective, you will file your first S corporation tax return using Form 1120-S. This return reports the corporation’s income, deductions, and credits after the conversion date. 

The due date for this return is generally the 15th day of the third month following the end of the corporation’s tax year, with extensions available upon request. Timely filing helps maintain compliance and avoids penalties.

6. Request Late Election Relief if Necessary

If you miss the deadline to file Form 2553, you may still be able to obtain relief by requesting a late election. The IRS allows relief if you can demonstrate reasonable cause for the delay and that the corporation has acted as an S corporation since the intended effective date. 

This process involves submitting a letter explaining the circumstances along with the late Form 2553 filing. Consulting with a tax advisor can increase the chances of approval.

Tax Implications of Converting from C Corp to S Corp

While converting can provide tax advantages, there are important tax implications to consider:

• Built-in Gains (BIG) Tax: If the corporation has appreciated assets at conversion, selling those assets within five years may trigger a built-in gains tax.
• Passive Income Restrictions: Excess passive income inherited from the C corporation can lead to termination of S corp status.
• Loss Limitations: An S corporation cannot carry forward net operating losses from its time as a C corporation.
• Inventory Valuation Methods: S corps cannot use LIFO inventory accounting if the C corp used it, which may trigger tax adjustments.

Timing and Deadlines for Conversion

Timing is critical when converting from a C corporation to an S corporation. The IRS requires that Form 2553 be filed no later than two months and 15 days after the beginning of the tax year in which you want the election to take effect. Filing late may cause your corporation to remain a C corp for the entire year, leading to unexpected tax consequences.

If you miss the deadline, you may request late election relief by demonstrating reasonable cause and following IRS procedures.

Advantages and Disadvantages of Converting to an S Corporation

Converting to an S corporation avoids double taxation and allows losses to pass through to shareholders. It can also reduce self-employment taxes. However, S corps have limits on shareholders and stock classes, which may restrict growth. Conversion may trigger built-in gains tax and limit some C corp tax benefits. Consider these factors carefully before deciding.

Advantages	Disadvantages
Avoids double taxation on corporate income	Restrictions on number and type of shareholders
Pass-through taxation of income and losses	Only one class of stock allowed
Potential savings on self-employment taxes	Built-in gains tax on appreciated assets
Simplified tax filings	Loss of some tax benefits from C corp status
Flexible profit and loss allocation among owners	May face state-level tax implications

Final Thoughts on Converting Your C Corporation to an S Corporation

Converting from a C corporation to an S corporation can offer significant tax advantages, but it requires careful evaluation of your business’s specific circumstances and strict adherence to IRS rules and deadlines. Understanding the benefits, limitations, and tax consequences will help you make an informed decision.

If you are considering this election, working with a trusted tax advisor like P4 Tax & Consulting ensures you navigate the process smoothly and optimize your tax position.

How P4 Tax & Consulting Can Help You Convert Your C Corp to an S Corp

Converting from a C corporation to an S corporation involves complex tax rules and strict deadlines. At P4 Tax & Consulting, led by Chris Pantoja, CPA, we specialize in helping business owners evaluate whether conversion is right for them and guide them through the process.

To discuss your unique situation and whether converting your C corporation to an S corporation makes sense, please Book A Call with our team or Contact Us for more details.

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