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Running a Business with Your Spouse? Here’s How to Avoid Costly Tax Mistakes

Married and in Business? Understand the Tax Implications

If you and your spouse jointly run a profitable unincorporated small business, you may face complex tax challenges that could increase your liability and compliance burden.


 Partnership Classification: What It Means

By default, the IRS treats a jointly operated unincorporated business as a partnership, requiring:

  • Filing Form 1065 annually
  • Issuing Schedules K-1 to each spouse
  • Tracking income, deductions, and credits separately

This setup can lead to additional paperwork and tax complexity.


 Self-Employment Tax: A Hidden Cost

Self-employment (SE) tax covers Social Security and Medicare contributions. For 2025:

  • 12.4% Social Security tax applies to the first $176,100 of net SE income
  • 2.9% Medicare tax applies to all SE income
  • An additional 0.9% Medicare tax kicks in if joint SE income exceeds $250,000

If both spouses earn $150,000 each from the business, the SE tax totals $45,900 — on top of regular income tax.


 3 Tax-Saving Strategies for Spouse-Run Businesses

1. Use IRS Revenue Procedure 2002-69 in Community Property States

If you live in a community property state, you can treat the business as a sole proprietorship operated by one spouse. This allows:

  • All SE income to be taxed under one Schedule SE
  • Avoiding double Social Security tax exposure

2. Convert to an S Corporation

Outside community property states, consider forming an S corporation:

  • Pay modest salaries to each spouse (subject to FICA tax)
  • Distribute remaining profits as FICA-free dividends
  • Reduce overall SE tax liability

Note: S corps require additional compliance, including payroll and corporate filings.

3. Hire Your Spouse as an Employee

Disband the partnership and:

  • Treat one spouse as the sole proprietor
  • Hire the other spouse as an employee with a modest salary
  • File only one Schedule SE

This approach limits SE tax exposure and may allow for employee benefits like retirement contributions.


 Final Thoughts

Running a business with your spouse can be rewarding — but also tax-intensive. Whether you’re in a community property state or not, there are legal ways to reduce your tax burden and simplify compliance.


 Need Help Navigating Spousal Business Taxation?

As a CPA, CFF, and CGMA, I can help you evaluate the best structure for your business and implement strategies that minimize tax liability. Let’s talk about how to optimize your setup.