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Scenarios in which it may make sense to shift self-employment income from one spouse to another to optimize social security benefits and/or avoid social security tax

By John H. Robinson, Financial Planner (May 2025)

Shifting self-employment income between spouses can optimize Social Security benefits and reduce tax liabilities in a narrow set of specific scenarios, though the strategy requires careful analysis of earnings histories, tax implications, and benefit calculations. Below are examples key situations where income reallocation may be advantageous:

1. When One Spouse’s Earnings Exceed the Social Security Wage Base

If a higher-earning spouse’s self-employment income surpasses the annual Social Security taxable maximum $176,100 in 2025), shifting excess income to a lower-earning spouse without exceeding their own wage base can maximize cumulative benefits. For example:

  • A spouse earning $400,000/year could split $200,000 with their partner. Both would reach the maximum taxable earnings, resulting in two Primary Insurance Amounts (PIAs) instead of one PIA and a spousal benefit (50% of the higher earner’s PIA). This increases total household benefits by up to 33%[1][2].
  • Caveat: This only works if the shifted income pushes the lower earner’s lifetime earnings into their own top 35 years[1][3].

2. When the Lower-Earning Spouse’s Retirement Benefit Nears Spousal Benefit Threshold

If a lower-earning spouse’s own retirement benefit is close to (or exceeds) 50% of their partner’s PIA, shifting income can:

  • Replace low-replacement-rate AIME tranches (e.g., 15% or 32% brackets) with higher ones for the lower earner[1].
  • Provide flexibility for the lower earner to claim benefits earlier without reducing spousal benefits[1][2].

Example: A lower earner with a $1,350/month retirement benefit and a $1,514 spousal benefit could increase their own benefit above the spousal threshold with additional income, eliminating dependency on the higher earner’s claiming timeline[1].

3. Avoiding “Wasted” Earnings in Non-Top-35 Years

Income earned by a higher-earning spouse that doesn’t qualify as one of their top 35 inflation-adjusted earning years provides no Social Security benefit. Shifting this income to a spouse whose earnings would count toward their top 35 years can:

  • Boost the lower earner’s AIME and PIA.
  • Avoid self-employment tax increases if the shifted amount remains below the lower earner’s wage base[1][3].

4. Reducing Self-Employment Tax in Community Property States

Married couples in community property states can reclassify a partnership as a sole proprietorship to minimize taxes:

  • Before: A 50/50 partnership with $275,400 net income pays 15.3% SE tax on both spouses’ shares ($42,136 total in 2020).
  • After: A sole proprietorship pays 15.3% on the first $137,700 and 2.9% Medicare tax on the remainder, saving $13,925 annually[4][5].

This strategy also simplifies tax filing (no Form 1065 partnership return)[4].

5. Using S-Corporations to Limit FICA Taxes

Converting a partnership to an S-corp allows couples to:

  • Pay modest salaries (subject to FICA taxes) and take distributions tax-free.
  • Example: A $250,000 business income split as $60,000 salaries each saves $19,890 in FICA taxes vs. partnership status[4][5].

6. Enhancing Survivor Benefits

Maximizing the lower-earning spouse’s PIA ensures higher survivor benefits if the higher earner dies first. A survivor receives 100% of the deceased’s benefit (if higher than their own), making dual PIAs advantageous[2].

When Shifting Income Doesn’t Make Sense

  • Spousal benefit already exceeds lower earner’s potential retirement benefit: Shifting income merely matches the spousal benefit, wasting effort[1][2].
  • High FICA tax costs: Shifting income below the wage base may increase total FICA taxes more than future benefit gains[1][3].

Implementation Strategies

  • Review earnings histories: Use Social Security statements to identify gaps in the lower earner’s top 35 years[1].
  • Consider entity structure: S-corps or sole proprietorships in community property states optimize tax outcomes[4][5][3].
  • Model scenarios: Tools like SSA’s Retirement Estimator can compare outcomes[6].

By aligning income shifts with these principles, couples can enhance lifetime Social Security benefits while minimizing unnecessary tax burdens.

John H. Robinson is the owner/founder of Financial Planning Hawaii and Fee-Only Planning Hawaii. He is also a co-founder of fintech software maker Nest Egg Guru and the new personal finance website NestEggPF.com. 

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  1. https://www.kitces.com/blog/social-security-salary-split-fica-wage-base-self-employed-pay-lower-earning-spouse/        
  2. https://www.socialsecurityintelligence.com/husband-wife-businesses-the-allocation-of-self-employment-income-for-social-security-and-the-divorce-wildcard/   
  3. https://www.thetaxadviser.com/issues/2019/nov/employing-family-members.html   
  4. https://bradfordandcompany.com/wp-content/uploads/2020/11/HWpt2.pdf   
  5. https://www.smolin.com/running-a-business-with-your-spouse-watch-out-for-these-tax-issues/  
  6. https://investor.vanguard.com/investor-resources-education/social-security/strategies-for-married-couples

John “J.R.” Robinson is the owner/founder of Financial Planning Hawaii and Fee-Only Planning Hawaii and is a co-founder of personal finance software maker Nest Egg Guru.