Putting Your Spouse on Payroll: Tax Pros and Cons
What changes when a spouse becomes an employee of the business: payroll taxes, retirement savings, health benefit plans, and the co-owner alternative.
Reviewed by the Fairlight Accounting cross-border tax team — U.S. & Canadian Tax Desks
Hiring your spouse does not shift income to a lower bracket on a joint return, so the value lies elsewhere: a second retirement account, Social Security credits for the spouse, and — for sole proprietors — a medical reimbursement plan that can turn family health costs into a business deduction. The spouse must do real work for reasonable pay.
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How are a spouse's wages taxed?
| Business structure | Social Security and Medicare | Federal unemployment tax |
|---|---|---|
| Sole proprietorship owned by the other spouse | Yes | No |
| Partnership (spouse is not a partner) | Yes | Yes |
| S or C corporation | Yes | Yes |
Because Social Security and Medicare apply, paying a spouse adds payroll tax. That cost is offset by the benefits below.
What are the main benefits?
- Retirement savings. A working spouse can make employee deferrals and receive employer contributions — in a Solo 401(k), both spouses can participate — roughly doubling the household's tax-deferred savings.
- Medical reimbursement plan. A sole proprietor can set up a Section 105 plan for employees. If the spouse is the only employee and the plan covers the employee's family, it can reimburse the whole family's medical costs, including the owner's, as a deductible business expense and not subject to self-employment tax.
- Social Security credits in the spouse's own name.
- Other fringe benefits are limited: educational assistance and dependent care programs cap the share of benefits that can go to more-than-5-percent owners and their spouses (at 5 percent and 25 percent), so a spouse-only workforce generally cannot use them tax-free.
What makes the employment real?
A job description, reasonable pay for the hours and work, timesheets, payment into the spouse's own account, and the full payroll process — W-4, withholding, deposits, W-2. A spouse who is paid but does no work, or whose pay is out of line with the work, is a common target.
What if both spouses own the business?
A married couple who are the only owners of an unincorporated business, file a joint return, and both materially participate may elect to be a qualified joint venture, each reporting their share on a separate Schedule C and building their own Social Security record — without filing a partnership return. A business held in a state-law entity such as an LLC cannot be a qualified joint venture and generally files as a partnership; in community property states, a couple owning an LLC as community property may instead treat it as a disregarded entity (Revenue Procedure 2002-69).
What changes in an S corporation?
Through family attribution, a spouse of a more-than-2-percent shareholder is treated as a 2 percent shareholder for fringe benefit purposes. Health premiums and many benefits paid for that spouse are taxed like the owner's, so the Section 105 strategy does not work there.
Frequently asked questions
Is hiring a spouse worth it if we file jointly?
Only for the benefits — retirement, health plans, Social Security — not for income shifting, since a joint return combines your incomes.
Can my spouse be paid as a contractor?
Rarely. A spouse doing ongoing work under your direction is generally an employee.
Does the Section 105 plan need a written document?
In practice, yes. The tax regulations do not strictly require a written plan, but a written plan document, substantiated claims, and reimbursement from the business account are what make the arrangement hold up in an audit.
Can I hire my spouse part-time?
Yes. Pay must match the hours and work, and retirement plan eligibility rules may require minimum service.
Official sources
The IRS explains: “If your spouse is your employee, not your partner, you must pay Social Security and Medicare taxes for them. The wages for the services of an individual who works for their spouse in a trade or business are subject to income tax withholding and Social Security and Medicare taxes, but not to FUTA tax.” — Internal Revenue Service, Married couples in business, https://www.irs.gov/businesses/small-businesses-self-employed/married-couples-in-business
The IRS explains: “A qualified joint venture is a joint venture that conducts a trade or business where (1) the only members of the joint venture are a married couple who file a joint return, (2) both spouses materially participate in the trade or business, and (3) both spouses elect not to be treated as a partnership.” — Internal Revenue Service, Election for married couples unincorporated businesses, https://www.irs.gov/businesses/small-businesses-self-employed/election-for-married-couples-unincorporated-businesses
Next step
Fairlight Accounting handles U.S. domestic, cross-border (U.S.–Canada), and international tax returns, plus bookkeeping, payroll, and CFO advisory. Our U.S. Tax Desk sets up spouse payroll, retirement plans, and medical reimbursement plans together. See pricing or book a free fit call.
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