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Fringe benefits by entity type: what you can deduct

By Joa García
Fringe BenefitsEntity TypesTax Concepts

One of the questions business owners run into as they grow is whether they can run their health insurance, retirement contributions, or other personal benefits through the business. The answer depends almost entirely on how your business is structured — and it's one of the areas where entity type makes the biggest practical difference in your take-home picture.

The IRS treats business owners differently depending on how their entity is set up. Getting this right means your benefits are deductible. Getting it wrong — running benefits through the wrong entity type, or not following the required procedures — means you may owe taxes on amounts you thought were excluded.

Here's how the major benefits work by entity type.

Health insurance

Health insurance is the benefit most owners ask about first, and it's also where the rules vary most by structure.

Sole proprietor / single-member LLC (disregarded entity)

You can deduct health insurance premiums — your own and your immediate family's — but not as a business expense on Schedule C. The deduction goes on Schedule 1 of your personal return as a self-employed health insurance deduction. That means it reduces your adjusted gross income, but it doesn't reduce the net profit that self-employment tax is calculated on. It's a real deduction, but it's not as good as the treatment a corporation gets.

Partnership / multi-member LLC taxed as a partnership

Partners can't be employees of their own partnership, so the standard employee fringe benefit rules don't apply. A partnership can pay health insurance premiums on behalf of a partner, but those premiums have to be included in the partner's income — reported as a guaranteed payment or included in their distributive share. The partner then deducts them on their personal return the same way a sole proprietor does: on Schedule 1, not self-employment-tax-reducing.

S corporation (2% shareholders)

S corp owners who hold more than 2% of the stock are treated like partners, not regular employees, for fringe benefit purposes. The S corp can pay health insurance premiums, but those premiums must be included in the shareholder-employee's W-2 wages. The good news: the shareholder then claims the self-employed health insurance deduction on their personal return — same as a sole proprietor. The process is more involved than for a regular employee, but the deduction is available.

One thing to be careful of: the health insurance plan needs to be established under the S corp (either directly or through the shareholder), and the premiums need to be properly reported on the W-2, or the deduction can be lost. The mechanics matter here.

C corporation

This is where the treatment is best. A C corp can pay health insurance premiums for owner-employees as a business expense, and those premiums are excluded from the employee's income entirely — not just deductible, but excluded. No self-employment tax, no income tax on the benefit. This is one of the clearest arguments for a C corp structure when the owner wants to maximize benefit access.

Retirement plans

Retirement plan contributions are available across all entity types, but the mechanics differ, and the limits and deductibility can vary.

Sole proprietor / single-member LLC

Self-employed individuals can contribute to a SEP-IRA, Solo 401(k), or SIMPLE IRA. Contributions are deductible on Schedule 1. The contribution limits for a Solo 401(k) are particularly generous — up to $70,000 in 2025 between employee deferrals and employer contributions (subject to net earned income limits). SEP-IRA contributions are employer-side only, limited to 25% of compensation up to the annual cap.

Partnership / multi-member LLC taxed as a partnership

Partners can contribute to SEP-IRAs and SIMPLE IRAs funded by the partnership. The partnership deducts the contributions, and partners receive the benefit through reduced self-employment income or the plan directly. Solo 401(k)s are not available to partners because they require no other employees (with limited exceptions).

S corporation

An S corp owner-employee can participate in any retirement plan the corporation sponsors. Because the owner is paid as a W-2 employee, compensation-based limits are calculated on W-2 wages — which means artificially low salaries reduce how much can go into the plan. This is one of the areas where the "reasonable salary" requirement really bites: if you're keeping your W-2 wages low to save on payroll taxes, you're also capping your retirement contributions.

C corporation

Same availability as an S corp — the owner participates as a W-2 employee. The key difference is that the C corp has more flexibility with defined benefit plans and can sometimes fund larger contributions than pass-through entities, depending on the plan design.

Group term life insurance

Up to $50,000 of employer-paid group term life insurance can be excluded from an employee's income under the standard rules. For C corp owner-employees, this works cleanly — the premium is a deductible business expense and excluded from the employee's income up to the $50,000 limit.

For S corp 2% shareholders, the exclusion doesn't apply. Premiums paid by the S corp for more-than-2% shareholders have to be included in their W-2 wages — no exclusion, no income-tax advantage.

Sole proprietors and partners can't access this benefit in the same way — they're not employees, so the employer-provided life insurance exclusion doesn't apply to them.

Health savings accounts (HSAs)

HSA eligibility is tied to being covered by a high-deductible health plan (HDHP), not to your entity type. So across all structures, if you're covered by an HDHP, you can contribute to an HSA and deduct those contributions. Employer contributions to an HSA are generally excluded from the employee's income.

For S corp 2% shareholders, this gets more complicated. The IRS has indicated that 2% shareholder-employees can't exclude employer HSA contributions from their income the same way non-owner employees can. The contributions typically need to be included in W-2 wages and deducted on the personal return — the same pattern as health insurance premiums.

For C corp owner-employees, the better treatment applies: employer contributions to an HSA are deductible by the corp and excluded from the employee's income.

Education assistance and other benefits

Employer-provided education assistance (up to $5,250 per year) can be excluded from an employee's income under a qualified plan. This is available for C corp employees, including owner-employees. For S corp 2% shareholders, the exclusion doesn't apply — same pattern as other fringe benefits.

Other benefits — dependent care assistance, adoption assistance, transportation benefits — follow similar patterns: full exclusion for C corp employees, inclusion in income for S corp 2% shareholders, and generally not accessible in the same form for sole proprietors and partners.

The pattern worth understanding

The thread running through all of this is that C corporations offer the broadest fringe benefit access for owner-employees. S corps offer some benefits but treat 2% shareholders like partners rather than employees, which limits certain exclusions. Sole proprietors and partners can still access many of the same benefits economically, but often through different mechanisms and without the same tax-favored treatment.

This doesn't mean a C corp is the right structure for everyone — double taxation on distributed profits is a real cost that can outweigh the fringe benefit advantage for many businesses. But if you're weighing entity type and benefit access is part of the conversation, these are the actual differences.

Want to see this in one place?

The Fringe Benefits by Entity Type comparison chart in the Prism resource library lays out the key benefits and how each entity type handles them — a quick reference you can keep on hand when benefits planning comes up.

Not sure how your structure is affecting your benefit access?

This is the kind of thing we look at in a Vibe Check — your current setup versus what might work better for where you are now. It's free and direct. Schedule yours here.

Keep reading

Benefits planning and entity structure are connected. These posts fill in the surrounding context:

This post is for general informational purposes and doesn't constitute tax or legal advice. Fringe benefit rules are complex and your situation may involve additional factors — talk to a tax professional before making decisions about owner benefits or entity structure.