The SEP-IRA Trap Every Self-Employed Physician Should Know About
- Feb 20
- 4 min read
One of the most common tools for self-employed physicians, whether you are a locums contractor or a private practice owner, is the SEP-IRA. It is simple, flexible, and allows for massive tax-deductible contributions.
But for many physicians, the SEP-IRA is a double-edged sword. While it solves one problem (tax deduction), it can create another significant issue for your long-term tax planning.
Here is what you need to know about the SEP-IRA, how it works, and why your tax team might recommend a Solo 401(k) instead.
What Is a SEP-IRA?
A Simplified Employee Pension (SEP) IRA is a retirement plan designed for business owners and self-employed individuals. It is "simplified" because it requires very little paperwork to set up and maintain compared to a 401(k) or defined benefit plan.
For physicians, the SEP-IRA is often the "default" option suggested by general accountants because it is easy to open and has flexible funding deadlines.
How it works:
Employer-Funded: Unlike a standard 401(k), employees (if you have them) cannot contribute to a SEP-IRA. Only the employer makes contributions.
Immediate Vesting: Any money you contribute to yourself (or your employees) belongs to the account holder immediately.
Tax-Deferred: Contributions are tax-deductible for the business, and the money grows tax-deferred until retirement withdrawals begin.
Contribution Limits (2025 & 2026)
The SEP-IRA allows for substantial tax-deferred savings, far exceeding the limits of a traditional IRA.
2025 Tax Year: Contribute up to $70,000 or 25% of your compensation.
2026 Tax Year: The limit increases to $72,000.
The Calculation for Self-Employed Physicians
If you are a sole proprietor or single-member LLC, the math is slightly different. Because you are both the employer and the employee, the IRS limits your contribution to effectively 20% of your net self-employment income (net profit minus the deduction for self-employment tax).
If you are an S-Corp owner, the 25% limit applies strictly to the W-2 wages you pay yourself, not your profit distributions.
The Hidden Pitfall: The Pro-Rata Rule
Most high-income physicians utilize the Backdoor Roth IRA method. This involves making a non-deductible contribution to a Traditional IRA and immediately converting it to a Roth.
A SEP-IRA can destroy this tax planning.
The IRS "Pro-Rata Rule" looks at all your pre-tax IRA assets (including SEP-IRAs, SIMPLE IRAs, and Traditional IRAs) as one big pot. If you have a SEP-IRA with a balance, you cannot just convert your new $7,000 contribution to a Roth tax-free. Instead, the IRS forces you to treat the conversion as a mix of pre-tax and after-tax money.
Example:
You have $93,000 in a SEP-IRA.
You contribute $7,000 to a Traditional IRA for a Backdoor Roth.
Total IRA Balance: $100,000.
Result: When you convert that $7,000, the IRS views 93% of it as taxable. You end up with a tax bill you did not expect, defeating the purpose of the Backdoor Roth.
If you plan to use the Backdoor Roth (and most physicians should), holding a SEP-IRA is often a mistake.
SEP-IRA vs. Solo 401(k)
For many self-employed physicians without full-time employees, the Solo 401(k) is the superior choice.
Feature | SEP-IRA | Solo 401(k) |
Backdoor Roth Friendly? | No (triggers Pro-Rata rule) | Yes (does not count toward Pro-Rata) |
Catch-Up Contributions | None | Yes (for age 50+) |
Roth Option | Rare (Roth SEP is new/complex) | Yes (Roth 401k allowed) |
Contribution Efficiency | Requires higher income to max out | Can max out on lower income |
Paperwork | Very Low | Moderate (requires plan document) |
When Does a SEP-IRA Make Sense?
Despite the downsides for Backdoor Roth planning, the SEP-IRA is still a valuable tool in specific scenarios:
You Missed the Deadline: A Solo 401(k) generally must be established by December 31 of the tax year. A SEP-IRA can be set up and funded as late as your tax filing deadline (plus extensions). If it is April 10th and you need a deduction for the prior year, the SEP-IRA is your best friend.
You Have Employees: A Solo 401(k) is strictly for owner-only businesses (and spouses). If you have a nurse or receptionist, you generally cannot use a Solo 401(k). A SEP-IRA allows you to cover employees, though you must contribute the same percentage of pay to their accounts as you do to your own.
Simplicity is King: If you do not care about the Backdoor Roth and simply want the easiest possible way to lower your taxable income, the SEP-IRA wins on simplicity.
Proactive Tax Planning Matters
Retirement plans aren't "one size fits all," especially for high-income physicians juggling complex tax situations. The SEP-IRA has its place: it's fast, flexible, and can deliver meaningful tax savings when you need them. But if you're using the Backdoor Roth or planning to in the future, the pro-rata rule can turn a simple decision into an expensive mistake. The right retirement plan isn't just about maximizing contributions, it's about preserving your long-term tax flexibility.
Disclaimer: This material is intended for educational and informational purposes only and does not constitute tax, legal, accounting, or financial advice. The content is general in nature and may not apply to your specific circumstances. Tax laws and financial regulations are subject to change and interpretation, and the application of these laws can vary based on individual situations. Before making any decisions, you should consult with a qualified tax advisor, legal counsel, or financial professional.
Contact Doc Wealth Today
Trusted by thousands of physicians nationwide for year-round tax planning, entity optimization, and strategies that make sense.
Comments