What Physicians Need to Know About Form 5500-EZ

Setting up a solo 401(k) is one of the smartest retirement moves an independent physician can make. But once your plan’s total assets cross a certain threshold, the IRS expects annual paperwork in return. Form 5500-EZ is the reporting form that one-participant retirement plans use to stay compliant, and missing it carries penalties that can reach six figures. Understanding what triggers the filing requirement, when it’s due, and what happens if you miss it is a routine part of managing self-employed retirement plans responsibly.

What Form 5500-EZ Actually Is

Form 5500-EZ is an IRS annual return for one-participant retirement plans, which includes most solo 401(k) plans held by self-employed physicians and practice owners. It tells the IRS the current value of your plan assets and confirms the plan is still operating within legal parameters.

Who Files It

If you’re a self-employed physician or a practice owner with no common-law employees participating in your retirement plan, you’re operating a one-participant plan. That typically means a solo 401(k), a profit-sharing plan, or a money purchase pension plan held entirely in your name (and your spouse’s, if applicable). Unlike a standard Form 5500, which larger employer-sponsored plans submit through the DOL’s EFAST2 electronic system, Form 5500-EZ is filed directly with the IRS. That distinction matters when you’re looking for the right instructions or filing portal.

How It Differs From Form 5500-SF

Form 5500-SF is a short-form version of the standard 5500, filed electronically through EFAST2 for small plans with fewer than 100 participants. Some eligible one-participant plans can choose to file 5500-SF instead of 5500-EZ, but for most solo physician retirement plans, 5500-EZ filed directly with the IRS is the correct route. If you’re uncertain which applies to your plan structure, that’s worth a conversation with a financial planner who works specifically with physicians.

When You’re Required to File

Not every solo 401(k) triggers a Form 5500-EZ filing requirement. There’s a specific asset threshold that activates the obligation, and it’s important to understand exactly how it’s calculated.

The $250,000 Asset Threshold

You’re required to file Form 5500-EZ for any plan year in which your plan’s total assets exceed $250,000 at the end of the year. If your plan’s balance stays below that number, no filing is required, with one important exception covered below. For physicians with high-earning years and aggressive contribution strategies, crossing this threshold can happen faster than expected.

The Aggregation Rule for Multiple Plans

If you hold more than one one-participant retirement plan, the $250,000 threshold applies to your combined total assets across all plans, not to each plan individually. A physician who maintains separate solo 401(k) accounts under different practice entities could hit the threshold sooner than they’d anticipate when looking at either plan in isolation. This is one of the more commonly misunderstood aspects of solo 401(k) reporting requirements, and it’s worth reviewing your full retirement picture annually with someone who understands physician retirement plan structuring.

The Final Year Filing Rule

One filing requirement that catches physicians off guard involves plan termination. If you close or roll over your solo 401(k), you’re required to file a final Form 5500-EZ for that plan year regardless of the total asset value. Even if your balance was below $250,000 at termination, the final-year filing is mandatory. Physicians who wind down a practice, consolidate accounts, or move assets into a new plan structure need to account for this before assuming they have no filing obligation.

Filing requirements for self-employed retirement plans are easy to miss when you’re focused on running a practice. PRS works with independent physicians to keep retirement plan compliance integrated into a broader financial strategy so nothing falls through the cracks.

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Deadlines and How to File

Form 5500-EZ follows a predictable annual schedule. For calendar-year plans (plans that run January through December, which is most solo 401(k) plans), the filing deadline is July 31 of the following year. A plan year ending December 31, 2025, for example, would require a Form 5500-EZ filed by July 31, 2026.

Requesting an Extension

If you need more time, you can request an automatic 2.5-month extension by filing Form 5558 before the original deadline. That pushes your due date to October 15. The extension is for filing only, not for any plan-related contributions or corrections. If you’re relying on your CPA to handle this, confirm it’s on their radar before July approaches.

Where to File

Form 5500-EZ is mailed directly to the IRS, not submitted through EFAST2. The current mailing address is included in the IRS instructions for the form, which are updated annually. If you choose to file electronically, eligible one-participant plans can use EFAST2 voluntarily, but paper filing directly to the IRS remains the standard method for most.

The Penalty for Missing the Deadline

This is where noncompliance with Form 5500-EZ becomes genuinely costly. The IRS assesses a penalty of $250 per day for each day a required return is late, with a maximum penalty of $150,000 per return. For a physician who didn’t realize their plan crossed the threshold and hasn’t filed in several years, the exposure adds up quickly.

The Delinquent Filer Voluntary Compliance Program

If you’ve missed prior filings, there’s a correction path available. The IRS’s Delinquent Filer Voluntary Compliance Program (DFVCP) allows late filers to come into compliance voluntarily, typically at a significantly reduced penalty rate compared to what the IRS would assess if they identified the noncompliance first. Physicians who’ve recently discovered a missed filing obligation should address it through DFVCP rather than waiting for an IRS notice. A financial planner or tax professional familiar with self-employed retirement plans can walk you through what that process looks like for your specific situation.

Keep Form 5500-EZ in the Bigger Picture

Form 5500-EZ is a compliance requirement, but it’s also a useful annual checkpoint. Filing it means you’re reviewing your plan’s total asset value, confirming the plan is still structured correctly, and verifying that your contributions and documentation are in order. For physicians building long-term wealth through a solo 401(k), that annual review is one piece of a larger financial planning discipline that includes contribution optimization, tax strategy, and retirement income planning.

The physicians who tend to encounter compliance surprises are those managing their retirement plan in isolation, without a clear picture of how it fits their full financial situation. PRS works with independent physicians and practice owners across 49 states to build that integrated picture, connecting retirement planning, tax services, and financial planning under one roof. If you’re approaching that $250,000 threshold or have questions about your filing obligations, reach out and let’s talk through where you stand.

Advisory services offered through PRS Investment Advisors, a Member of Advisory Services Network, LLC. Tax services and insurance products offered through Physician’s Resource Services. Advisory Services Network, LLC and Physician’s Resource Services are not affiliated. All information contained herein is derived from sources deemed to be reliable but cannot be guaranteed. All views/opinions expressed in this article are solely those of the author and do not reflect the views/opinions held by Advisory Services Network, LLC.

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What Physicians Need to Know About Form 5500-EZ

What Form 5500-EZ Actually Is

Who Files It

How It Differs From Form 5500-SF

When You’re Required to File

The $250,000 Asset Threshold

The Aggregation Rule for Multiple Plans

The Final Year Filing Rule

Deadlines and How to File

Requesting an Extension

Where to File

The Penalty for Missing the Deadline

The Delinquent Filer Voluntary Compliance Program

Keep Form 5500-EZ in the Bigger Picture

Share This Post

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