Back to Solo 5500 Desk

Do I need to file Form 5500-EZ for my Solo 401(k)?

Free Solo 401(k) Form 5500-EZ eligibility checker for the $250,000 threshold, final returns, and product fit.

TL;DR

A one-participant Solo 401(k) usually files Form 5500-EZ when combined one-participant plan assets are over $250,000 at year end, or when the plan has a final year because all assets were distributed or transferred. This checker separates likely file, likely no annual filing, final return, and out-of-scope cases before you open the packet wizard.

Use this free checker before spending time on a Form 5500-EZ packet. It is written for owner-only or partner-only Solo 401(k) plans with records ready, not for late filings, amended returns, IRS notices, employee coverage questions, controlled groups, or hard-to-value assets.

The checker is not a filing, advice, or representation service. It gives a self-preparation routing answer based on the facts you enter, then points you to the official IRS/DOL path or a qualified professional when the case leaves the narrow Solo 5500 Desk lane.

1.Is this a one-participant plan covering only owner/spouse?

2.Do you have simple beginning and ending asset statements with no plan liabilities?

3.If you maintain more than one one-participant plan, have you checked combined assets?

4.Is this not a SEP or SIMPLE IRA-based arrangement?

5.Is this an original on-time return with no IRS correspondence?

6.Do you know whether the sponsor files 10 or more IRS returns this year?

Answer the Solo 401(k) fit questions.

The full filing trigger depends on assets and final-year facts, but these fit questions decide whether this free checker and packet wizard should be used at all.

Four possible checker outputs

Likely file

Combined one-participant plan assets are more than $250,000 at year end, or another filing trigger is present. The packet wizard can help only if the case is simple, original, on time, owner-only, and source records are ready.

Likely no annual filing

The plan is ongoing, combined one-participant plan assets are $250,000 or less at year end, and no final-year facts are present. Keep records anyway, because the threshold and final-year rule are checked again next year.

Final return

All plan assets were distributed or transferred during the final plan year. A final Form 5500-EZ can be required even when the plan is below the $250,000 annual threshold.

Out of scope

Use official instructions or a CPA, EA, attorney, or TPA when there are non-owner employees, late or amended returns, IRS correspondence, controlled group issues, complex assets, liabilities, plan correction, or individualized plan advice.

Related Solo 401(k) filing guides

Do I need to file Form 5500-EZ?Direct answer for the filing trigger, deadline, final-year rule, and filing method.Solo 401(k) $250,000 thresholdExact-match guide for combined one-participant plan assets and threshold examples.Final Solo 401(k) plan yearWhy final returns can be required even below the normal asset threshold.Electronic Form 5500-EZ filingSeparate filing-method check for the 10-return EFAST2 threshold.Owner-only eligibilityHard stop for common-law employee and coverage issues.

What the Solo 401(k) checker is looking for

The checker first protects the Form 5500-EZ lane: owner/spouse or partner/spouse coverage only, simple defined contribution Solo 401(k), original on-time return, no IRS correspondence, no SEP/SIMPLE IRA arrangement, and no plan-administration judgment.

It then keeps the filing trigger clear: combined year-end one-participant plan assets above $250,000, or a final plan year where all assets were distributed or transferred. The EFAST2 10-return rule is a separate filing-method question, not the annual filing trigger.

If every fit question is positive, the wizard can organize a self-review packet, source checklist, filing-method warning, and annual passport. You still review the output, sign where required, file through the official IRS/DOL channel, and keep the source documents with plan records.

Official sources and assumptions

This checker uses official instructions to expose fit questions, source records, and hard stops for a narrow self-preparation packet. If a fact falls outside the supported answers, use the linked official source before continuing.

Last reviewed: .