Form 5500-SF is the short version of the annual return/report for small employee benefit plans. A plan can use it instead of the full Form 5500 if it generally had fewer than 100 participants at the start of the plan year, held no employer securities, was 100% invested in easy-to-value eligible plan assets, qualifies for the waiver of the independent accountant's audit and meets four other conditions. It's filed electronically through EFAST2, by the last day of the 7th month after the plan year ends.
Everything below comes from the US Department of Labor's 2025 Instructions for Form 5500-SF, as of October 2026.
The eight conditions for the short form
Your plan can file the 5500-SF only if it meets every one of these:
- It covered fewer than 100 participants at the beginning of the 2025 plan year, or it was eligible to and did file as a small plan for 2024 and didn't cover more than 120 participants at the start of 2025.
- It didn't hold any employer securities at any time during the plan year.
- It was 100% invested at all times in eligible plan assets, such as mutual fund shares, insurance company and bank investment contracts valued at least annually, publicly traded securities held by a registered broker-dealer, cash and cash equivalents, and participant loans.
- It's eligible for the waiver of the annual independent qualified public accountant (IQPA) audit, but not by reason of enhanced bonding.
- It isn't a multiemployer plan.
- It isn't required to file Form M-1 for multiple-employer welfare arrangements.
- It isn't a pooled employer plan.
- It isn't filing as, or as part of, a DCG reporting arrangement.
Employee stock ownership plans and direct filing entities can't use the 5500-SF at all.
The 80 to 120 participant overlap
Here's the rule that keeps growing plans on the short form longer than people expect. A plan that filed as a small plan last year can keep doing so this year as long as it didn't cover more than 120 participants at the beginning of the plan year. So crossing 100 doesn't automatically push you onto the full Form 5500 with an audit; crossing 120 does. Defined contribution plans count participants as shown on line 5c(1), or 5c(2) on a first return.
5500-SF, 5500 or 5500-EZ?
| Form | Typically used by |
|---|---|
| Form 5500-SF | Small plans meeting all eight conditions above, filed through EFAST2 |
| Form 5500 | Plans that must file but don't qualify for the short form, with all required schedules and attachments |
| Form 5500-EZ | One-participant plans (owners, partners and their spouses) and certain foreign plans, filed with the IRS |
Some small plans don't file anything. The instructions list exemptions, including many welfare benefit plans with fewer than 100 participants that are unfunded, fully insured or a mix of the two. Certain one-participant plans file the Form 5500-EZ with the IRS instead.
Deadline and extensions
| Situation | Due date |
|---|---|
| Normal filing | Last day of the 7th calendar month after the plan year ends |
| Short plan year | Last day of the 7th calendar month after the short plan year ends |
| Form 5558 extension | One-time extension of up to two and a half months, if Form 5558 is filed by the normal due date |
| Automatic extension with the employer's tax return | To the employer's extended tax return due date, if the plan year and tax year match, but never more than nine and a half months after the plan year ends |
If the due date falls on a Saturday, Sunday or federal holiday, you can file on the next business day. Keep a copy of the extension request with the plan's records.
Penalties, as of October 2026
- Up to $2,739 a day for each day a plan administrator fails or refuses to file a complete and accurate report, under ERISA.
- $250 a day, up to $150,000, under the Internal Revenue Code for not filing the annual return for certain plans by the due date.
- $1,000 for not filing a required actuarial statement (Schedule MB or SB).
If you've missed a year, the instructions point to the Delinquent Filer Voluntary Compliance (DFVC) Program, which lets delinquent plan administrators pay reduced civil penalties when they come forward voluntarily. You tick the DFVC box in Part I, line C.
How filing works
- Check the eight conditions against the plan's investments and participant count.
- Collect the year-end asset statements and participant numbers.
- Complete the 5500-SF in EFAST2's web filing system or approved software. Don't enter Social Security numbers.
- Sign electronically and submit. EFAST2 should show a filing status within 20 minutes.
- Check back for the status and fix anything flagged.
Single-employer defined benefit plans using the short form also file Schedule SB and its attachments. Don't attach Form 8955-SSA or an old Schedule SSA to the 5500-SF: the instructions say that registration statement for separated participants goes to the IRS separately. And once it's filed, the return can still be reviewed in more detail by the DOL, IRS or PBGC, so keep the records behind every figure.
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The verdict
For most small 401(k) and other plans with simple mutual fund investments, the 5500-SF is the right form and it's far lighter than the full Form 5500. The traps are the conditions people don't check: one employer security, one hard-to-value asset or a missed audit-waiver disclosure takes you off it. Put the 7th-month deadline in the diary, file Form 5558 if you need time, and use DFVC if a year has already slipped.
Frequently asked questions
Who can file Form 5500-SF?
Small plans, generally with fewer than 100 participants at the start of the plan year, that meet all eight conditions in the instructions, including no employer securities, 100% eligible plan assets and eligibility for the audit waiver.
When is Form 5500-SF due?
By the last day of the 7th calendar month after the end of the plan year, with a one-time extension of up to two and a half months available on Form 5558.
Can a plan with more than 100 participants file the 5500-SF?
Yes, if it filed as a small plan the year before and didn't cover more than 120 participants at the beginning of the plan year, and it meets the other conditions.
Is Form 5500-SF filed on paper?
No. It must be filed electronically through EFAST2, using the web-based system or approved software.
What is the penalty for not filing Form 5500-SF?
Up to $2,739 a day under ERISA, and $250 a day up to $150,000 under the Internal Revenue Code for certain plans, as of October 2026.
