BanditAI
What is IRS Form 5558?
Form 5558 is an IRS form that gives plan sponsors and administrators an automatic extension of up to 2½ months from the plan's original due date to file certain employee benefit plan returns.
With TaxBandits, you can e-file Form 5558 online in just a few simple steps. Enter your plan information, our built-in validations check for errors, and securely submit your extension request electronically to the DOL—no printing or mailing required.
Form 5558 Deadline for 2025
Tax Year
To get an extension, Form 5558 must be filed by the original due date of the return you're extending.
Here are the deadlines for calendar-year plan filers:
| Original Deadline | Extended Deadline |
|---|---|
|
July 31, 2026 For Form 5500, 5500-SF, 5500-EZ, and 8955-SSA (calendar-year plans) |
October 15, 2026 2 1/2-month automatic extension |
Why TaxBandits
How TaxBandits Makes It Easy
to File Form 5558
From pulling your plan data to catching errors before
they cost you a penalty, TaxBandits handles the parts of
Form 5558 that usually go wrong.
Skip the Manual Data
Entry Altogether
Retyping your plan name, EIN, and plan number from last year's Form 5500 is where most extension errors start. TaxBandits pulls that data straight from your previously filed Form 5500 or 5500-SF, checks it against DOL records, and fills your Form 5558 automatically.
Never Worry About Errors
An EIN that's off by a digit or a plan name that doesn't exactly match last year's filing can result in rejections. TaxBandits catches these mismatches before you transmit, not after you've already missed your window to fix them.
Skip the Mail. File Form 5558 Straight to the DOL
Mailing a paper extension leaves you guessing whether it arrived on time. TaxBandits transmits it directly to U.S Department of Labor (DOL), so your extension is submitted instantly instead of sitting in the mail.
Get started with TaxBandits and request an extension in minutes.
For Third-Party Administrators & Tax Professionals
Filing Form 5558 for Multiple
Clients? We've Got You.
Whether you manage plans for five clients or five hundred, TaxBandits
gives your firm one place to track deadlines, delegate work, and file every extension.
Manage All Clients in One Place
Every client's plan, EIN, and deadline lives on a single dashboard, so nothing is scattered across separate logins, spreadsheets, or inboxes.
Bulk Upload Client Data
Import plan details for multiple clients in one upload instead of entering each one by hand, one client and one plan at a time.
Never Miss a Deadline
TaxBandits sends automatic reminders before each due date, so nothing slips through the cracks during your busiest filing season.
Delegate Across Your Team
Invite your team and delegate filings across your practice, so no single person has to carry the entire client load.
File your Form 5558 in minutes with TaxBandits!
Information Required to File
Form 5558
Most filers finish in under 5 minutes. Have these three things handy:
1. Plan Sponsor Name and EIN
The legal name and Employer Identification Number of the organization sponsoring the plan.
2. Plan Name and Plan Number
The official plan name and the 3-digit number assigned to the plan by the employer (e.g., 001, 002).
3. Plan Year Date
End date of the plan year for which the extension is being requested.
Why Struggle with Paper When There's a Smarter Way to File?
Not all filing methods are equal. Here's why TaxBandits is the smarter choice.
| How It Works | TaxBandits | Paper Filing |
|---|---|---|
| Form Completion |
 Step-by-step guided process
|
Manual — no guidance |
| Error Check |
Built-in audit error check before mailing
|
 You review and catch errors yourself
|
| Printing & Mailing |
We print and mail to the IRS for you
|
You print, stamp, and mail
|
| Postmark Confirmation |
Automatically recorded
|
You must track separately
|
| Form Requirement Detection |
Smart eligibility check
|
Manual IRS instructions
|
| Time to Complete | Under 3 minutes | 45–60 minutes |
| Support |
Chat, phone, and email
|
None
|
How Much Does it Cost to File Form 5558?
Create a free account and only pay when you file.
- 3-step easy filing process
- File from any device
- Built-in error checks
- World-class customer support
Frequently Asked Questions
Which forms does Form
5558 extend?
Form 5558 can extend the due date for:
- Form 5500 (Annual Return/Report of Employee Benefit Plan)
- Form 5500-SF (Short Form for Small Employee Benefit Plans)
- Form 5500-EZ (One-Participant Retirement Plan Return)
- Form 8955-SSA (Statement reporting participants with deferred vested benefits).
A separate Form 5558 must be filed for each plan and each form type.
Does the extension also apply to plan contributions or tax payments?
No. Form 5558 only extends the deadline to file the return — it does not extend the time to pay any taxes or contributions due.
What are the penalties for filing Form 5500 late without
an extension?
The DOL can assess penalties of $250 per day (up to $150,000) for late Form 5500 filings.
If you already missed the deadline, the DOL's Delinquent Filer Voluntary Compliance (DFVC) program may help reduce penalties. Contact TaxBandits support for guidance.
Where do I mail Form 5558?
If you e-file with TaxBandits, you don't need to mail anything — your Form 5558 is transmitted directly to the DOL through EFAST2, and you get instant confirmation
of receipt.
If you're filing a paper copy instead, Form 5558 should be mailed to:
Department of the Treasury,
Internal Revenue Service Center,
Ogden, UT 84201-0045.
We recommend e-filing over paper mail, since it's faster, confirms your extension was received on time, and avoids the risk of a paper form getting lost or delayed
in transit.
