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Official form guide
Form 8919: Uncollected Social Security and Medicare Tax on Wages
IRS Form 8919 is the Uncollected Social Security and Medicare Tax on Wages form. It reports the employee’s share of SS and Medicare taxes that were not withheld when the worker was treated as an independent contractor. For 2025 the maximum wage subject to the 6.2% SS tax is $176,100.
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IRS Form 8919 - Uncollected Social Security and Medicare Tax on Wages
IRS Form 8919 is the Uncollected Social Security and Medicare Tax on Wages form. It reports the employee’s share of SS and Medicare taxes that were not withheld when the worker was treated as an independent contractor. For 2025 the maximum wage subject to the 6.2% SS tax is $176,100.
Risk Radar
Scan points- 1Missing Form 8919 when required can trigger tax, penalties, and interest.
- 2Leaving column (c) blank and not providing a reason code for each firm listed.
- 3Using a single Form 8919 for more than five firms without attaching additional copies.
- 4Entering wages on line 7 that exceed the 2025 limit of $176,100.
- 5Applying the wrong tax rate—using a rate other than 0.062 for Social Security or 0.0145 for Medicare.
Plain English
Form 8919 tells the IRS how much Social Security and Medicare tax you should have paid when your employer didn’t withhold it. You fill it out and attach it to your regular tax return so the taxes are added to what you owe.
Submission Date
- Filing date: 2025-11-19 20:10:08
- Preparation window: collect IDs, supporting records, and signatures in advance.
- Final review: verify names, dates, and required fields before submission.
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Glossary Terms
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What this form is for
- Use this form when you performed services for a firm, believe the pay was not for independent‑contractor work, the firm did not withhold your share of Social Security and Medicare taxes, and a reason code applies.
- Do not use it when you performed services as an independent contractor.
- Check Schedule C (Form 1040) instead when you were truly an independent contractor.
Form selector
Use this form or another form?
You received a Form 1099‑MISC for services you performed as an independent contractor
Income is reported as self‑employment, not uncollected employee tax
✓ Verify you are not filing Form 8919
You have unreported tip income that your employer did not withhold
Tip tax is calculated separately from employee wages
✓ Confirm tip amount on your W‑2 before using Form 8919
You are unsure whether you were an employee or independent contractor
IRS will issue a determination of worker status
✓ File Form SS-8 by the same deadline as Form 8919
Deadline or filing window
Not stated in the official source
Checklist
What you need before filling it out
Reason code (c)
Reason code selection from list · Form 8919 instructions
Wages subject to Social Security tax (line 9)
Pay statements showing wages · Line 9 of Form 8919
Social Security tax amount (line 11)
Multiply line 10 by 0.062 · Computation on Form 8919
Medicare tax amount (line 12)
Multiply line 6 by 0.0145 · Computation on Form 8919
Total tax (line 13)
Sum of lines 11 and 12 · Line 13 of Form 8919
Before you submit
- 1Enter each firm’s name in column (a)
- 2Enter each firm’s EIN or SSN in column (b)
- 3Enter the correct reason code in column (c)
- 4Calculate line 9 as the smaller of line 6 or line 9
- 5Multiply line 10 by 0.062 and record the result on line 11
- 6Multiply line 6 by 0.0145 and record the result on line 12
- 7Add lines 11 and 12 and enter the total on line 13
- 8Attach Form 8919 to your Form 1040, 1040‑SR, 1040‑NR, or 1040‑SS
- 9Sign the form
- 10Keep a copy of the signed form for your records
How to file this form
- 1Gather wage statements and reason‑code information for each firm
- 2Complete columns (a)–(c) for each firm on Form 8919
- 3Compute the tax amounts on lines 9 through 13
- 4Attach the completed Form 8919 to your Form 1040 (or variant) and file with the IRS
- 5Retain the signed copy as proof of filing
Known limitations
- 1Do not file for services performed as an independent contractor
- 2Do not use for unreported tip income; use Form 4137 instead
- 3Do not use for self‑employment tax; use Schedule C and Schedule SE
- 4State or local government workers covered by a Section 218 agreement must obtain a written SSA determination
Field map
Compact field-by-field guide
Entity Info
1 items
Name and taxpayer ID of the entity claiming the credit.
Credit Info
1 items
Type of credit or incentive being claimed.
Calculation
2 items
The base amount used to calculate the credit.
Calculated credit amount after applying formulas and limitations.
Certification
1 items
Detailed breakdown supporting the credit calculation.
Signatures
1 items
Sign and date the form.
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Fillable formOpen in Editor->Form 8919 (2025) revision reads 20 25 and the PDF directs users to www.irs.gov/Form8919 for the latest information; the wage cap for Social Security tax increased to $176,100 for 2025.
What changed or needs a fresh check
- Edition date — confirm the revision reads 20 25
- Fee — Not stated in the official source
- Mailing address — Not stated in the official source
- Signature — confirm you sign the form before attaching it to your tax return
Quick Facts
Downloads
After you file
- 1Store the signed Form 8919 with your tax records for at least three years
- 2Monitor your Social Security statement to confirm the earnings credit
- 3If you receive an IRS notice of error, file an amended return with a corrected Form 8919
- 4Retain all supporting wage statements and reason‑code documentation
- 5Check your tax account transcript to verify the additional tax was posted
Sources
- SRCForm p.1 — revision date 20 25 appears in the header
- SRCForm p.1 — attachment instruction to Form 1040, 1040‑SR, 1040‑NR, or 1040‑SS
- SRCForm p.1 — filing requirement list (services for a firm, belief not independent contractor, no withholding, reason code)
- SRCForm p.2 — wage cap increase from $168,600 to $176,100 for 2025
- SRCForm p.2 — purpose of form (figure and report uncollected SS and Medicare taxes)
- SRCForm p.2 — don’t use for services performed as an independent contractor
- SRCForm p.2 — use Schedule C (Form 1040) for independent‑contractor income
- SRCForm p.2 — use Form 4137 for unreported tip income
- SRCForm p.2 — file Form SS‑8 separately and do not attach to tax return
- SRCForm p.2 — line 6 combined totals rule when more than five firms are reported
Common confusion points
Do I need to file if I was paid via 1099‑MISC?
The form is for employees treated as independent contractors, not for true independent‑contractor income
→ Verify you performed services for a firm that failed to withhold SS/Med taxes
Which reason code should I choose?
Multiple reason codes exist and are not listed in the excerpt
→ Refer to the full instructions and select the code that matches your situation
Can I attach Form SS‑8 to my tax return?
Source explicitly says not to attach Form SS‑8
→ File Form SS‑8 separately and do not include it with the return
What if I don’t know the firm’s EIN?
Uncertainty about the firm’s identification number
→ Enter “unknown” as instructed in column (b)
Is the increased wage cap automatically applied?
The cap changed for 2025 to $176,100
→ Confirm line 7 uses $176,100 as the maximum wage amount
Do I need a separate Form 8919 for my spouse?
Married filers must complete a separate Form 8919 for each spouse who meets the filing criteria
→ Verify each spouse’s eligibility before filing
Workflow map
Related forms and next steps
Current
After
Often used with
⚠ If something goes wrong
- Form 4137 — use for unreported tip income instead of Form 8919
Questions about IRS Form 8919
What is IRS Form 8919 used for?
Form 8919 tells the IRS how much Social Security and Medicare tax you should have paid when your employer didn’t withhold it. You fill it out and attach it to your regular tax return so the taxes are added to what you owe.
Who must file IRS Form 8919?
You must file Form 8919 if you performed services for a firm, believe you were an employee, the firm did not withhold your share of Social Security and Medicare taxes, and a listed reason code applies.
What information does IRS Form 8919 require?
The form collects each firm’s name, EIN or SSN, the reason code for filing, total wages subject to Social Security tax, and computes tax using 6.2% for Social Security and 1.45% for Medicare.
How do I complete IRS Form 8919?
List each firm on lines 1‑5, providing the firm’s name, identification number, and the applicable reason code. If you worked for more than five firms, attach extra Form 8919s for the additional firms. Enter the combined total wages on line 6, then on line 9 enter the smaller of line 6 or the wage cap, calculate Social Security tax on line 10 (multiply by 0.062) and Medicare tax on line 12 (multiply by 0.0145), add them on line 13, and attach the completed form to your Form 1040, 1040‑SR, 1040‑NR, or 1040‑SS.
What happens if IRS Form 8919 is filed incorrectly?
If the IRS determines you were not an employee, you may be billed for the additional tax, penalties, and interest.
Do I need to file if I was paid via 1099‑MISC?
The form is for employees treated as independent contractors, not for true independent‑contractor income Verify you performed services for a firm that failed to withhold SS/Med taxes
Which reason code should I choose?
Multiple reason codes exist and are not listed in the excerpt Refer to the full instructions and select the code that matches your situation
Can I attach Form SS‑8 to my tax return?
Source explicitly says not to attach Form SS‑8 File Form SS‑8 separately and do not include it with the return
Source transparency
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