Line 6 of Form 8919 is the total of the column (f) amounts you entered on Lines 1 through 5 for each firm that treated you as an independent contractor when you should have been an employee. Add those column (f) figures together and put the sum on Line 6. That same number also goes on Form 1040, line 1g, because once you file Form 8919 the IRS treats this pay as wages rather than self-employment income.1Internal Revenue Service. IRS Form 8919 – Uncollected Social Security and Medicare Tax on Wages
What Goes in Column (f)
Column (f) on Lines 1 through 5 asks for “total wages received with no social security or Medicare tax withholding and not reported on Form W-2.” For most filers this is the Box 1 amount from the Form 1099-NEC issued by the misclassifying firm. If you got a 1099-MISC instead, use the relevant compensation amount from that form.1Internal Revenue Service. IRS Form 8919 – Uncollected Social Security and Medicare Tax on Wages
Include only pay that would have been subject to FICA withholding if you had been correctly classified as an employee. Business expense reimbursements made under an accountable plan are not wages and don’t belong in column (f).
Adding the Firms Together
The math is straightforward addition. Suppose Firm A paid you $38,000 and Firm B paid you $22,000, both on 1099-NECs, and both should have treated you as an employee. Column (f) for Firm A is $38,000, column (f) for Firm B is $22,000, and Line 6 is $60,000.
If more than five firms misclassified you in the same year, attach additional copies of Form 8919 with Lines 1 through 5 completed on each. Fill in Lines 6 through 13 on only one form, using the combined totals across all copies.1Internal Revenue Service. IRS Form 8919 – Uncollected Social Security and Medicare Tax on Wages
What Not to Put on Line 6
A few items commonly get pulled into Line 6 by mistake:
- Unreported tip income. Tips go on Form 4137, not Form 8919.1Internal Revenue Service. IRS Form 8919 – Uncollected Social Security and Medicare Tax on Wages
- W-2 wages from other employers. Those already had FICA withheld and are reported normally on Form 1040. They come into the picture later on Line 8, but they are not part of Line 6.
- 1099 income from firms that correctly classified you as an independent contractor. That income still belongs on Schedule C and Schedule SE.
- Accountable-plan reimbursements for business expenses.
Line 6 is strictly the wages from firms you’re telling the IRS misclassified you, and only the portion that would have been FICA-taxable wages.
Where the Line 6 Number Goes Next
Line 6 has two destinations. The first is Form 1040, line 1g, where it’s reported as wages. Normally, 1099-NEC income is reported on Schedule C and taxed through Schedule SE, but the recipient instructions for Form 1099-NEC direct you to put the amount on the wages line of Form 1040 when you’re filing Form 8919. You do not put these amounts on Schedule C, and you do not calculate self-employment tax on them.2Internal Revenue Service. Instructions for Form 1099-NEC
The second destination is the rest of Form 8919 itself, where Line 6 becomes the base for the Social Security and Medicare tax calculation on Lines 7 through 13.
How Line 6 Feeds the Tax Calculation
The reason Line 6 matters is that everything below it works from that total. FICA at the employee rate is 6.2% for Social Security and 1.45% for Medicare.3Internal Revenue Service. Topic no. 751, Social Security and Medicare Withholding Rates
Social Security tax stops at an annual wage base. For 2026 the ceiling is $184,500.4Social Security Administration. Contribution and Benefit Base Line 7 shows the maximum, Line 8 asks for Social Security wages already reported on W-2s from other employers, and Line 9 subtracts Line 8 from Line 7 to leave the room still available under the cap. Line 10 multiplies the smaller of Line 6 or Line 9 by 6.2%. So if Line 6 is $60,000 and you had no W-2 wages, the full $60,000 gets the 6.2% rate. If you had $120,000 in W-2 wages from another job and Line 6 is $80,000, only $64,500 of Line 6 (the remaining cap) is taxed at 6.2%.
Medicare has no wage base. Line 11 applies 1.45% to the entire Line 6 amount. Line 12 handles the 0.9% Additional Medicare Tax if your total wages cross $200,000 for single filers, $250,000 for married filing jointly, or $125,000 for married filing separately.5Internal Revenue Service. Topic no. 560, Additional Medicare Tax Line 13 adds those pieces together, and that total goes to Schedule 2 (Form 1040), Line 6.6Internal Revenue Service. 2025 Schedule 2 (Form 1040)
A mistake in Line 6 propagates through every one of those steps, so it’s worth checking the addition and confirming each column (f) figure ties to the 1099 you actually received.
Make Sure You Actually Qualify Before Filing
Line 6 only exists as a valid number if you belong on Form 8919 in the first place. The form is for workers who performed services for a firm, believe the pay was for work as an employee, had no Social Security or Medicare tax withheld, and can point to one of the IRS reason codes in column (c).1Internal Revenue Service. IRS Form 8919 – Uncollected Social Security and Medicare Tax on Wages The codes cover an SS-8 determination letter (Code A), other IRS correspondence confirming employee status (Code C), an SS-8 you’ve filed but haven’t heard back on (Code G), or the situation where a firm gave you both a W-2 and a 1099 and the 1099 amount should have been in the W-2 wages (Code H). If none of the codes obviously fits but you still believe you were an employee, the instructions direct you to use Code G and file Form SS-8. That process takes at least six months, so file your return in the meantime rather than waiting on the determination.7Internal Revenue Service. Completing Form SS-8
Preference for a lower tax bill is not a reason code. The IRS uses behavioral control, financial control, and the type of relationship to decide employee status, and Form 8919 is only appropriate when those factors point toward employment.8Internal Revenue Service. Independent Contractor (Self-Employed) or Employee?