Form 8919 Misclassified Employee Tax Calculator 2026

Form 8919 (Uncollected Social Security and Medicare Tax on Wages) is filed by workers who were misclassified as independent contractors but should have been employees. Instead of paying both the employee and employer share of FICA (like on Schedule SE), Form 8919 allows the worker to pay only the employee share (7.65%) — the employer remains liable for their half. To use Form 8919, the worker must have a valid reason code (A through H) showing the IRS or employer agrees, or the worker has filed Form SS-8 for a determination.

Reason codes for Form 8919: Code A — you filed Form SS-8 and received a determination that you are an employee; Code B — you filed Form SS-8 but have not yet received a determination; Code C — you received a Form W-2 from the firm for the same services; Code D — a prior audit determination or court decision established you are an employee; Code E — a prior IRS letter to the firm indicated you may be an employee; Code F — you did not file Form SS-8 (only limited use); Code G — you work for a firm that treats similar workers as employees; Code H — you work for a government or tax-exempt organization that told you to use this code.

On Schedule SE, a misclassified worker pays both the employee AND employer share of FICA: 15.3% × 92.35% × net earnings. On Form 8919, you pay only the employee share: 7.65% × wages (no 92.35% multiplier). For $100,000 of wages, Schedule SE results in approximately $14,130 in FICA, while Form 8919 results in $7,650 — a saving of about $6,480. The employer owes the remaining $7,650 separately. Additionally, on Schedule SE there is no deduction of business expenses before computing the tax; Form 8919 is based on total wages paid.

Form SS-8 (Determination of Worker Status for Purposes of Federal Employment Taxes and Income Tax Withholding) is a request for the IRS to formally determine whether a worker is an employee or independent contractor. Filing SS-8 triggers an IRS investigation using 20+ behavioral and financial control factors. The determination process can take over a year. Workers can file Form 8919 with reason code B while SS-8 is pending. A favorable SS-8 determination allows reason code A for all subsequent years. Filing SS-8 may create tension with the hiring firm, so workers should consider this carefully.

Yes — if you have been misclassified for multiple years, you can file Form 8919 (or amended returns with Form 8919) for all open tax years. The general statute of limitations is 3 years from the due date of the return, but 6 years if there was substantial understatement of income. For misclassification, the IRS may assess Section 3509 rates against the employer (1.5%/0.204% reduced rates if employer filed no returns vs 3%/0.408% if returns were not filed). The worker still recovers by paying only the employee share regardless of the employer rate assessed.