1099 or W-2: Who Really Pays More Payroll Tax?
The biggest hidden cost of freelance and contract work isn't income tax bracket โ it's payroll tax. A 1099 independent contractor owes the full 15.3% self-employment (SE) tax, covering both the "employer" and "employee" shares of Social Security and Medicare. A W-2 employee earning the exact same pay only has 7.65% withheld; the employer quietly covers the other 7.65% and it's never part of the employee's taxable pay. Half of the SE tax is deductible as an adjustment to income, which softens the blow somewhat. This calculator takes your annual pay and marginal tax rate, then compares your net 1099 tax burden to what a W-2 employee earning the same amount would have withheld โ showing the real extra cost of contractor status.
How It's Calculated
| Step | Item | Formula |
|---|---|---|
| 1 | SE tax (1099) | Pay ร 92.35% ร 15.3% |
| 2 | SE deduction benefit | (SE tax รท 2) ร marginal tax rate |
| 3 | Net 1099 tax burden | SE tax โ deduction benefit |
| 4 | W-2 FICA withholding | Pay ร 7.65% |
| 5 | Extra cost of 1099 | Net 1099 burden โ W-2 withholding |
This tool compares only the payroll-tax side of employment classification. It doesn't include the value of employer-sponsored benefits (health insurance, 401(k) match, PTO) that typically come with W-2 jobs, or the business expense and QBI deductions unique to 1099 income, which can offset part of this gap.
Frequently Asked Questions
As a 1099 independent contractor, you're both the "employer" and the "employee" for Social Security and Medicare purposes, so you owe the full 15.3% self-employment tax (12.4% Social Security + 2.9% Medicare). A W-2 employee only pays the 7.65% employee half โ the employer pays the other 7.65% separately, and it never touches the employee's paycheck.
No โ it's a real cost the employer pays on top of your wages, but it isn't withheld from your pay or added to your taxable income. As a 1099 contractor, you're effectively paying both halves yourself.
Yes. The 12.4% Social Security portion only applies up to the annual Social Security wage base ($176,100 for 2025); above that, only the 2.9% Medicare portion continues to apply. This calculator assumes your pay is below the wage base cap for simplicity.
โป Actual figures may vary by individual circumstances. This is a reference estimate only.