1099 contractor taxes: what you owe and how it is figured in 2026

What does a 1099 contractor owe?

When a client pays you as an independent contractor, nothing is withheld from your pay. You are responsible for three kinds of tax on your profit:

1. Federal income tax, at the same rates as everyone else, on your taxable income after deductions.
2. Self-employment (SE) tax: 15.3% of 92.35% of your net profit, covering both the employee and employer halves of Social Security and Medicare. The 12.4% Social Security part stops at $184,500 of net earnings for 2026. You owe SE tax when net earnings from self-employment are $400 or more.
3. State and local income tax, depending on where you live and work. Rules vary widely; see the state-by-state pages.

The tax is on net profit, not on what clients pay you. Every deductible business expense lowers both income tax and SE tax. See the list of business expenses for self-employed workers.

How the tax is figured, step by step

1. Net profit. Gross receipts minus business expenses on Schedule C.
2. SE tax. Net profit × 92.35%, then 12.4% Social Security (up to the wage base) plus 2.9% Medicare, on Schedule SE. The details are in how to calculate self-employment tax.
3. Adjusted gross income (AGI). Your income minus adjustments, including half of SE tax, the self-employed health insurance deduction and retirement plan contributions.
4. Standard or itemized deduction. For 2026 the standard deduction is $16,100 single, $32,200 married filing jointly and $24,150 head of household.
5. QBI deduction. Up to 20% of qualified business income, limited to 20% of taxable income before the deduction, on Form 8995. The simpler rules apply below $201,750 of taxable income for single filers. See the QBI deduction guide.
6. Income tax. Apply the tax brackets to what is left, then subtract credits and add SE tax.

Worked example: $80,000 of net profit, single filer

Assumptions: tax year 2026, single, no other income, the standard deduction, no credits, and no health insurance or retirement deductions. State tax is not included.

That is about 20.8% of net profit. Two things stand out. First, SE tax is more than double the income tax at this level, because it applies from the first dollar while income tax is softened by the standard and QBI deductions. Second, the QBI deduction is capped by taxable income here, not by QBI, which is common for freelancers with no other income. QBI is also reduced by the deductible half of SE tax.

For 2026, single brackets are 10% up to $12,400, 12% up to $50,400, 22% up to $105,700 and 24% up to $201,775, with higher rates above that. This contractor's next dollar of profit is taxed at 12% plus SE tax.

Paying through quarterly estimates

Because no tax is withheld, you generally must make estimated payments if you expect to owe $1,000 or more when you file. For 2026 the four due dates are April 15, June 15 and September 15, 2026, and January 15, 2027. You can avoid an underpayment penalty by paying at least 90% of your 2026 tax or 100% of your 2025 tax (110% if your 2025 AGI was over $150,000), spread across the year.

See quarterly estimated taxes for freelancers and how much to set aside for taxes, or use the quarterly estimated tax calculator.

The forms you will see

The difference between the two 1099s is explained in 1099-NEC vs 1099-K. Report all business income, including payments that never show up on a 1099. If you hire other contractors yourself, you may have to file 1099-NECs for them by January 31.

Deductions that lower the bill

• Business expenses on Schedule C, such as software, equipment, the home office deduction and business mileage. These cut both taxes.
• Adjustments: half of SE tax, self-employed health insurance and retirement contributions. These cut income tax only.
• The QBI deduction, up to 20% of business income, which also cuts income tax only.

If you also have a W-2 job

Wages and freelance earnings share one Social Security cap. If your W-2 wages already reach $184,500 for 2026, you skip the 12.4% Social Security part of SE tax and pay only the 2.9% Medicare part on your net earnings. Income tax is figured on your combined income, so freelance profit is taxed at your top bracket. You can cover the tax on side income by raising withholding at your job instead of, or alongside, estimated payments.

At higher incomes, an additional 0.9% Medicare tax applies once wages and self-employment income together pass $200,000 for single filers ($250,000 married filing jointly, $125,000 married filing separately).

Common mistakes

• Treating gross pay as profit. Tax is on net profit, so untracked expenses mean overpaid tax.
• Forgetting SE tax. In the example above it is the larger of the two federal taxes.
• Skipping estimates and facing a large bill, plus a possible penalty, in April.
• Reporting only what is on 1099s. Income below the reporting thresholds is still taxable.
• Mixing accounts. The IRS suggests a separate bank account for your business, which also makes records easier to keep.

Contractor vs employee

A W-2 employee splits Social Security and Medicare with the employer and gets tax withheld from each paycheck. A contractor pays both halves and handles payments alone, which is why a 1099 rate needs to be higher than an equivalent salary. The 1099 vs W-2 calculator compares the two, and the freelance rate calculator builds these taxes into a minimum hourly rate. To run your own SE tax number, use the self-employment tax calculator. When you are ready to file, follow how to file taxes as a freelancer.