W-2 vs 1099 — why the same paycheck can cost a contractor 7.65% more in tax

Gig work, freelancing, and "we'll pay you as a contractor" offers all put you on a 1099 instead of a W-2. The pay can look identical. What happens at tax time is very different — and it catches a lot of people with a bill they didn't see coming.

The core difference

W-2 employee

• Your employer withholds federal and state income tax from every paycheck
• You pay 7.65% for Social Security and Medicare; your employer pays another 7.65%
• You may get benefits, and you're covered by minimum wage, overtime, unemployment, and workers' comp laws

1099 independent contractor

• Nothing is withheld. You get the full amount and are responsible for the tax
• You pay both halves of Social Security and Medicare as self-employment tax: 15.3% (on 92.35% of your net earnings; the Social Security part stops at the annual wage base)
• No employer benefits, and usually no unemployment or overtime protection

The self-employment tax math

Say you net $40,000 from contract work in a year:

• $40,000 × 92.35% = $36,940 subject to self-employment tax
• × 15.3% = about $5,650 in self-employment tax
• plus regular federal (and state) income tax on top

You do get to deduct half of the self-employment tax when figuring income tax, and you only pay on net earnings — which is why tracking expenses matters.

Pay during the year, not just in April

The IRS expects tax to be paid as income comes in. If you expect to owe $1,000 or more for the year, you're generally supposed to make quarterly estimated payments — due around April 15, June 15, September 15, and January 15. Skip them and you can owe an underpayment penalty on top of the tax.

A common rule of thumb: set aside 25–30% of every contract payment in a separate savings account until you know your real number.

Deduct your actual business costs

Contractors can deduct ordinary and necessary business expenses: equipment and software, a phone and internet (the business share), mileage for business driving, a dedicated home office, supplies, and fees. Keep receipts and a simple log — every legitimate deduction lowers both income tax and self-employment tax.

Forms, and the thresholds that changed

• Clients who pay you $2,000 or more in a year (starting with 2026 payments; it was $600 before) should send you a 1099-NEC
• Payment apps and marketplaces send a 1099-K only if you receive over $20,000 and more than 200 transactions in a year
• The income is taxable either way. Not getting a form doesn't mean you don't owe — it just means you have to keep your own records

Are you actually a contractor?

Your employer doesn't get to decide just by what it calls you. If a company controls how, when, and where you do the work, provides the tools, and you work only for it, you may legally be an employee who's been misclassified — which shifts taxes and denies you protections. You can ask the IRS to decide with Form SS-8, and the Department of Labor and your state labor agency handle misclassification complaints.

Quick reference

• W-2: taxes withheld, employer pays half of the 15.3% payroll tax
• 1099: nothing withheld, you pay the full 15.3% self-employment tax plus income tax
• Expect to owe $1,000+? Pay quarterly: ~Apr 15, Jun 15, Sep 15, Jan 15
• Set aside 25–30% of each payment
• Income is taxable even if you never get a 1099
• Controlled like an employee? You may be misclassified — IRS Form SS-8