Tax deductions for the self-employed: what 1099 workers actually write off

If you get a 1099 instead of a W-2, the IRS considers you a business — and businesses get to deduct their expenses. That single idea is worth real money. Most freelancers overpay simply because nobody told them what counts. Here's what actually goes on a Schedule C.

First, the tax nobody warns you about

Employees split Social Security and Medicare taxes with their employer. When you're self-employed, you pay both halves — that's the self-employment tax, roughly 15.3% on top of your income tax. The silver lining: you get to deduct the "employer half," and every business deduction reduces this tax too. Deductions are worth more to you than to a W-2 employee.

The write-offs that matter most

• Home office. A dedicated workspace used regularly and exclusively for work can be deducted — either a simplified flat rate per square foot or a share of your actual rent, utilities, and insurance.
• Mileage and vehicle use. Driving to clients, gigs, and supply runs is deductible. Keep a mileage log — an app makes this painless. Commuting doesn't count; business driving does.
• Health insurance premiums. If you're not eligible for a spouse's employer plan, self-employed health insurance is often deductible — and it comes off before your income tax is figured.
• Retirement contributions. A SEP-IRA or Solo 401(k) lets you shelter far more than a regular IRA. This is the single biggest lever most freelancers never pull.
• Software, tools, and subscriptions. Your laptop, phone bill (business share), design tools, booking apps, cloud storage — if it's ordinary and necessary for your work, it belongs on the Schedule C.
• Professional help. Bookkeeping, legal advice, and yes — your tax preparation fee for the business portion — are deductible.
• Education and marketing. Courses that improve your current skills, website costs, business cards, and ads all count.

The ones that get people in trouble

• Meals. Business meals are generally only 50% deductible, and they need a business purpose. "I ate lunch while working" is not a business meal.
• Your everyday wardrobe. Clothing is deductible only if it's a uniform or protective gear you wouldn't wear otherwise.
• 100% business use of your car or phone. The IRS hears this constantly and almost never believes it. Claim the honest business percentage instead.

Don't forget quarterly taxes

No employer means nobody withholding taxes for you. If you'll owe more than a small amount at filing time, the IRS expects estimated payments four times a year. Missing them means penalties — even if you pay in full in April. A good rule of thumb: set aside 25–30% of every payment you receive.

The bottom line

Self-employment taxes feel brutal until you work the deduction side of the equation. Clean books plus every legitimate write-off is often the difference between dreading April and shrugging at it.

Got a Schedule C? Our Expanded tier covers freelancers and small business owners at a flat quoted price — and if your situation is more involved, we'll tell you exactly what it costs before any work starts.