Self-Employed? The Deductions Most People Miss

When you're self-employed, every dollar of legitimate deductions you miss is a dollar you hand the IRS for no reason. And because self-employment income gets hit with both income tax and the 15.3% self-employment tax, those missed write-offs sting twice as hard.

Here are the deductions freelancers, gig workers, and 1099 contractors most often overlook — all of them legitimate, all of them on Schedule C.

First, the deduction nobody talks about

Before the line-by-line write-offs, know this: you can deduct half of your self-employment tax as an adjustment to income. If you owe $8,000 in SE tax, you deduct $4,000 against your income tax. It happens automatically on your return, but it's worth understanding because it offsets one of the biggest costs of being your own boss.

The home office deduction

This is the most-feared and most-missed deduction. The myth that it's an automatic audit trigger keeps people from claiming money they're entitled to. The reality: if you qualify, claim it.

You qualify if you use part of your home regularly and exclusively for business. "Exclusively" is the key word — the corner of the dining table you also eat at doesn't count, but a dedicated room or a clearly defined work area does.

Two ways to calculate:

• Simplified method: $5 per square foot, up to 300 square feet ($1,500 max).
• Actual expense method: Figure the business-use percentage of your home, then apply it to rent or mortgage interest, utilities, insurance, and repairs.

The actual method takes more record-keeping but often yields a bigger deduction, especially in high-rent areas.

Health insurance premiums

If you pay your own health insurance and aren't eligible for coverage through an employer or a spouse's plan, you can generally deduct 100% of your premiums — for you, your spouse, and dependents. This is an above-the-line deduction, so you get it even if you don't itemize. Dental and qualifying long-term care premiums often count too.

Retirement contributions

Self-employment comes with powerful retirement options that double as deductions:

Account	Rough 2025 contribution limit	Notes
SEP-IRA	Up to 25% of net SE earnings, capped near $70,000	Easy to set up
Solo 401(k)	Employee + employer portions, higher total	Best for maximizing
SIMPLE IRA	Lower limits	Simpler administration

Contributions reduce your taxable income now while building your own retirement. For high earners, a Solo 401(k) can shelter a large chunk of income.

Vehicle and mileage

If you drive for work, you're likely under-claiming. You can use either:

• Standard mileage rate: A set rate per business mile (track every trip).
• Actual expenses: Prorate gas, insurance, repairs, and depreciation by business-use percentage.

The catch is documentation — keep a mileage log with dates, destinations, and purpose. Commuting from home to a regular workplace doesn't count, but trips to clients, suppliers, and job sites do.

The "small stuff" that adds up fast

Individually these feel minor; together they often total thousands:

• Phone and internet — the business-use percentage
• Software and subscriptions — design tools, accounting software, cloud storage
• Professional development — courses, certifications, industry books
• Bank and merchant fees — including payment-processor and PayPal fees
• Business insurance — liability, professional, errors-and-omissions
• Professional services — your accountant, bookkeeper, or legal fees
• Advertising and marketing — website, ads, business cards, portfolio hosting
• Office supplies and small equipment

Startup and equipment costs

Just getting going? You can generally deduct up to $5,000 in startup costs in your first year, with the rest amortized over time. And for equipment — a laptop, camera, or tools — Section 179 and bonus depreciation often let you deduct the full cost in the year you buy it rather than spreading it out.

Business meals

You can deduct 50% of the cost of business meals — meeting a client, networking over lunch, or eating while traveling for work. Note the document, the people present, and the business purpose. (Entertainment, like event tickets, is generally no longer deductible.)

The qualified business income deduction

Don't overlook the QBI deduction (Section 199A). Many self-employed people can deduct up to 20% of their qualified business income, subject to income limits and other rules. It's separate from your Schedule C expenses and can meaningfully cut your tax — but it's easy to compute incorrectly or miss entirely.

Records are what make deductions stick

A deduction is only as good as your ability to prove it. Build a simple system:

• A separate business bank account and card
• Receipts saved (a photo in a folder is fine)
• A mileage log kept as you go, not reconstructed in April
• Monthly bookkeeping so nothing slips through the cracks

Good records turn defensible deductions into bulletproof ones — and make tax time far less painful.

Stop overpaying on your self-employment taxes

Most self-employed people leave money on the table simply because they don't know what's deductible or how to document it. If you'd like a second look at your situation — to make sure you're claiming everything you legitimately can and handling your quarterly estimates right — reach out for a free, confidential consultation. A little planning now can save you a lot at filing time.