Self-employed freelancers and sole proprietors can deduct legitimate business expenses on Schedule C, reducing both income tax AND self-employment tax (15.3% on net self-employment earnings). Key deductions: 50% of self-employment tax (above-the-line), self-employed health insurance premiums (100% above-the-line), home office (proportional), business vehicle, equipment and software, professional development, retirement account contributions (SEP-IRA up to $69,000), and the 20% QBI deduction for qualified business income.
At a glance
Key Facts
Self-Employment Tax Rate
15.3% on net self-employment income up to $168,600 (2024 SS wage base); 2.9% Medicare on income above that. Additional 0.9% Medicare surtax on SE income above $200K (single) / $250K (MFJ).
SE Tax Deduction
50% of SE tax is deductible above-the-line (Schedule 1). On $100K net SE income: SE tax ≈ $14,130; deduct $7,065. This reduces both federal income tax AND state income tax.
QBI Deduction
20% deduction on qualified business income from a pass-through entity or sole proprietorship under §199A. Subject to W-2 wage limitations and excluded industries (SSTBs) above income thresholds (~$197K single / $383K MFJ in 2024).
Health Insurance Deduction
100% of health, dental, and vision insurance premiums for yourself, spouse, and dependents are deductible above-the-line — reducing AGI. Not deductible if eligible for employer-sponsored health coverage.
Retirement Contributions
SEP-IRA: up to 25% of net SE income, max $69,000 (2024). Solo 401(k): up to $23,000 deferral + 25% employer contribution, max $69,000 ($76,500 if 50+). SIMPLE IRA: up to $16,000 employee + 3% match.
Home Office Deduction
If you use part of your home exclusively and regularly for business: deduct proportional home expenses (mortgage interest/rent, utilities, insurance, depreciation). Or use simplified method: $5/sq ft up to 300 sq ft ($1,500 max).
Introduction
Self-employed individuals — freelancers, consultants, gig workers, sole proprietors — pay both employer and employee portions of Social Security and Medicare (self-employment tax: 15.3% up to the SS wage base, then 2.9% above). This creates a heavy tax burden that many offset with business deductions. This guide covers every significant deduction available to self-employed taxpayers and how to maximize each one legally.
Section 01
Complete List of Self-Employment Deductions
Schedule C deductions reduce your net SE income — reducing both income tax and SE tax:
Above-the-Line Deductions (Reduce AGI)
These deductions reduce your Adjusted Gross Income regardless of whether you itemize:
50% of SE tax: Deduct half of your calculated SE tax on Schedule 1. This mirrors the employer share of FICA that W-2 employees receive.
Self-employed health insurance: 100% of premiums for health, dental, and vision insurance for yourself, spouse, and dependents. Cannot exceed your net SE income. Not available if you were eligible for an employer health plan through a spouse's employer.
SE retirement contributions: SEP-IRA, Solo 401(k) employer contributions, or SIMPLE IRA contributions reduce AGI directly — dollar for dollar.
Schedule C Business Expense Deductions
These reduce net SE income (before SE tax is calculated):
Home office (exclusive use): Exclusive, regular use portion of your home for business. Regular method: prorate rent/mortgage interest, utilities, insurance, depreciation, and repairs by the percentage of home used for business. Simplified method: $5 per square foot, up to 300 square feet ($1,500 maximum). Important: the home office deduction cannot create a loss for the year (excess carries forward).
Vehicle expenses: Business use of personal vehicle: either actual expenses (gas, insurance, repairs, depreciation) multiplied by business-use percentage, OR standard mileage rate ($0.67/mile in 2024). Keep a mileage log. Long-distance business travel is 100% deductible.
Equipment and technology: Computers, printers, cameras, microphones, monitors, tablets — 100% deductible if used exclusively for business (Section 179 election) or depreciated over years. Bonus depreciation (60% in 2024) applies to business equipment.
Software and subscriptions: Adobe Creative Cloud, Notion, Slack, Zoom, design tools, professional databases — 100% deductible business expenses.
Marketing and advertising: Website hosting, domain registration, social media advertising, Google Ads, business cards, professional photos — all deductible.
Professional development: Online courses, professional certifications, books, workshops, conferences — deductible when directly related to your current business (not to start a new business).
Professional services: Accountant/CPA fees, attorney fees related to business, business banking fees — deductible.
Business travel: Flights, hotels, rental cars, 50% of business meals while traveling away from home overnight — deductible at business-use rate.
Phone and internet: Business-use percentage of cell phone and internet bills — deductible. If used 70% for business, deduct 70% of the total bill.
Contractor payments: If you hire subcontractors, their payments are deductible business expenses. File 1099-NEC for any contractor paid $600+ in the year.
Business insurance: Professional liability (E&O), general liability, business property insurance — fully deductible.
Bank and payment processing fees: Business checking account fees, Stripe/PayPal/Square transaction fees — deductible.
The QBI Deduction (§199A)
The 20% Qualified Business Income (QBI) deduction is one of the most valuable for self-employed taxpayers. It deducts 20% of net qualifying business income before calculating income tax. At $100,000 of net SE income: the QBI deduction may reduce taxable income by $20,000 — saving approximately $4,400 in a 22% bracket. Limitations: the deduction phases out for Specified Service Trade or Business (SSTB) owners — consultants, attorneys, accountants, financial advisors, doctors, and other professional service businesses — above $197,300 (single) / $383,900 (MFJ) in taxable income for 2024. W-2 wage limitations apply for larger businesses.
Section 02
Retirement Accounts: The Biggest SE Tax Saver
Self-employed retirement contributions reduce income tax the most for high SE earners:
SEP-IRA: Simplest High-Contribution Option
A SEP-IRA allows contributions of up to 25% of net SE income (after SE tax deduction), maximum $69,000 for 2024. Simple to set up at any brokerage (Fidelity, Vanguard, Schwab — free). No administrative burden. Contributions are due by the tax return deadline including extensions. For a self-employed person with $200,000 net SE income: maximum SEP contribution = 25% × $184,740 (after SE deduction) ≈ $46,185. This reduces taxable income by $46,185 — saving approximately $10,160 in a 22% bracket.
Solo 401(k): Best for Maximum Contributions
A Solo 401(k) allows both an employee deferral component ($23,000 in 2024; $30,500 if 50+) AND a profit-sharing (employer) component (up to 25% of compensation). Combined: up to $69,000/$76,500 in 2024. For someone with $100,000 net SE income: employee deferral $23,000 + employer 25% × ~$92,935 = $23,000 + $23,234 = $46,234. The Solo 401(k) can reach the $69,000 cap at lower income levels than a SEP-IRA (because of the flat employee deferral component). The Solo 401(k) also allows Roth contributions and the mega backdoor Roth strategy (after-tax contributions + in-plan Roth conversion) — unavailable in a SEP-IRA.
SE deduction optimization, QBI qualification, retirement plan selection, and home office documentation require CPA guidance. TaxHub connects you with self-employment tax specialists.
⚠ Not for simple single-state returns. Free filing is fine for straightforward W-2 situations.
Can I deduct the full cost of a laptop or computer I use for my freelance business?
If the laptop is used exclusively for business: yes, 100% deductible in the year of purchase using the Section 179 election (immediate expensing) or bonus depreciation (60% in 2024 + depreciation on the rest). If the laptop is used for both personal and business purposes: only the business-use percentage is deductible. Example: you use a $2,000 laptop 80% for client work — deduct $1,600 (80%). Keep records of business vs personal use, especially for expensive equipment. The simplified approach many self-employed use: have a dedicated business-only device with no personal use — then it is 100% deductible without complex allocation.
Q
How does the home office deduction work for renters vs homeowners?
For renters: the home office deduction is based on your actual monthly rent. If your home office is 200 square feet and your apartment is 1,000 square feet (20%), deduct 20% of annual rent as the home office deduction. Also deduct 20% of utilities, renters insurance, and internet. For homeowners: instead of rent, deduct 20% of mortgage interest, real estate taxes, homeowners insurance, utilities, and straight-line depreciation on the business-use portion of the home (depreciation rate: 39 years for business use of home). Note for homeowners: accumulated depreciation on the home office must be 'recaptured' when you sell the home — it reduces your §121 primary residence exclusion by the amount of depreciation claimed. Many homeowners use the simplified method ($1,500 cap) to avoid the depreciation recapture complexity.
Q
Do I pay self-employment tax on all my freelance income?
SE tax applies to your NET self-employment income (gross revenue minus allowable Schedule C deductions). If your gross freelance revenue is $80,000 and you have $20,000 in deductible business expenses: net SE income = $60,000. SE tax ≈ $60,000 × 92.35% × 15.3% ≈ $8,480. The 92.35% factor adjusts for the employer-side deduction. Note: SE tax applies only if net SE income is $400 or more in the year. If you have multiple income sources (W-2 wages + freelance), the SE tax is calculated only on SE earnings — but the Social Security component phases out once your combined wages + SE earnings exceed the $168,600 SS wage base (2024).
Disclaimer:This guide provides general tax information for educational purposes only. Self-employment tax rules are complex and depend on specific facts. This is not tax advice. Consult a CPA for self-employment tax planning specific to your business.