The IRS requires you to report all side hustle income, but most gig workers leave money on the table by overlooking legitimate deductions. Business deductions reduce both your income tax bill and your self-employment tax obligation, potentially saving hundreds or thousands annually.
Side hustle income covers freelance work, gig economy jobs, online sales, consulting, and any other self-employment activity. The tax code allows you to deduct ordinary and necessary business expenses from this income before calculating what you owe.
Common deductible expenses include home office space, equipment and supplies, vehicle mileage, internet and phone bills, software subscriptions, professional services, and marketing costs. If you use part of your home exclusively for business, you can claim the home office deduction. The simplified method allows $5 per square foot up to 300 square feet, or you can calculate actual expenses like rent, utilities, and insurance proportional to your business use.
Mileage deductions apply to driving for business purposes. The 2024 standard mileage rate sits at 67 cents per mile for business driving, though 2025 rates may differ. Keep a mileage log documenting date, destination, purpose, and miles driven.
Equipment purchases often qualify for depreciation deductions spread across multiple years, or you may use Section 179 expensing to deduct the full cost immediately if the item costs under $1,160,000. Software subscriptions, website hosting, and accounting services count as deductible expenses.
Self-employment tax presents the biggest opportunity for savings. Unlike W-2 employees, side hustlers pay both employer and employee portions of Social Security and Medicare taxes. However, you can deduct half of your self-employment tax when calculating adjusted gross income, reducing your overall tax burden.
Document everything. Save receipts, invoices, mileage logs,