Side hustle earners leave money on the table by ignoring tax deductions. The IRS requires you to report every dollar from freelancing, rideshare driving, online selling, or other gig work. But business deductions cut both your income tax bill and your self-employment tax obligation, which means real savings.
Here's what matters: most gig workers report their income correctly but fail to claim eligible expenses. This oversight costs hundreds or thousands annually.
Common deductible expenses for side hustles include home office space, equipment, supplies, software subscriptions, and vehicle mileage. If you drive for Uber or DoorDash, track every business mile. The 2025 standard mileage rate for business use is 67 cents per mile (up from 2024). This alone can generate substantial deductions if you drive regularly.
For home-based side gigs, calculate your dedicated workspace. A home office deduction works two ways. Use the simplified method at $5 per square foot (capped at 300 square feet), or calculate actual expenses like utilities, internet, and depreciation. The actual expense method often yields bigger deductions.
Other common deductions: freelance software (Adobe Creative Suite, project management tools), phone and internet bills, professional development courses, and marketing expenses. If you sell products online, inventory costs and shipping supplies count.
Self-employed filers must complete Schedule C (Profit or Loss from Business) and Schedule SE (Self-Employment Tax). The self-employment tax covers Social Security and Medicare at roughly 15.3 percent. Reducing your net profit through deductions cuts this tax significantly.
Keep organized records. The IRS scrutinizes side income more closely than traditional W-2 employment. Save receipts, invoices, and mileage logs. Apps like QuickBooks Self-Employed or Wave track expenses