Side hustle earners leave thousands on the table by ignoring tax deductions that the IRS allows. The agency requires you to report all gig work income, but most freelancers, delivery drivers, and independent contractors fail to claim deductions that reduce both income tax and self-employment tax.
Business deductions work differently for side hustlers than they do for W-2 employees. You claim them on Schedule C when filing your 1040. The benefit: deductions lower your taxable income, which cuts your federal income tax bill. They also reduce your net self-employment income, which shrinks the 15.3 percent self-employment tax you owe on that profit.
Common deductions include home office space, vehicle mileage, internet and phone expenses, software subscriptions, equipment purchases, and contractor fees. For 2025, the standard mileage rate for business use is 67.5 cents per mile for most purposes. If you drive for Uber, DoorDash, or similar services, track every mile. Keep receipts for supplies, tools, and software. Calculate your home office deduction either with the simplified method (300 square feet maximum at $5 per square foot) or actual expense method.
The IRS scrutinizes Schedule C filers more than typical W-2 workers, so documentation matters. Use accounting software like QuickBooks Self-Employed or FreshBooks to categorize expenses automatically and generate reports for tax time. Save all receipts, mileage logs, and invoices for at least three years.
Self-employment tax often surprises side hustlers. You pay both the employer and employee portion of Social Security and Medicare taxes on profit over $400 annually. Deductions reduce this burden directly. A side hustle earning $15,000 with $5,000 in deductible expenses saves roughly $600