The IRS requires gig workers to report all side hustle income, but most miss deductions that could slash hundreds or thousands from their tax bills. Business deductions reduce both your income tax and self-employment tax liability, creating double savings.

Side hustlers need to understand which expenses qualify. Home office deductions apply if you use a dedicated workspace exclusively for business. Calculate either 5 dollars per square foot (simplified method) or actual expenses like rent, utilities, and internet. The simplified approach works well for small spaces. Actual expenses suit larger home offices.

Equipment and supplies rank as legitimate deductions. Freelance writers deduct computers and software. Delivery drivers claim vehicle expenses through the standard mileage rate, currently 67.5 cents per mile for business use in 2025. Track all miles in a log. Independent contractors deduct tools, uniforms, and subscriptions required for their work.

Professional services count too. Accountants, lawyers, and bookkeepers who help manage your side business are deductible. Advertising and marketing expenses, from social media ads to business cards, qualify. Phone and internet bills used partly for business can be deducted proportionally.

The key mistake most gig workers make involves documentation. The IRS scrutinizes side hustles more heavily than traditional employment. Keep receipts, mileage logs, and bank statements proving every deduction. Digital tools like QuickBooks Self-Employed or FreshBooks automatically track mileage and expenses.

Schedule C is where self-employed individuals report side hustle income and deductions. This form ties directly to your personal tax return. Calculated properly, deductions can push your taxable income down significantly. Self-employment tax applies to net profits above 400 dollars, making deductions doubly valuable since they reduce both income tax and self-employment tax.

Starting your side hustle as a