Gig workers can deduct ordinary and necessary business expenses on Schedule C. Common deductions include mileage (using the standard mileage rate or actual costs), a portion of your cell phone bill, supplies, platform fees, and any equipment used for work. If you use your home as a base of operations, you may qualify for the home office deduction. Keep receipts for everything and track your mileage daily — detailed records protect you if the IRS ever questions your deductions. These deductions can significantly reduce what you owe.