Can I deduct mileage for my gig or delivery work?

Yes, and it's usually the single largest deduction for drivers and couriers. You can use the IRS standard mileage rate, which the agency updates each year to cover gas, wear, insurance, and depreciation in one per-mile figure, or you can deduct your actual vehicle expenses by the business-use percentage. Most gig workers find the standard rate simpler and often larger. The key requirement is a contemporaneous mileage log showing date, miles, and business purpose; apps that track trips automatically make this easy. Only business miles count, not your commute-equivalent personal driving. You generally must choose the standard mileage method in the first year you use the car for business if you want the option to switch later. Confirm the current rate at irs.gov.