Report the income on your 2019 return. If you incurred the mileage expense in 2018, report that on your 2018 return.
If you run your business on a cash basis (rather than accrual) you report your income when you receive it and your expenses when you pay them.
**Say "Thanks" by clicking the thumb icon in a post
**Mark the post that answers your question by clicking on "Mark as Best Answer"
