The full explanation
Besides income tax, you pay self-employment tax, which covers Social Security and Medicare. Your profit or loss is figured by subtracting your business expenses from your business income, usually on Schedule C.
An example
Mario does yard work for several clients and bills them himself. He writes down what he charges and what he spends on gas and tools, because at the end of the year he will report his profit on Schedule C.
You will see it in…
- The Forms 1099-NEC or 1099-K sent by the people who pay you
- Your return, with Schedule C and Schedule SE
- Form 1040-ES, to figure and pay estimated taxes