What goes on an income statement

Revenues, Expenses, and the resulting net income/loss

Some also consider gains and losses to be apart of the income statement

BTW this is a more of a business question than a mathematics question.

The income statement consists of revenues (money received from the sale of products and services, before expenses are taken out, also known as the "top line") and expenses, along with the resulting net income or loss over a period of time due to earning activities.