Gross income refers to the total earnings an individual receives from all sources before any deductions or taxes are applied. It includes all forms of income, such as wages or salary, bonuses, rental income, interest income, dividends, business income, and any other sources of earnings. To calculate gross income, follow these steps: Determine all sources of income: List down all the different sources of income you have received during the specific period for which you want to calculate your gross income. This may include your salary, bonuses, rental income, interest earned from bank accounts, dividends from investments, etc. Add up the income from each source: Add up the income from each source to get the total earnings before any deductions or taxes.