Annual turnover in business refers to the total amount of money a business receives from the sale of goods and services over a specific period of time, usually a year. It is sometimes referred to as "gross revenue" or "total sales". Turnover is an important measure of a businesss performance and financial health, and it can be used to understand how well a business is doing on a yearly basis.

It is important to note that turnover is different from profit, which is a measure of earnings. Turnover only considers income generated through a businesss main trading activities and does not take into account things like bank interest or money received from the sale of assets.

Calculating annual turnover is straightforward as long as a business has kept an accurate record of its sales. Turnover can also be used to describe how often a businesss inventory or stock is replaced.

In summary, annual turnover in business refers to the total amount of money a business receives from the sale of goods and services over a specific period of time, usually a year. It is an important measure of a businesss performance and financial health, and it can be used to understand how well a business is doing on a yearly basis.