llocating a specified percentage of sales revenue is one of the most popular methods for developing a marketing budget. The average allocation usually ranges between 9-12% of the annual budget, while the smallest businesses may go as low as 2%. If a business is launching a new product or service, advertising and publicity needs are greater, so the percentage will increase. The main advantage to using a percentage of sales is that the marketing budget will increase, or decrease, with the sales revenue of the company. The marketing budget will never spin out of control and deplete sales revenue.