The ratio of profit to expenses. This calculation differs from ROAS as it includes all expenses and not just the funds spent on the advertising itself. If a company spends $1,000 on advertising, $1000 on product samples, and $500 for a booth space at a convention and makes $4,000 in sales, the ROI is 60% (($4K-($1K+$1K+$500))/($1K+$1K+$500)).
