The formula for calculating net profit margin is ... Net profit margin, however, includes all expenses – including operating expenses, interest and taxes – offering a broader view of ...

Apple's operating profit margin = $71,230 / $233,715 = 30.5% Fitbit's operating profit margin = $310.7 / $1,516.6 = 20.5% We now see that, even as a percentage of revenue, Apple is more profitable ...