Calculating Service Contributions to GDP Trying to get some clarification on how GDP is calculated for service industries.

Are input resources netted out (e.g. fuel for an airline), the same way wheat would be for a loaf of bread? 

What about investment assets (e.g. airplanes for an airline) -- these get fully counted toward GDP the year they're purchased?
Services will be calculated at the final price they are given in market. That price includes all value added items in providing the service. So, to calculate contribution of airlines in GDP, you just need to sum up the total value of tickets that are sold. Other things will automatically be counted in that.