How to calculate the gdp of transportation, warehousing and postal services?

1. production method: production method is a method to increase value by starting with the value of goods and services created in the production process and excluding the value of intermediate goods and services input in the production process. The calculation formula is as follows: added value = total output-intermediate input.

2. Income method: the income method, also known as the distribution method, accounts for the results of permanent unit production activities from the perspective of income generated in the production process. The calculation formula is: added value = remuneration of workers+net product tax+depreciation of fixed assets+operating surplus.

3. Expenditure method: that is, total consumption+total investment+net export, which is the current internationally accepted method.