There are a number of difficulties in the measurement of national income of a country. The following are the important difficulties of national income analysis:
- 1. National income is always measured in terms of money, but, there are certain goods and services whose money measurement is not possible. For example: the services performed by housewife for her family, voluntary services performed with a charitable object, etc. such items are excluded from the national income figures. This leads to an underestimate of the national income.
- 2. Income obtained from illegal activities is not included in the national income and their exclusion results in an under-valuation of the national income.