One of the most common problems that countries, especially developing countries face in this process is lack of expertise, as the methodology involves need highly professional experts, economics, and analysts that may complete the process in an accurate manner while eliminating as much human errors as they can (Bosch, pp. 11-14, 1992). However, a huge number of countries are experiencing shortage of such qualified individuals. Besides, lack of technical equipments is also significant issue exists in this methodology, as many countries do not have access to advanced technologies required for the calculation.
Thirdly, determination of depreciation is a complicated step in the process that creates problems for economists. One of the basic reasons behind this is the characteristic of depreciation being estimation rather than an accurate deduction that results in inaccurate figures of the national incomes (Dombusch, pp. 23-25, 2005). In addition, experts (Jain, pp. 52-57, 2008) have identified another problem that relates to decisions regarding inclusion and exclusion of certain products and services. In specific, economists face confrontations while deciding to consider government spending on social welfare, development expenses, interests against debts, etc that often results in wrong calculation of the national income.
Moreover, experts (Wall, pp. 39-42, 2008) have noticed that globalization has resulted in existence of huge number of foreign organizations working in a country, and economists face difficulties while determining whether to include income of such companies in their national income or not. However, the IMF has played a vital role in suggesting that economists should include income, as well as production activities in the owning country while ignoring the profits that should go in the national income of the parent country. Furthermore, studies (Jain, pp. 39-41, 2008) related to the calculation of national income have shown that