National Income is a measure of the economic performance of a country and is typically calculated based on income generated within the borders of that country. It is a key indicator of a nation's economic health and is used for various economic analyses and policy decisions. While specific methods and components may vary by country, certain concepts are generally included or excluded in the estimation of National Income.

1. Retained Earnings of Residents' Companies in Abroad: Retained earnings of residents' companies operating in foreign countries are typically included from the estimation of National Income. T

2. Bonus: Bonuses paid to employees are generally included in the estimation of National Income. Bonuses represent a form of compensation paid to workers for their contribution to the production process. They are considered part of the compensation of labor, which is a component of National Income.

3. Scholarships: Scholarships are typically excluded from the estimation of National Income. Scholarships are financial aid provided to individuals for educational purposes. They do not represent economic production or income generated as a result of economic activity. Instead, they are a form of transfer payment.

4. Royalty: Royalty payments are generally included in the estimation of National Income. Royalties represent payments made for the use of intellectual property or other assets. They are considered a form of income generated within the country and are thus included in the calculations of National Income.