The formula to calculate the national income is:
\[ \text{NI} = C + GE + I + E - IM + FPNR - DPBNR \]
Where:
National income is a monetary estimate of the total monetary income of a country. It’s similar and in some cases the same as the GDP, or gross domestic product.
Let's consider an example:
Using the formula to calculate the national income:
\[ \text{NI} = 1,000,000 + 500,000 + 300,000 + 200,000 - 100,000 + 50,000 - 30,000 = 1,920,000 \]
This means that the national income for this scenario is $1,920,000.