Question

Suppose that the tax on interest income is levied on the nominal interest​ rate, the tax rate is 20 ​percent, and the real interest rate is 4 percent a year. There is no inflation.
Calculate the​ after-tax real interest rate and the true tax rate on interest income.

Answer 1

Answer:

• After-tax interest rate ⇒ 3.2%
• True tax on interest income ⇒ 20%

Explanation:

After-tax real interest rate:

= Real interest rate * (1 - tax rate)

= 4% * (1 - 20%)

= 4% * 80%

= 3.2%

True tax on interest income:

= 20%

True tax on interest income is the tax rate levied on the nominal interest rate which is 20%.