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Question : Debt dynamics .
a. Derive an expression for how the primary budget balance as a share of GDP and the existing debt-to-GDP ratio affect the change in the current debt-to-GDP ratio.
b. Use the equation derived in question a. to discuss what is required to stabilize the debt ratio. Explain the trade-off that governments face when contemplating debt stabilization. (4 points)
a.
Let the government budget constraint as follows:
Bt - Bt-1 = rBt-1 + Gt - Tt -----------equation 1
where Bt = current year debt level
Bt-1 = existing or previous year debt level
Tt = current year taxes
r = interest rate
Assume Yt = current year income
Then Bt / Yt = Current Debt-to-GDP Ratio
using equation 1, we have
Bt - Bt-1 = rBt-1 + Gt - Tt
Bt = (1+r) Bt-1 + Gt - Tt
Dividing both sides by Yt
Bt / Yt = (1+r) Bt-1 / Yt + Gt - Tt / Yt
Bt / Yt = (1+r) Bt-1 / Yt * (Yt-1 / Yt-1) + Gt - Tt / Yt
Bt / Yt = (1+r) Bt-1 / Yt-1 * (Yt-1 / Yt) + Gt - Tt / Yt ---------------equation 2
Now, Let g be the percentage change in income Y
g = Yt - Yt-1 / Yt-1
1 + g = Yt / Yt-1
Yt-1 / Yt = 1 / 1+g ----------equation 3
Put eq 3 in equation 2
Bt / Yt = ((1+r) / (1+g)) Bt-1 / Yt-1 + (Gt - Tt / Yt ) ---------equation 4
Gt - Tt / Yt = Primary Budget Balance as share of GDP
Bt / Yt = Current Debt-to-GDP ratio
Bt-1 / Yt-1 = Existing Debt-to-GDP ratio
Equation 4 shows how the current Debt to GDP ratio is dependent upont the existing raio and the primary budget balance as share of GDP.
As Primary Deficit increases debt to GDP will increase
As previous year debt to GDP ratio increases, the current ratio will also increase.
b.
Following are the factors that should be controlled to stabilize the ratio:
- interest rate: to be ensured that the interest rates on the debt should not exceed a permissible limit.
- growth rate: a sustainable GDP growth rate has to be maintained.
- Primary Budget Balance: to be ensured that the primary budget should not go into deficit. If this happens, then the interest payments will increase that can cause increase debt to GDP ratio
Trade-off:
The government faces a trade-off between managing the budgetary risk (fluctuations in the budget) and minimizing the cost of debt service (reduce interest payments and controlling interest rates to rise).
Please I need today answer for This question and it is very important and I need...
Please I need today answer for This question and it is very important and I need solution for this issue with all the details , and help me with all the details.Please write your answer to me by typing, not by handwriting, so that I can read and understand your answer clearly.BR/Hassan Question 3: Fiscal policy and long-run sustainability (20 points) a. Explain the concept of an automatic stabilizer in the context of fiscal policy. (2 points) b. Explain what...
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Hi I need your answer for these parts a and b for this quistion below. BR/Ha Question :Debt dynamics. a. Derive an expression for how the primary budget balance as a share of GDP and the existing debt-to-GDP ratio affect the change in the current debt-to-GDP ratio. b. Use the equation derived in question a. to discuss what is required to stabilize the debt ratio. Explain the trade-off that governments face when contemplating debt stabilization.
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