The Last, but not least, Part of the Last Class of the International Finance Course: Recall the midterm test question about the Policy Mix: which would be the better



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The Last, but not least, Part of the Last Class of the International Finance Course:

Recall the midterm test question about the Policy Mix: which would be the better, out of Fiscal and Monetary Policies when Canada is faced with recession(not necessarily external IS shocks)?

“dG increases Y and thus has a negative impact on NX or CA, which pushes E up, but dG has a positive impact on Capital/Financial Account or KA, which pushes E down. The net (combined) impact on E is uncertain… If E goes down, X-M goes down and falls. This secondary fall in Y may cancel the initial increase in Y immediately due to dG.…Thus its impact on Y is not clear..(A)

Your answer about the Monetary policy was:

“dMS increases Y and thus has a negative impact on CA, which pushes BP down and E Up, and dMS leads to a fall in interest rate in the short-run, which decreases KA and BP down and E up. So the net impact on E is clearly upward. As E goes up, X-M increases if Marshall-Lerner condition holds…. This will increase Y.

Finally, your answer was:

“Thus, all in all, dMS or monetary policy is a better than dG or fiscal policy.



After you have learned the Mundell-Fleming model of IS-LM-BP, your correct new answer will be somewhat different: Let’s assume that capital is perfectly mobile between countries.

1.External IS Shocks and Flexible Exchange Rate System as Shield

First of all, if the recession is caused by an External IS shock. You start with the IS-LM intersection or ‘e’ of the domestic equilibrium standing below the BP curve and its corresponding Y falling short of Yf.

In this case, the government does not need to adopt any internal economic policy (fiscal or monetary policy) in order to recover the economy back to the pre-shock level. All that it has to do is to let the external economic policy of the Flexible FX rate system to take care of the situation: Over time, BP<0 and consequently E goes Up; if M-L condition holds, then CA UP, and IS and BP curves shift to the right and Y gets back to a pre-shock level.

You may recall the Flexible FX rate system itself is a perfect shield from the external IS shocks.



2.Policy Mix

If a recession is not caused by an external IS shock, then you start with IS-LM-BP curves intersecting at a point, and its corresponding Y stands lower than Yf. Your answer is to be more in line with a Policy Mix.

“G Up leads to Y up; Imports or M up, and CA down on the trade side; however, dG leads to interest rate Up, and capital inflows up, and KA UP. With the assumption of Perfect Capital Mobility, KA Up will inundate (will be larger than) CA Down. Thus, BP improves. If the Flexible FX rate system is also adopted, then E will go down; X-M will fall; and Y falls which offset an initial increase in Y. We can say that Fiscal Policy and Flexible FX system are not a good mix.”

“ With perfect K mobility, dG will lead to an increase in interest rate, and thus BP>0. If, along with Fiscal Policy, Fixed Exchange Rate system is chosen, the government intervenes in FX market, and tries to fix FX rate by buying FX and paying in domestic currency. Thus MS among the private sector will rise and this shifts LM to the and right and will push Y Up additionally. We can say that Fiscal Policy and Fixed FX rate system are a good mix in this case where K is mobile“

“One the other hand, dMS will lead to a CA down (Y up; M up; and thus CA down) and KA down ( i down; Capital Outflows Up; and thus KA down): thus the combined effect on BP is down and E Up in no uncertain terms under Flexible Exchange System. And if Marshall-Lerner condition holds, X goes Up and M down. Y will rise. Monetary policy and flexible FX rate system is a good policy mix.

However, if the government intervenes in FX market in order to fix E, it will have to sell FX and thus MS will go down. The LM curve will slide to the left, which decreases Y, which in turn offsets the initial increase in Y (due to dMS).”

Monetary policy and Fixed FX rate system is a bad policy mix.

“The conclusion is that if K is mobile(perfectly or relatively), Fiscal Policy with Fixed FX rate system may be good for an increase in Y: In this case, the Money Supply will automatically increase even without any planned expansionary monetary policy.

At the same time, Monetary Policy with Flexible FX rate system is also a good policy mix. When MS is increase, the falling interest rate leads to BP<0 on both trade and financial accounts. E goes up, and CA improves, and IS and BP curves move to the right. Thus, the two set of combinations or policy mix are comparable”.

(dG and Fixed FX rate system)

(Monetary Policy and Flexible FX rate system)

However, If capital is immobile, then both fiscal policy with flexible FX rate system, and monetary policy with flexible FX rate system are a good mix.

fiscal policy

with flexible FX rate system

Monetary Policy

With flexible FX rate system

In summary, when capital is mobile, fiscal policy and fixed FORECX rate policy are a good mix, and monetary policy with flexible FOREX rate policy are a good mix. When capital is immobile, fiscal policy with flexible FOREX rate policy is a good mix, and so is monetary policy with flexible FOREX rate policy.

We can use this combination for any situation:

For example, if a country must maintain flexible FOREX rate policy, and if a country has a high degree of capital mobility, then the only good mix is Monetary Policy with Flexible FOREX system.

If a country has a high degree of capital mobility, its government may go either for Fiscal Policy + Fixed FOREX rate policy, or for Monetary Policy + Flexible FOREX rate policy. The government should NOT have a wrong policy mix, such as Monetary policy with Fixed FOREX rate policy, or Fiscal Policy with Flexible FOREX rate policy.



Let’s cover some more cases:

3.External BP shocks (Positive)

Case of Switzerland before and after 2014, and its Negative interest rate policy.

Before Capital Inflows from Russia and Europe, the Swiss economy can be described as

After Foreign Capital Inflows, it has changed to:

Now the problem is that BP >0 and, under Flexible FX rate system, E goes down. CA may falls; IS and BP curves may shift to the left. Y falls.

To offset this detrimental impact of a falling E on trade account, the Swiss government introduces a negative interest rate policy. This is achieved by increasing MS, and increasing MS up to the point i<0.

Basically, the negative interest rate policy was adopted to cancel the negative impact of a rising capital inflow and a rising KA account and their negative impact on X and CA.

As a result of the negative interest rate policy done by an increase in MS, the Swiss currency CHF depreciates and X-M rises back. Y rises.

This Swiss case illustrates that a certain kind of sudden Capital Inflows could be detrimental to the economy: KA improves; E down; X-M down. This kind of capital inflows are pure financial portfolio investment. It raises KA and, through E falling, lowers X-M and thus shifts IS to the left.

These capital inflows of portfolio investment contrast with the Foreign Direct Investment(FDI), which may lower E and lower X on the one hand(shifting IS to the left), but at the same time, raises (physical) Investment or I and thereby shifts IS to the right. The net impact may be not all that detrimental on the economy.

4.External BP shocks (negative)

If the chairperson of the FED in U.S. raises interest rate, what will happen to Canada as a small open economy?

With a higher foreign interest rate, there occurs capital outflow from Canada. And thus KA falls. Recall that when KA falls, the BP curve shifts UP. BP<0.

Before Capital Outflows, the Canadian economy can be described as

After Capital Outflows, it has changed to:

What will happen next depends on the Exchange Rate System, or External Economic Policy the Canadian government adopts:

Under Flexible FX rate system, BP <0 means ED for FX. E goes up. CA may rises; both IS and BP curves may shift to the right. Y rises.

Alternatively, under Fixed FOREX rate system, the government has remove the Excess Demand for FOREX by selling FOREX. As the government sells FOREX, Money supply in the private sector falls. LM curve will shift to the left. Y falls.



Just you have seen here, there is no Shield from the External BP shocks.
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