7
Decompose GNDI, C and I into private and government
components:
Fiscal policy and the external sector (I)
[][]
[][]
pg
pg
ppp ggg
SS
pp gg
CAB Y C I Y C I
CAB S I S I
13
Private Sector Gap Public Sector Gap =
(Revenue - Expenditure)
Fiscal policy affects the current account through:
o Direct impact through demand
o Impact through the real exchange rate
o Impact on interest rates and country premia
Fiscal policy and the external sector (II)
Expansionary fiscal policy may lead to increase in interest rates,
capital inflows, and appreciation of currency
In general a larger fiscal deficit corresponds to a worse savings
,
—investment balance (weaker current account)
CAB identity is an ex-post identity, behavioral relationships must
to be taken into account:
• reducing transfers that are fully saved leads to a one-to-
one decrease in private savings: the CAB does not improve
14
• re
ucing spen
ing on
oreign goo
s causes
ower output
contraction than if reducing spending on domestic goods
• a fiscal expansion may crowd out I
p
or increase savings if
the private sector is Ricardian (little evidence of this)