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Correcting a BoP Deficit. Fixed Rate Automatic Adjustment Buy $ with reserves … M … P … X Flex Rate … or Devalue Adjustable Peg Depreciation X ??? Im ??? Depends on foreign elasticity of demand for your exports Depends on your elasticity of demand for imports.
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Correcting a BoP Deficit Fixed Rate Automatic Adjustment • Buy $ with reserves … M … P … X Flex Rate … or Devalue Adjustable Peg • Depreciation X ??? Im ??? • Depends on foreign elasticity of demand for your exports • Depends on your elasticity of demand for imports
Marshall – Lerner Condition:The Impact of Devaluation on Balance of Trade Balance of Trade = P X – ER ( P* Im ) = 0 initially When ER = ($/£) [$ devalued] D{BoT} = P {d X} + ER P* {d Im} – d{ER} P* Im = Increased exports (in $) + Decreased imports (in £, translated to $ at ER) - Increased $ paid for initial imports … since ($/£) If X don’t rise much (low elasticity of demand for X) and/or Im don’t fall much (low elasticity of demand for Im) • Devaluation may worsen BoT
The J – Curve Responses to price changes take time • Elasticities are low in short – run • Elasticities are high in long – run In long – run, devaluation “improves” balance of trade • But in short – run, balance of trade may worsen J - Curve
Other Complications Devaluation increases costs of imports Higher costs of imported components Higher costs of exports Higher prices of exports • Less exports than otherwise • Things may get worse before they get better … if they get better at all
When transactions are invoiced in $s, as many are, ’preciation doesn’t matter. • Also, much of price to consumer of imported goods is domestic value added (distribution costs, promotion/sales costs, profits) which are unaffected by ’preciation.