Suppose a person's life is divided into two main blocks, periods 1 and 2. Income in the two periods is equal to y1=100 and y2=100, and taxes are t1=0 t2=100 the comsumers initial weath is equal to 100 . The real interest rate is r = 100%.what is the highest feasible consumption in the furture periods
Lets first form the intertemporal budget constraint.
Period 1 :
c1 + s = y1 - t1 where c1 = consumption in period 1 , s = saving in period 1
=> s = y1 - c1
Period 2 :
c2 = Saving of period 1 + interest on that saving + Income in period 2 - tax in period 2
=> c2 = (y1 - c1) + r(y1 - c1) + y2 - t2
=> c2 = (1 + r)(y1 - c1) + y2 - t2 where r = 100% = 1
=> c2 = (1 + 1)(100 - c1) + 100 - 100
=> c2 = 2(100 - c1)
As, the highest feasible consumption in the future periods is that consumption where current period consumption(i.e.c1) is 0
Thus we have :
c2 = 2(100 - 0) = 200
Hence, The highest feasible consumption in the future periods is 200.
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