Fiscal Multipliers under an Interest Rate Peg of Deterministic versus Stochastic Duration
This paper revisits the size of the fiscal multiplier. The experiment is a fiscal expansion under the assumption of a pegged nominal rate of interest. We demonstrate that a quantitatively important issue is the articulation of the exit from the policy experiment. If the monetary‐fiscal expansion is stochastic with a mean duration of T periods, the fiscal multiplier can be unboundedly large. However, if the monetary‐fiscal expansion is for a fixed T periods, the multiplier is much smaller. Our explanation rests on a Jensen's inequality type argument: the deterministic multiplier is convex in duration, and the stochastic multiplier is a weighted average of the deterministic multipliers. The quantitative difference in the two multipliers also arises in a model with capital, and in the baseline nonlinear model. However, the differences between the two are less pronounced in the nonlinear models. The errors from a linear approximation are much larger for the stochastic exit model then for the deterministic exit model.
Year of publication: |
2014
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Authors: | CARLSTROM, CHARLES T. ; FUERST, TIMOTHY S. ; PAUSTIAN, MATTHIAS |
Published in: |
Journal of Money, Credit and Banking. - Blackwell Publishing. - Vol. 46.2014, 6, p. 1293-1312
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Publisher: |
Blackwell Publishing |
Saved in:
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