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This article investigates the macroeconomic effects of fiscal policy in New Zealand using a structural vector autoregression ( SVAR) model. The model is the five-variable SVAR framework proposed by Perotti (2005), further augmented to allow for the possibility that taxes, spending and interest rates might respond to the level of the debt over time. We examine the dynamic responses of output, inflation and the interest rate to changes in government spending and revenues and analyse the contribution of shocks to New Zealand's business cycle for the period 1983:1-2010:2. We find that the effects of government expenditure shocks in New Zealand appear to be positive but small in the short run at the cost of higher interest rates and lower output in the medium to long run. The sign of the effects of tax policy changes are less clear-cut, but again the effects on GDP appear similarly modest. Past fiscal policy is analysed through a historical decomposition of the shocks in the model. This suggests that discretionary fiscal policy has had a generally pro-cyclical impact on GDP over the past 15 years, and a material impact on the real long-term interest rate. A fiscal expansion has a positive but limited impact on inflation.
