Abstract

http://ssrn.com/abstract=1554914
 


 



Predicting Government Tax Revenues and Analyzing Forecast Uncertainty


Adi Brender


Bank of Israel - Research Department

Guy Navon


Bank of Israel

February 18, 2010

Israel Economic Review, Vol. 7, No. 2, pp. 81-111, February 2010

Abstract:     
This study examines the sources of uncertainty in predicting government tax revenues in Israel. In the first stage, we estimate a model based on several real and financial macroeconomic variables and identify a significant, stable and highly accurate relation between these variables and tax receipts. Moreover, we find that, given these variables, current tax revenues do not improve the projection of revenues. In the second stage, we test the quality of the model's projections on the basis of available information at the time the budget is prepared; we find that the forecast error based is six times greater than the error based on ex-post projection. These results imply that the forecast error predominantly reflects inaccuracy in the prediction of the explanatory variables and not misidentification of the relations among the variables. In particular, we find that GDP projections tend to be overly pessimistic — especially when they are prepared at times of below-average growth. In the third stage, we ask whether limited versions of the model predict tax revenues better; we find that the removal of the financial variables and the indicator for new-dwelling sales does improve the projection. However, models that are even more limited — based only on lagged tax revenues and a GDP growth forecast — provide less-accurate projections, and the probability that they will lead to significant errors in the construction of the budget is greater than that of the broader models.

Number of Pages in PDF File: 31

Keywords: Tax Elasticity, Revenue Forecast, Forecast Error

JEL Classification: C52, C53, H29

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Date posted: February 19, 2010  

Suggested Citation

Brender, Adi and Navon, Guy, Predicting Government Tax Revenues and Analyzing Forecast Uncertainty (February 18, 2010). Israel Economic Review, Vol. 7, No. 2, pp. 81-111, February 2010. Available at SSRN: http://ssrn.com/abstract=1554914

Contact Information

Adi Brender (Contact Author)
Bank of Israel - Research Department ( email )
PO Box 780
Jerusalem 91007
Israel
+972 2 655 2618 (Phone)
+972 2 655 2657 (Fax)
Guy Navon
Bank of Israel ( email )
P.O. Box 780
Jerusalem, 91907
Israel
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