Government Expenditure and Economic Growth Nexus: Wagner’s law or Keynesian Hypothesis for Tanzania?
DOI:
https://doi.org/10.61538/ajer.v5i1.434Abstract
This study investigates the validity of Wagner’s law and Keynesian hypothesis of the longrun relationship between government expenditure and economic growth in Tanzania using annual time series data from 1978 to 2014. The data series were tested for stationarity using Phillips-Perron unit root test and the results revealed that they were all stationary and integrated of order one I(1). The Johansen test of cointegration revealed that there are cointegrating vectors in the system which indicates the existence of long-run equilibrium relationship among the variables. The Granger causality test was performed within vector error correction model and the results revealed strong support for both Wagner’s law and Keynesian hypothesis when government expenditure was taken at its aggregate level. At the disaggregated levels, the results depict that recurrent expenditure and development expenditure from foreign sources promote economic growth hence supporting the Keynesian hypothesis. Wagner’s law was only supported in one instance where causality runs from economic growth to development expenditure from domestic sources. These results highlight the need for policy makers to direct development expenditure from domestic sources to sectors that stimulate economic growth.References
Ahmad, M., (2014). Government Expenditure and Economic Growth: An Econometric Test for India. International Journal of Social Science and Humanities Research, 2(3), pp.79–88.
Akpan, U.F. & Abang, D.E., (2013). Does Government Spending Spur Economic Growth? Evidence from Nigeria. Journal of Economics and Sustainable Development, 4(9), 36– 52.
Bağdigen, M. & Çetintaş, H., (2004). Causality between Public Expenditure and Economic Growth: The Turkish Case. Journal of Economic and Social Research, 6(1), pp.53–72.
Cass, D., (1965). Optimum Growth in an Aggregative Model of Capital Accumulation: A Turnpike Theorem. The Review of Economic Studies, 32(3), pp.233–240.
Cheng, B.S. & Lai, T.W., (1997). Government Expenditures and Economic Growth in South Korea: A VAR Approach. Journal of Economic Development, 22(1), pp.11–24.
Chimobi, O.P., (2005). Government Expenditure and National income : A Causality Test for Nigeria . European Journal of Economic and Political Studies, 2(2), pp.1–11.
Chipaumire, G. et al., (2014). The Impact of Government Spending on Economic Growth: Case South Africa. Mediterranean Journal of Social Sciences, 5(1), pp.109–118.
Dogan, E. & Tang, T.C., (2006). Government Expenditure And National Income: Causality Tests For Five South East Asian Countries. International Business & Economics Research Journal, 5(10), pp.49–58.
Froyen, R.T. (2008). Microeconomics:Theories and Policies 6th Edition. Prentice Hall, Upper Saddle River.
Gujarati, D.N., 2004). Basic Econometrics 4th ed., Ney York: McGraw-Hill.
Gujarati, D.N. & Porter, D.C., 2009. Basic Econometrics 5th ed., New York: McGraw-Hill.
International Monetary Fund, 2016. World Economic Outlook: Too Slow for Too Long, Washington.
Kamasa, K. & Ofori-Abebrese, G., 2015. Wagner or Keynes for Ghana ? Government Expenditure and Economic Growth Dynamics . A VAR Approach. Journal of Reviews on Global Economics, 4, pp.177–183.
Kapunda, S.M. & Topera, J.S., 2013. Public Expenditure Composition and Economic Growth in Tanzania: Socio-economic Policy Implications. Asian-African Journal of Economics and Econometrics, 13(1), pp.61–70.
Keho, Y., 2015. Revisiting Wagner’s Law for Selected African Countries : A Frequency Domain Causality Analysis. Journal of Statistical and Econometric Methods, 4(4), pp.55–69.
Koopmans, T.C., 1965. The Concept of Optimal Economic Growth. Cowles Foundation Paper 238.
Kweka, J.P. & Morrissey, O., 2000. Government spending and economic growth in Tanzania, 1965-1996. CREDIT Research Paper No. 00/6
Loizides, J. & Vamvoukas, G., 2005. Government Expenditure and Economic Growth: Evidence From Trivariate Causality Testing. Journal of Applied Economics, VIII(1), pp.125–152.
Lütkepohl, H., 2005. New Introduction to Multiple Time Series Analysis, New York: Springer.
Masan, S.S., 2015. Testing Keynesian versus Wagner Hypothesis on the linkage between Government Spending and Economic Growth in Oman. In Proceedings of the Fourth
Moshi, H.P.B. & Kilindo, A.A.L., 1999. The impact of government policy on macroeconomic variables : A case study of private investment in Tanzania, Paper submitted to the AERC, Nairobi, Kenya, December.
Mutuku, C.M. & Kimani, D.K., 2012. Investigating Wagner ’ s Law-Cointegration and Causality Tests for Kenya. Current Research Journal of Economic Theory, 4(2), pp.43– 52.
Narayan, P., & Smyth, R. (2008). Energy consumption and real GDP in G7 countries: new evidence from panel cointegration with structural breaks. Energy Economics, 30, pp.2331–2341.
Odhiambo, N.M., 2013. Government Expenditure and Economic Growth in South Africa: An Empirical Investigation. In Proceedings of 5th Annual American Business Research Conference 6-7 June, Sheraton LaGuardia East Hotel.
Osoro, N.E., 1997. Public Spending, Taxation and Deficits, AERC Research Paper, no. 62
Oteng-Abayie, E.F., 2011. Government Expenditure and Economic Growth in Five ECOWAS Countries: A Panel Econometric Estimation. Journal of Economic Theory, 5(1), pp.11–14.
Ozughalu, M.U. & Ogwumike, O.F., 2013. Can Economic Growth , Foreign Direct Investment And Exports Provide The Desired Panacea To The Problem Of Unemployment In Nigeria? Journal of Economics and Sustainable Development., 4(1), pp.36–52.
Rehman, J. ur, Iqbal, A. & Siddiqi, M.W., 2010. Cointegration-Causality Analysis between Public Expenditures and Economic Growth in Pakistan. European Journal of Social Sciences, 13(4), pp.556–565.
Sevitenyi, L.N., 2012. Government Expenditure and Economic Growth in Nigeria: An Empirical Investigation (1961-2009). The Journal of Economic Analysis, III(I), pp.38– 51.
Solow, R.M., 1956. A Contribution to the Theory of Economic Growth. The Quarterly Journal of Economics, 70(1), pp.65–94.
Srinivasan, P., 2013. Causality between public expenditure and economic growth: The indian case. International Journal of Economics and Management, 7(2), pp.335–347.
Thabane, K. & Lebina, S., 2016. Economic Growth and Government Spending Nexus: Empirical Evidence from Lesotho. African Journal of Economic Review., IV(1), pp.86– 100.
URT. Various Issues. Economic Surveys (or Hali ya Uchumi wa Taifa). Dar es Salaam: Ministry of Finance and Economic Affairs, United Republic of Tanzania.
Zagler, M. & Durnecker, G., 2003. Fiscal Policy and Economic Growth. Journal of Economic Surveys, 17(3), pp.397–418.
