The Optimal Public Debt Ceiling in Taiwan: A Simulation Approach

This study conducts simulation analyses to find the optimal debt ceiling of Taiwan, while factoring in welfare maximization under a dynamic stochastic general equilibrium framework. The simulation is based on Taiwan's 2001 to 2011 economic data and shows that welfare is maximized at a debt/GDP ratio of 0.2, increases in the debt/GDP ratio leads to increases in both tax and interest rates and decreases in the consumption ratio and working hours. The study results indicate that the optimal debt ceiling of Taiwan is 20% of GDP, where if the debt/GDP ratio is greater than 40%, the welfare will be negative and result in welfare loss.

Authors:

• Ho Yuan-Hong
• Hunag Chiung-Ju

Keywords:

• Debt sustainability
• optimal debt ceiling
• dynamic stochastic general equilibrium
• welfare maximization.

References:

[1] J. D. Hamilton and M. A. Flavin, “On the limitations of government
borrowing: a framework for empirical testing,” The American Economic
Review, vol. 76, no. 4, pp. 808-819, 1986.
[2] B. Trehan and C. E. Walsh (1991), “Testing intertemporal budget
constraints: theory and application to U.S. federal budget and current
account deficits,” Journal of Money, Credit and Banking, vol. 23, pp.
206-223, 1991.
[3] C. E. Quintos, “Sustainability of the deficit process with structural shifts,”
Journal of Business and Economic Statistics, vo. 13, no. 4, pp.409-417.
[4] L. R. Lima, W. P. Gaglianone, and R. M. B. Sampaio, “Debt ceiling and
fiscal sustainability in Brazil: a quantile autoregression approach,”
Journal of Development Economic, vol. 86, pp. 313-335, 2008.
[5] H. Bohn, “Are stationary and cointegration are really necessary for the
intertemporal budget constraint,” Journal of Monetary Economics, vol.
54, pp. 1837-1847, 2007.
[6] S. Ahmed and J. H. Rogers, “Government budget deficits and trade
deficit: are present value constraints sustained in long-term data?”
Journal of Monetary Economics, vol. 36, pp. 351-374, 1995.
[7] J. E. Payne , H. Mohammadi , and M. Cak , “Turkish budget deficit
sustainability and the revenue-expenditure nexus ,” Applied Economics,
vol. 40, no. 7, pp. 823-830, 2008.
[8] L. Sarno, “The behavior of US public debt: a nonlinear perspective,”
Economics Letters, vol. 74, no. 1, pp. 119-125, 2001.
[9] G. Chortareas, G. Kapetanios, and M. Uctum, “A nonlinear approach to
public finance sustainability in Latin America,” Working Paper, no. 486,
University of London Queen Mary Economics, 2003.
[10] P. Arestis, A. Cipollini, and B. Fattouh, “Threshold effects in the U.S.
budget deficit” Economic Inquiry, vol. 42, no. 2, pp. 214-222, 2004.
[11] C.-J. Huang and Y.-H. Ho, “Fiscal deficit sustainability in China:
nonlinear evidence”, in Business Strategies and Technological
Innovations for Sustainable Development: Creating Global Prosperity
for Humanity, N. Delener et al., Eds. Global Business and Technology
Association, pp. 520-527, 2009.
[12] D. A. Dickey and W. A. Fuller, “Likelihood ratio statistics for
autoregressive time series with a unit root”, Econometrica, vol. 49, pp.
1057-72, 1981.
[13] C. Checherita-Westphal and P Rother , “The Impact of High and Growing
Government Debt on Economic Growth: An Empirical Investigation for
The Euro Area,” European Central Bank Working Papers, no 1237, 2010.
[14] A. Baum, C. Checherita-Westphal, and P. Rother, “Debt and growth:
new evidence for the euro area,” Journal of International Money and
Finance, 32, 809-821, 2012.
[15] R. Aiyagari, and E. McGrattan, “The Optimum Quantity of Debt,”
Journal of Monetary Economics, 42, 447-469. 1998.
[16] Weh-Sol Moon, “Korea's Optimal Public Debt Ratio”, Magazine article
from SERI Quarterly, 3, no4, 30-39, 2010.
[17] S. Rohrs, and C. Winter, “Wealth Inequality and The Optimal Level of
Government Debt,” University of Zurich Department of Economics
Working Paper, no 51, 2012.
[18] R. Aiyagari, “Uninsured idiosyncratic risk and aggregate saving,”
Quarterly Journal of Economics, 109, 659-684, 1994.