Testing the Stability of Demand for Money in Tonga

The aim of this study is to investigate if there is a stable demand for money for Tonga. Our empirical results based on the alternative time series approaches of LSE-Hendry's General to Specific (GETS) and Johansen's Maximum Likelihood (JML) show that there is a unique cointegrated and stable long run relationship between real narrow money, real income and nominal rate of interest. We found that the demand for money function for Tonga is stable and therefore targeting money supply by National Reserve Bank of Tonga is appropriate. We obtained consistent results with both methods and they indicate that income elasticity is unity and the interest rate elasticity is well- determined and significant.