摘要：Abstract : The purpose of this study was to empirically investigate the interactions between various taxes and GDP, and to detect whether taxes function as an automatic stabilizer in Turkey. Firstly, when using a time series unit-root test as proposed by Dickey-Fuller (1979), econometric findings revealed that taxes and level of {GDP} are not static. Secondly, upon employing cointegration designed by Johansen (1988), it was found that {GDP} and taxes are cointegrated. Thirdly, the Granger (1969) causality test showed that a uni-directional causality exists among taxes, and the causal relationship is between {GDP} to SCT, and from {VAT} and {CIT} to GDP. On the other hand, there was a bi-directional causality between {GDP} and PIT. Empirical findings showed that personal income tax is the most effective tax in stabilizing business cycle fluctuations. Corporate income tax is also important.
