less successful as they observed that indexation breeds inflation inertia (a reduction in the government and the central bank's effort in fighting inflation leading to inflation rate remaining higher than targeted). This perspective is supported by Bonomo and Garcia (1994). The economists diverging opinions on the merit of indexation often depend on what data they looked at. A given country over a specific time series may have been successful conducting indexation. While another country at another time may have been less successful. Some economists believe there are appropriate times for indexation (when inflation is really high) and times for deindexation (when inflation has moderated after indexation, but remains still too high vs the central bank's inflation target). In recent years Brazil, Chile, Israel, and Mexico have implemented successful inflation fighting campaigns by implementing the deindexation of wages (Lefort and Schmidt-Hebbel, 2002). Debt The indexation of government debt to inflation is related to transferring the inflation risk from depositors to the government in an attempt to reduce inflation. Some governments have ultimately subjected their short-term debt instruments to deindexation so their central bank could regain control of short-term interest rates from a monetary policy standpoint and be in a better position to fight inflation. Another objective of indexation, for certain governments with already low inflation rate, is to reduce their borrowing cost by paying lower interest rates to depositors in exchange for assuming inflation risk. Both the UK and the US have issued inflation indexed government bonds to reduce their borrowing costs. When governments such as the UK and the US issue both inflation indexed bonds and regular nominal bonds, it gives them precise information on inflation expectation by observing the difference in yields between the two types of bonds. Robert Shiller has done extensive research on all mentioned aspects of government bond indexation. Tax rate The indexation of tax rate is to avoid an increase in effective and marginal tax rates due to inflation pushing taxpayers taxable income into higher tax brackets even though their pre tax purchasing power has not changed. Tax codes of various countries can be very complicated. As a result, certain types of taxes may be partially or entirely subject to deindexation even though the main tax rate structure is not. This is the case in the US where the standard tax rate is indexed to inflation. But, its parallel Alternative Minimum Tax (AMT) code is