The properties of nominal interst rates as indicators of inflation exp
ectations are evaluated. Are they unbiased? How precise are they? To a
rrive at robust results, a range of different methods are applied on s
everal US and UK data sets. The results show that the interest rate le
vel is a reasonably good indicator of the level of inflation expectati
ons. However, changes in interest rates are poor indicators of changes
inflation expectations.