This paper discusses the implications of the validity of the condition
ing hypothesis for the maintained money demand equation for an inflati
on tax analysis. We also test the validity of the quantity-theoretical
inflation tax model for the post-1980 quarterly Turkish data by using
Johansen cointegration techniques. The results suggest that the tax r
ate (inflation) is weakly exogenous for the parameters of the long-run
money demand (tax base) equation. This result, consistent with a Keyn
esian endogenous seigniorage-exogenous inflation tax rate theory prior
, does not support the hypothesis that the Turkish inflation can be ex
plained by the conventional inflation tax revenue-maximizing motive al
one.