Abstract:
This study is based on the assessment of tax revenue forecast in Tanzania using
heteroscedasticity modelling over the July 1998-June 2022 period, The study intends to
achieve the following objectives: together with omitting the reason of biases this study will
focus to improve the forecasted revenues in Tanzania, to examine the suitability of
heteroscedasticity modelling in tax revenue estimations and forecasting, to applying
heteroscedasticity modelling to forecast monthly tax revenue in Tanzania over the July 1998
to June 2022 period. The study will use the ARCH and the GARCH Models in
