This article discusses export and import
forecasting in Indonesia by using the Classical Additive,
Classical Multiplicative, Holt-Winter Additive, and HoltWinter Multiplicative methods. The data used was data
on exports and imports in Indonesia in 2014-2020.Export
and import data were monthly time-series data. In this
research, first, determined the time-series model and the
error of each method. The error could be seen as the best
method to proceed to forecast. So, the results of this
research were forecasting by using the Holt-Winter
Additive method for exports and forecasting by using the
Holt-Winter Multiplicative method for imports.
Keywords : Export, Import, Classical Additive method, Classical Multiplicative, Holt-Additive ,and Holt-Winter Multiplicative.