De or het pakketkorting?

The correct Dutch article is:

de pakketkorting

Rule Words ending in -ing: almost always de. See the rule

How to use pakketkorting

the pakketkortingde pakketkorting
this pakketkortingdeze pakketkorting
that pakketkortingdie pakketkorting
our pakketkortingonze pakketkorting
your pakketkortingjouw pakketkorting
every pakketkortingelke pakketkorting
which pakketkorting?welke pakketkorting?
a big pakketkorting / the big pakketkortingeen grote pakketkorting, de grote pakketkorting