De or het subsidiekorting?

The correct Dutch article is:

de subsidiekorting

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

How to use subsidiekorting

the subsidiekortingde subsidiekorting
this subsidiekortingdeze subsidiekorting
that subsidiekortingdie subsidiekorting
our subsidiekortingonze subsidiekorting
your subsidiekortingjouw subsidiekorting
every subsidiekortingelke subsidiekorting
which subsidiekorting?welke subsidiekorting?
a big subsidiekorting / the big subsidiekortingeen grote subsidiekorting, de grote subsidiekorting