De or het vermogensbelasting?

The correct Dutch article is:

de vermogensbelasting

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

How to use vermogensbelasting

the vermogensbelastingde vermogensbelasting
this vermogensbelastingdeze vermogensbelasting
that vermogensbelastingdie vermogensbelasting
our vermogensbelastingonze vermogensbelasting
your vermogensbelastingjouw vermogensbelasting
every vermogensbelastingelke vermogensbelasting
which vermogensbelasting?welke vermogensbelasting?
a big vermogensbelasting / the big vermogensbelastingeen grote vermogensbelasting, de grote vermogensbelasting