De or het tariefbepaling?

The correct Dutch article is:

de tariefbepaling

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

How to use tariefbepaling

the tariefbepalingde tariefbepaling
this tariefbepalingdeze tariefbepaling
that tariefbepalingdie tariefbepaling
our tariefbepalingonze tariefbepaling
your tariefbepalingjouw tariefbepaling
every tariefbepalingelke tariefbepaling
which tariefbepaling?welke tariefbepaling?
a big tariefbepaling / the big tariefbepalingeen grote tariefbepaling, de grote tariefbepaling