De or het urgentieregeling?

The correct Dutch article is:

de urgentieregeling

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

How to use urgentieregeling

the urgentieregelingde urgentieregeling
this urgentieregelingdeze urgentieregeling
that urgentieregelingdie urgentieregeling
our urgentieregelingonze urgentieregeling
your urgentieregelingjouw urgentieregeling
every urgentieregelingelke urgentieregeling
which urgentieregeling?welke urgentieregeling?
a big urgentieregeling / the big urgentieregelingeen grote urgentieregeling, de grote urgentieregeling