De or het loonaangifte?

The correct Dutch article is:

de loonaangifte

Rule Words ending in -te: usually de. See the rule

How to use loonaangifte

the loonaangiftede loonaangifte
this loonaangiftedeze loonaangifte
that loonaangiftedie loonaangifte
our loonaangifteonze loonaangifte
your loonaangiftejouw loonaangifte
every loonaangifteelke loonaangifte
which loonaangifte?welke loonaangifte?
a big loonaangifte / the big loonaangifteeen grote loonaangifte, de grote loonaangifte