De or het funding?

The correct Dutch article is:

de funding

Rule Words ending in -ing: almost always de. See the rule
Meaning (Dutch) de Engelse term voor financiering, het bijeenbrengen of verstrekken van geld voor een specifiek doel, project of organisatie.

How to use funding

the fundingde funding
this fundingdeze funding
that fundingdie funding
our fundingonze funding
your fundingjouw funding
every fundingelke funding
which funding?welke funding?
a big funding / the big fundingeen grote funding, de grote funding

Dutch words ending in funding

crowdfunding | clubfunding

In compound words, the last part decides the article. See the rule

Meaning, plural, diminutive, pronunciation and translations: WikiWoordenboek (Dutch Wiktionary) (CC BY-SA 4.0). Example sentences: Tatoeba (CC BY 2.0 FR).