dependent on vs dependant upon

dependent on and dependant upon both are adjectives.

Word	Noun	Adjective	Verb	Adverb
dependent on	No	Yes	No	No
dependant upon	No	Yes	No	No

As adjectives, dependent on and dependant upon are synonyms defined as:

dependent on and dependant upon: being determined by conditions or circumstances that follow

Other synonyms of dependent on include contingent, contingent on, contingent upon, dependant on, dependent upon, depending on.

dependent on (adjective)	dependant upon (adjective)
being determined by conditions or circumstances that follow	being determined by conditions or circumstances that follow