An Etymological Dictionary of the German Language/Annotated/gelten

gelten, verb, ‘to be worth, pass current, prove effectual,’ from Middle High German gëlten, Old High German gëltan, strong verb, ‘to repay, pay, cost, be worth, requite, compensate’; compare Gothic us-, fra-gildan, ‘to requite’ (akin to Gothic gild and gilstr, neuter, ‘tax’), Old Icelandic gjalda (Old Swedish, also gialla, from Teutonic gelþan), ‘to pay,’ Anglo-Saxon gildan, English to yield, Dutch gelden, ‘to be worth, cost,’ Old Saxon geldan. The common Teutonic stem gelþ, the þ of which is proved by Old Swedish from pre-Teutonic ghel-t, points to the fact that Old Slovenian žlědą, ‘I pay, atone for,’ was borrowed. The primary meaning of the Teutonic cognates is ‘to make good, pay over something’; it seems to be specially applied to religious sacrifices; compare Anglo-Saxon gild, Old Saxon gëld, ‘sacrifice’ (akin to Greek τέλθος, ‘duty’?). See Geld, Gilde. — The particle gelt, which first occurs in early Modern High German, is properly the subj. present of the verb gelten.