Where does “geld” come from?

geld (Old Dutch) comes from Proto-Germanic geldą, from Proto-Indo-European gʰeldʰ- — to repay, reward; to pay; to pay for, repay.

Ancestry of “geld”, step by step

Step	Language	Word	Meaning
1	Proto-Germanic	geldą	That which is paid out; reward, gift, money
2	Proto-Indo-European	gʰeldʰ-	to repay, reward; to pay; to pay for, repay

geld — Etymology, Origin & Word History | Etymology Explorer