How old do I need to be to use Splitit? February 22, 2023 13:09 Updated You need to be at least 18 years of age and have a credit card with the full purchase amount available, in order to use Splitit. Click here for more information about how Splitit works. Related articles How does Splitit differ from other Buy Now, Pay Later providers? What happens to my credit score if I use Splitit? How much do I pay when I make my purchase and each month? Can I pay my plan in full early? What currency do I pay my installments in? Comments 0 comments Please sign in to leave a comment.