What is Splitit? <br> Splitit is a payment solution enabling customers to pay for purchases with an existing Visa or MasterCard credit card by splitting the cost into interest-free monthly payments.</p> <p>b)  . How does Splitit work?<br> Customers who choose Splitit to pay, understand and agree that Splitit requests authorization from their credit card company, reserving the total purchase amount from their available line of credit.