Change Round-Up is a for-profit company that provides a virtual "spare change" donation service at checkout to generate donations for charity while building customer loyalty and sales for merchants. The service asks customers if they want to round up their purchase total and donate the change to listed charities. Charities pay Change Round-Up 10-14% of donations as a fee for the service, which is free for merchants. Initial results show over 23% donation rates on average, with some women's sites seeing 65-70% of customers donating.