Phone: (847) 510-6400 . Nobody makes paying rent online as painless as WilliamPaid. We empower renters to pay rent on their terms with convenient and flexible payment options that include paying rent with a credit card, debit card or bank account, or paying in cash at 45,000 locations nationwide. WilliamPaid is dedicated to helping renters in the U.S. build their credit history. When renters use WilliamPaid's convenient and flexible online payment options, they have the option to opt-in to have their monthly rent payments reported to Experian RentBureau. Experian currently includes rental payments on its credit reports which helps many responsible renters build credit history.