Sellers of consumer durables often provide financing to customers. Thi
s paper shows that when customers desire consumption smoothing and whe
n financial markets are imperfect, a seller can find it optimal to off
er a menu of deferred-payment plans. A monopolist seller price discrim
inates among customers with different intertemporal income profiles by
making such menu offers, and the interest rate on the seller credit c
an be significantly lower than the market borrowing rate. Seller finan
cing can be an equilibrium outcome in a game where sellers and banks w
ith market power choose payment plans and interest rates strategically
.