Affirm is a financial technology company that allows consumers to purchase items and pay for them over time through installment loans. When you select Affirm at checkout, you provide personal details, and Affirm makes an instant loan approval decision. The loan terms are presented upfront, with no hidden fees, ranging from 3 to 36 months. You accept the terms, proceed with your purchase, and repay Affirm in monthly installments. While a simple and transparent service, it's essential to consider your ability to meet the payment terms before use.