Washington Payment Method Authorization (WPA) is a payment processing system developed by the State of Washington to allow payment with debit and credit cards. It is used for both online and in-person transactions. WPA is secure, fast, and reliable. There are two types of WPA: one-time authorization and recurring authorization. One-time authorization allows for a single payment transaction for items such as one-off purchases or services, while recurring authorization is used for subscription-based services or recurring payments. WPA is compliant with Payment Card Industry (PCI) Data Security Standards, and is designed to provide a secure payment experience for customers. It is also certified by the Payment Card Industry Security Standards Council (PCI SSC). WPA also supports multiple payment types, including Visa, MasterCard, American Express, Discover, and E-Check.