Just like other static QR Codes, your QR Code will never expire. That is, unless you lose your PayPal email address. When you change your Paypal email address in the future, however, you must generate a new QR Code. If you want a QR Code that is editable - meaning you don’t have to generate a new QR Code when you want to change the information encoded in it - make your dynamic QR Code with the QR Cloud Pro Plan or Expert Plan.