Despite the growth of mobile and tablet banking over the past few years, online banking continues to be widely used in the US, with almost three-quarters of US online adults using it compared with less than one-third who use mobile banking. To help digital banking teams improve their secure websites, Forrester used its Website Functionality Benchmark methodology to evaluate and rank the secure websites of the five largest retail banks in the US across more than 50 criteria. This report outlines our findings and the insights and online banking best practices we uncovered.