This document discusses the role of big data in performance budgeting. It outlines several key opportunities for agencies to leverage data in federal planning processes like strategic plans, annual performance plans and reports, and quarterly performance reviews. It also presents a model for maturing federal data quality practices from an ad hoc initial level to a strategic continuous improvement level. Recent examples of increased data use by federal, state and local governments are provided. The main challenges discussed are defining and measuring outcomes, creating trust and confidence in data, and integrating data sets while standardizing definitions.