USDA’s Economic Research Service (ERS) purchased proprietary household and retail scanner data from market research firm IRI for use in economic research. In a series of studies, ERS and collaborators evaluated the statistical properties of the IRI scanner data for the years 2008 to 2012. This report compares the IRI Consumer Network household panel data to nationally representative Government survey data and describes implications for using the IRI data in analyses. The results show that expenditures in IRI are lower than those in the Consumer Expenditure Survey (CE) and the National Food Acquisition and Purchase Survey (FoodAPS) for all food categories across all years.