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Resource | Research and Data | Assessing/Improving Operations Promising Approaches and Challenges for SNAP State Agencies in Implementing Corrective Action Plans

This study reviewed corrective action plans (CAPs) for payment error rate, case and procedural error rate and quality control completion rate from eight states and describes the approaches used to develop, implement, and monitor CAPs. The study also identified challenges and promising practices and provided recommendations for improving states' ability to conduct corrective action activities.

12/05/2023
Resource | Research and Data | Impacts/Evaluations Evaluation of Technology Modernization for SNAP Benefit Redemption Through Online Transactions

​This study evaluated the implications of online SNAP benefit redemption on program integrity. In addition, the study gathered basic information about online benefit redemption, including the use in urban and rural settings.

09/26/2023
Resource | Research and Data | Assessing/Improving Operations Summer Food Service Program Integrity Study

The Summer Food Service Program Integrity Study was designed to improve understanding of how state agencies provide oversight of the SFSP. To address the research objectives, the study examined such areas as sponsor and site selection, training and technical assistance, meal counting and claiming, and reviews. The findings, based on data collected in 2021, also offered some preliminary responses about the impact of the COVID-19 pandemic on SFSP operations.

08/30/2023
Resource | Research and Data | Food/Nutrient Analysis Indicators of Diet Quality, Nutrition, and Health for Americans by Program Participation Status, 2011–2016: USDA NSLP Report

This study used 2011–2016 National Health and Nutrition Examination Survey (NHANES) data to examine the relationship between estimated program participation, diet quality, indicators of nutrition and health, food consumption patterns, and nutrient intakes. 

06/08/2022
Resource | Research and Data | Assessing/Improving Operations Assessment of States' Use of Computer Matching Protocols in SNAP

As required by federal law, state SNAP agencies verify financial and non-financial information by matching SNAP applicant and participant information to various national and state data sources to ensure they meet the program’s eligibility criteria. Data matching is an important tool for ensuring program integrity and benefit accuracy. However,  information on states’ data matching practices and protocols is limited. This study was undertaken to address this knowledge gap.

08/11/2020
Resource | Research and Data | Payment Accuracy and Program Integrity The Extent of Trafficking in the SNAP: 2012–2014

Trafficking of Supplemental Nutrition Assistance Program benefits occurs when SNAP recipients sell their benefits for cash to food retailers, often at a discount. Although trafficking does not increase costs to the federal government, it is a diversion of program benefits from their intended purpose of helping low-income families access a nutritious diet. This report, the latest in a series of periodic analyses, provides estimates of the extent of trafficking during the period 2012 through 2014.

09/22/2017
Resource | Research and Data | Assessing/Improving Operations CACFP Assessment of Sponsor Tiering Determinations - 2015

This report provides the 2015 national estimate of incorrect payments for the meal reimbursements. The assessment calculates both overpayments and underpayments for FDCHs that earn either Tier 1 (higher) or Tier II (lower) reimbursements depending on the location and circumstances of the child care provider or the participating children.

06/08/2017
Resource | Research and Data | Assessing/Improving Operations WIC Vendor Peer Group Study

The purpose of this study is to evaluate the effectiveness of state agencies current peer group systems, and to provide guidance to state agencies on how to evaluate and update their systems. Specifically, it uses empirical analysis to identify one or more effective models for establishing vendor peer groups that could apply to most state agencies.

05/31/2017
Resource | Research and Data | Food/Nutrient Analysis Review of WIC Food Packages: Improving Balance and Choice

The National Academies of Sciences, Engineering, and Medicine  convened an expert committee to review and assess the nutritional status and food and nutritional needs of the WIC-eligible population and provide recommendations based on its review and grounded in the most recently available science. The committee produced three reports as part of this task. 

01/05/2017
Resource | Research and Data | Assessing/Improving Operations Second Access, Participation, Eligibility, and Certification Study (APEC II): Estimating and Validating Statistical Models for Updating Estimates of Improper Payments in NSLP and SBP

Statistical models were designed to estimate national improper payments due to certification error on an annual basis using district-level data. This enables FNS to update its estimates of national improper payment rates for the NSLP and SBP in future years without having to conduct full rounds of primary data collection.

11/29/2016
Page updated: September 16, 2025