CMS is pleased to announce that Medicaid T-MSIS Analytic Files (TAFs) for service years 2022 and 2023 are now available. The TAF research files* contain data on Medicaid and Children's Health Insurance Program (CHIP) beneficiary demographics, program enrollment, service use, and payments. They are designed to meet the diverse research needs of the Medicaid and CHIP data user community.
Please note: CMS is releasing TAF data on a regular, annual schedule, in December of each year. ResDAC will no longer announce new data releases or updates to the data through its news feed.
Updated 2023 TAF release:
Today's 2023 TAF research file release contains fully mature data, which includes at least 12 months of runout for each service month. Please note, CMS is continuing to work with states to address data quality issues, and we may update the 2023 TAF research files again.
2024 Preliminary TAF release:
The 2024 preliminary TAFs were created based on services submitted to CMS through May 31, 2025, and, have at least 4 months of runout for each service month. Users should be aware that the data is not fully mature when planning their analytics. Once the TAF data for 2024 are fully mature and include at least 12 months of runout for each month, CMS will release an updated version of the RIFs.
TAF data are now available for 2014 to 2024. To find more information on the data, including record layouts, visit this page. To learn how to request TAF data, start here or contact us at [email protected] or 888-973-7322.