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Railroad Retirement Board (RRB) BRI/COLA & Earmark File

Published by Social Security Administration | Social Security Administration | Catalog Last Checked: October 08, 2026 at 10:38 PM | Dataset Last Updated: October 08, 2026
Railroad Retirement Board (RRB) sends an "Earmark File" of all RRB annuitants each year prior to BRI/COLA. This file is passed through BACOM to earmark related MBR records. The BRI/COLA operation extracts certain MBR information earmarked for RRB involvement or for RRB jurisdiction for Medicare. This information is essential to computing the amount of railroad retirement annuities after a Social Security cost-of-living increase affecting railroad retirement beneficiaries covered by the retirement programs administered by the RRB.

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