IRS Business Master Files

IRS Business Master Files use the following naming convention:[2 digit year of release][2 digit month of release].csv


bmf.bm1608.csv refers to the Business Master File for August, 2016. This corresponds to the data dictionary entry for "BMF 08/2016".


All files are presented strictly as is. NCCS is not providing technical assistance or customized data extracts at this time.