Mismatched census records typically indicate that your plan converted to Betterment mid-year. If you converted mid-year, please be sure to upload the full year’s worth of census information. If you did not convert plans mid-year, the mismatch could be the result of Betterment receiving incomplete payroll records or inconsistent payroll records from earlier in the year, where the records we received did not match the actual payroll information. It certainly happens, but what matters most is that we use the correct information for compliance testing purposes. We will use the records you upload now to make any corrections that are required.