The TPDP IMRF's Tax-deferred Payroll Deduction Program whereby a member purchases past service credit through tax-deferred payroll deduction. contributions withheld will appear on the member’s annual IMRF Member Statement of Account Each year IMRF mails to all members a Member Statement of Account. This statement provides an annual report of a member's salary, member contributions, service credit earned, and an estimate of IMRF benefit payments..