A cycle code is an 8 digit code found on your account transcripts. The cycle code indicates the day your account posted to the IRS Master File. This date indicates the 4 digits of the current cycle year, two digit IRS cycle week, and two digit processing day of the week.
Cycle Code Breakdown
Example: 20180903 = (2018 – Cycle Year) (09 – Cycle Week) (03 – Cycle Day) = Tuesday, February 27, 2018
Here is an example of cycle code 20180903 on the 2018 IRS Posting Cycles
20180903 = (201809 – Cycle)(03 = Tuesday) = Tuesday, February 27, 2018