Why is box 15B less than the total of boxes 15C? Box 15B and 15C require information from different periods when filing electronically. Box 15B requires about one half a year’s earnings, and 15C requires about one full year. The exact number of periods you must use is d...
Block 15B, Total insurable earnings ... 17 Block 15C, Insurable earnings by pay period ... 19 Block 16, Reason or issuing this ROE ...