Why would you pick 4-4-5 over 5-4-4 or over 4-5-4?

My old company was 5-4-4 with 5-4-5 in the 5th year.  My new company is 4-4-5 with 4-5-4 in the fourth quarter (4-5-5 in 5th year).  In both cases the answer was Finance was convinced long ago by someone (mostly likely the lawyer/audit firm) working with them when they incorporated.  No logic behind either other than just two different thoughts on how to do it in the Accounting community.

The big reason to do is this to normalize costs over the months.  Much easier to analyze consistent # of days across months than 31-28-31-30-31-30-31-31....  Accountants like that better.  It also helps with closing the books as you set the date that is always month-end (ie Friday) and it does not change each period.

Clarke