Reporting Periods: Why 13 Might be Lucky
We in the finance & accounting field can be creatures of habit. We get used to looking at things in terms of months. This is how we are schooled and how most companies set up their books. The problem is reporting on a monthly basis can make analyzing trends and making comparisons between periods difficult because we aren’t dealing with periods of equal length. So let’s consider the 4-week accounting period – 13 in each year.
I started giving this thought in the past few weeks. Having periods of equal length with four Mondays, four Tuesdays, four Wednesdays and so on can really be beneficial. Restaurant chains and retail stores will often use this reporting structure because most holidays will fall in the same period every single year making comparisons more meaningful. The benefits are even greater if your pay schedule is bi-weekly. Just think – you may not need to do payroll accruals!! There is also an advantage related to inventory as scheduling & planning counts becomes easier because they will always fall on the same day of the week.
Going to a 4-week reporting cycle isn’t without its challenges. First, for those of you who noticed, 13 periods X 4 weeks X 7 days per week = 364 days. We all know there are 365 days in a year. So your year end will change by 1 day each year. There are two ways to handle this:
- If you want to always have your periods start on a particular weekday, it would probably be wise to add one extra week to the fiscal year every 6 years to align it back with your “normal” fiscal year end. An example of this calendar can be seen here: 13-period calendar starting on Sunday
- If you aren’t overly particular about the day the period starts on, you could assign the first day of the fiscal year to always be an extra day in Period 1. You will also need to assign any leap days (Feb. 29) as an extra day in the period that Feb. 28th falls. In this scenario, the same dates will always be in the same periods. An example of this calendar can be seen here: 13-period calendar starting on Jan. 2
Here are some other things that might appear to be challenges:
- Bank statements are usually done on a monthly basis but this can usually be overcome by asking your bank to cut off your statement dates according to your schedule. And honestly, who isn’t using electronic downloads from their bank account anyway to do bank reconciliations? This objection to the 4-week reporting cycle is not a show stopper.
- Some expenses are billed on a monthly basis. Handling this one does require a little bit of work on the part of the accounting staff but when you consider the potential benefits in reporting, it might be worthwhile. Let’s take rent, for example. Let’s say your rent for the year is $120,000. When you receive your monthly bill for $10,000, code it to a prepaid account and expense $9,230.77 per period (1/13th of the yearly total). By the end of the year, the entire amount will have been expensed equally amongst the periods and the prepaid account balance will be zero.
- I know that some software packages like QuickBooks have their canned reports built on a monthly reporting schedule. In QuickBooks, this is easily taken care of by creating memorized reports with the appropriate date ranges corresponding to the period. There is probably a workaround in most systems if they don’t accommodate the 4-week reporting cycle.
Although using a 4-week reporting cycle may not be for every business, the above discussion will hopefully allow you to weigh the pros and cons and determine if it's right for your company.
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http://financecompass.wordpress.com.


Comments
Company: Tennison Associates, Inc
The points listed above are all valid. However, here are a few negatives:
1.One quarter each year will have an extra period.
2.Every 4 years there will be an extra week in one of the periods.
When providing analysis for !0Q's and 10K's this creates additional disclosure discussing the impact of the additional period and additonal week. Comparisons are also not consistent year over year once an additonal week is added (every four years).
Company: Infinity Sales Group LLC
William --
When I wrote this post, I was thinking more from an internal reporting perspective or from the perspective of a privately held company. Your thoughts about the impact on the 10Q and 10K is certainly worth considering when you are dealing with these reporting requirements. Thanks for reading and sharing your thoughts.
Company: Renaud Advisors
Laresa --
Your article is right on! I was first exposed to 13 period reporting when I started consulting for a restaurant chain. It is fantastic. It just lends itself so well to data analysis and comparable reporting, particularly when you look at trends in same-store-sales. Accounting is not an issue for things like rent because you simply amortize the actual payments from a prepaid account.
Company: Cosmi Software / Cosmi Finance LLC
If your analysis needs are more focused on comparability between quarters than between months, you can set your financial periods so that each quarter has a 5-week month followed by 2 4-week months. This eliminates the need for the 13th month that people find difficult to understand and still provides quarters of the same length. The drawback again is that once every 6 years you have to add a week to the year to make up the missing days. The benefits, though, are many. We have always set the week to be Sunday through Saturday. That means inventories are always taken on weekends, the month-end cutoff corresponds to the end of the payroll week, etc. You have a bit of accruing to do for expenses that are paid at the beginning of the month and bank cutoffs don't correspond unless you take William's advise above and have your vendors change the billing/statement dates so they always fall before the fiscal month-ends.
Company:
The consequences of adopting a 4,4,5 reporting pattern are more than covered. Why would an organization adopt this reporting pattern? Or better, what kind of organization would find it useful?
Manufacturing - where period comparability is extremely useful. Normal calendar months range from 18 to 23 working days (that's a guess) not including the effects of holidays. Meaning that a 23 day month is nearly 30% longer than the shortest. That really makes performance reporting/measurement difficult. Most businesses never make this choice - but in many manufacturing companies the usefulness outweighs the inconvenience to accountants. In the 70's and 80's when there was a lot of manufacturing in the US, it was not difficult to find large organizations using 4,4,5 - for internal reporting. Public companies always use 4,4,5 to true up the quarters for SEC reporting. It still exists if you look in the right industries. I personally have never seen thirteen 4 week periods.
Company: Infinity Sales Group LLC
I actually was part of any organization (manufacturing) that used 13 4-week periods and I know a colleague of mine that also belonged to an organization that used it. It's also prevalent in the restaurant industry and some retail. As another poster below indicated, I think some companies concentrate more on quarters than periods which is why you see 4,4,5 or 5,4,4 more. It just depends on what the focus of your business is -- quarters or periods.
Company: Ostrowsky Mentoring and Consulting
In the U.S. travel industry, all sales need to be reported weekly to a central reporting authority called the Airlines Reporting Corporation for the period covering Monday through Sunday. With that being said, 4-4-5 is the industry norm with every month ending on a Sunday.
Company: Family Christian Stores, Inc.
The National Retail Federation (NRF) provides a common 4-5-4 calendar that many retailers voluntarily follow. Comparability is aided by these practices. Nonetheless, there are key retail holidays that can shift between fiscal months, even under a 4-5-4 calendar (e.g. Thanksgiving occasionally shifts from fiscal November to fiscal December).
NRF Calendars:
http://www.nrf.com/modules.php?name=Pages&sp_id=391
FAQ’s and discussion of background:
http://www.nrf.com/modules.php?name=Pages&sp_id=392
Company: Buffco Production
Is it unthinkable that we go to a 13 month year, and simplify everything?
Company: Proformative, Inc.
Right. Just like we moved to the metric system ;).
Company: Buffco Production
That's a good point. It is hard to overcome the inertia of the status quo!
Company: Resources Global Professionals
I am all for uniform reporting periods and I constantly preach the use of a 4-4-5 or 4-5-4 accounting calendar to my clients in lieu of using a standard Gregorian calendar to run a business. Starting a month on a Sunday/Monday basis and finishing on a Friday/Saturday basis makes for a productive work period plus you get the comparability us CFOs & CEOs want. But going to 13 periods is a conversion nightmare. Try explaining 13 months in a year to your bankers or investors who only want to know how did you do LAST month!
Laresa, I would wait until 2012 when the Mayan calendar ends before implementing a 13 month year! If we are all still here come 12/21/12 then I think we'd all be open to trying something new.
Great discussion. :-)