A Retail Inventory Management Key - Think of Inventory in Terms of Time

What’s the value of your inventory onseasonal items, a quick sales plan can be developed
hand?” This is one of the first questions that Iby taking the prior years sales for the same period
ask a prospective client during our initial conversation.and applying the sales trend factor. For larger
And they can almost always give me aretailers, more elaborate demand forecasting
straight-forward answer.software applications are frequently utilized. The point
Then I ask, “How many weeks of supply isof this discussion is not to review various forecasting
that?”methods, but to emphasize the importance of a well
Silence.thought out sales plan arrived at through careful
For many small retailers I speak with, thinking ofanalysis of past sales volume and patterns, and
inventory in terms weeks of supply is a newcurrent trends.
concept. They can easily talk about inventory inTo become a truly powerful inventory management
terms of quantity, units, cases or casepacks, as welltool, forward weeks of supply should be calculated
as how much inventory they need to build ancontinually by category or item. For categories of
effective display. They may have heard of terms likefashion merchandise, for instance, where specific
‘inventory turnover’ oritems are constantly changing as assortments,
‘open-to-buy’ without fully understandingforward weeks of supply should be calculated by
what they mean. They understand return oncategory. For staple replenishment items, forward
investment, but in managing the day to dayweeks of supply should be calculated by item. And
urgencies of their business they are much morejust as on hand inventories should be thought of in
focused on sales, believing that maximizing sales willterms of forward weeks of supply, purchase
lead to positive cash flow.quantities should also be evaluated for the number of
This perspective on cash flow is ironic becauseadditional weeks of supply that they represent. Every
almost every small retailer I speak with whopurchase order should be accompanied by the
can’t answer my weeks of supply question alsofollowing question; “How many weeks am I
experiences recurring cash flow problems. Let mebuying?”
explain why.Finally, after I’ve taken a moment to explain the
Thinking about inventory in terms of time is theconcept of weeks of supply to a prospective client,
essential starting point in effectively managingthey invariably ask what the weeks of supply should
inventory. Stated in simple terms, the goal ofbe for their business. And just like they started the
effective inventory management is to have on handconversation by not knowing what their weeks of
at any given time only enough inventory to supportsupply was, I end it by not being able to tell them
planned sales until the next delivery arrives, plus awhat their weeks of supply should be. Every retailer
safety stock to cover any short term sales spikehas a different optimal weeks of supply, due to their
and the possibility of a late vendor delivery. Thisunique mix of product offerings, which have unique
quantity can be stated at any point in time asselling characteristics, customer expectations, and
forward weeks of supply; that is, the number ofsupply chains. And for most retailers, especially those
weeks of planned sales going forward that thewhose product offerings are highly seasonal, the
current inventory represents. When thinking in termsoptimal weeks of supply may vary significantly
of weeks of supply, the focus is on maximizing thethroughout the year.
return on the inventory investment by linkingThe point is not necessarily to identify what the
inventory levels directly to planned sales.optimal weeks of supply is, but to continually
However, many small retailers instinctively focus onchallenge the current forward weeks of supply to
how much they might be able to sell if they had theidentify opportunities for eliminating unnecessary
stock on hand, rather than the amount of cash theyinventory and to free up cash for other urgent
are committing to inventory. Their focus is on havingneeds. As every retailer understands, there’s no
the stock to be able to capture the ‘lastsuch thing as standing still; if you’re not going
sale’. The problem with trying to capture thatforward, you can be almost certain that you’re
‘last sale’, however, is that it’s notgoing backwards.
possible to know exactly which sale is the ‘lastSmall retailers who think of their inventory in terms
sale’, resulting in inflated inventory levels. Andof weeks of supply almost always experience fewer
unless they can quantify the number of weeks ofmarkdowns and fewer build-ups of dead inventory,
supply they have on hand, and the number offaster inventory turnover, and healthier cash flows.
additional weeks of supply they are purchasing, theyWith healthier cash flows and a keen eye on weeks
have no way of projecting when they can expect toof supply, a small retailer will always have the ability
sell that inventory and convert it into cash.to be a true merchant, to make that advantageous
Clearly, a critical component of forward weeks ofpurchase, chase a key item, or capitalize on the
supply is planned sales. For small retailers oflatest emerging trend. And those are the true keys
non-seasonal items, these sales plans can be arrivedto generating consistent sales increase and
at quickly by taking the current weekly rate of saleprofitability.
and applying a factor for the current sales trend. For