Some argue that it would be more consistent to define net
operating working capital (NOWC), which is just NWC with notes payable left
out.
In our view, this issue runs much deeper. First, notes payable
are operating liabilities for many businesses. Any company, such as a car
dealer, that uses bank borrowing to floor plan inventory is using notes as
operating liabilities. In this case, the interest paid actually is an operating
cost. Very commonly, companies with seasonal sales use revolvers (a form of
notes payable) to crank up inventory. Same story. Making matters more
complicated, accounts payable is the single most important form of business
financing (not just operating financing) for small businesses. The distinction between
accounts payable and notes payable is pretty artificial in these cases. Both
are debts, just different creditors. However, long-term secured debt maturing
in the current year is clearly not an operating flow.
But wait, there is more.
Large corporations are increasingly holding huge amounts of
cash, far more than needed for operations. This excess cash is properly viewed
as a short-term investment portfolio. If we are trying to be very rigorous in
our definitions of operating assets and liabilities, then we have to somehow
separate out the operating cash (this is why we subtract cash in calculating
enterprise value, but that’s also wrong because some of the cash is needed for
operations).
So, in light of all this, we made the decision to follow
common business practice and call NWC the difference between current assets and
current liabilities. The cash flow to shareholders comes out correctly, EFN
comes out correctly, and in capital budgeting, none of these issues exist. As
you go out in the world and use what we have taught you, you may run into these
issues. Hopefully, for your company, you should have more information available
which will allow you to separate cash and notes payable into separate operating
and financing cash flows.