operating income vs. non operating income
Over the last decade 
  or so, analysts have begun to focus more on companies' operating performances. 
  This tempts managers to show operating profit in the best possible light, and 
  they sometimes present it as more representative of the company's recurrent 
  performances.
  Regardless of what name it comes under, what the analyst is looking for is the 
  operating figure that is recurrent in nature. It is thus on this yardstick alone 
  that the analyst must look at income and costs for his assessment. 
  IAS definitions are: 
- operating income: any activity undertaken by a company in the course of ordinary business, as well as ancillary activities or activities that are a natural extension of, or that result from, these activities;
- non operating income: income and costs resulting from events or transactions that are clearly distinct from the company's ordinary activities and which are not expected to occur frequently or regularly, for example: asset expropriation, or earthquakes and other natural catastrophes.
The most commonly used approach consists of excluding 
  unusual items, as this is understood under IAS 8, from recurrent profit. While 
  in theory this reflects operating performances that are more standard and useful 
  for the analyst, non operating income in practice is often denatured by the 
  inclusion of recurrent items. Similarly, net financial income sometimes contains 
  items that should more accurately be written down under operations. 
  Below we present some items from annual reports recently published by European 
  groups.
Recurrent capital gains and losses
  The yearly disposal of a comparable amount of assets makes the management of 
  a company's assets an extension of its business and it is no longer to be considered 
  unusual. The results of these disposals should thus show up under net operating 
  income.
Redundancy payments, pensions, etc.
  As these are sums that the company pays or pledges to pay each year in one or 
  several sums to retiring employees, they obviously must be considered as recurrent 
  operating expenses, with the exception of the fraction resulting from the annual 
  revaluation of future costs, which comes under financing costs. 
Discounts 
  A discount is a price reduction granted when payment is made prior to the date 
  indicated in the terms of sale, without the buyer or seller having agreed beforehand 
  to early payment. While discounts are considered a financial item in the financial 
  statement, it seems more logical to put them under operating costs in the consolidated 
  accounts.
  To understand this point, let's look at how discounted cash flow valuation works. 
  Discounts neither create nor destroy value - they simply remunerate time. Early 
  payment allows a company to reduce its working capital and thus its debt level.
  The capital employed figure resulting from the valuation will be reduced by 
  a correspondingly lower debt level. In exchange, there is a reduction in operating 
  cash flow, leading to a reduction in the capital employed figure that is equivalent 
  to the discount, which is then offset by lower debt on the balance sheet.
Securitisation costs
  Securitisation costs, not counting arrangement fees, are equivalent to the difference 
  between the value of the receivables and the price at which they have been transferred. 
  For transfers with recourse (the most common case) the cost is equal to the 
  remuneration of the securitisation entity's capital during the time until collection. 
  A transfer reduces working capital and thus group debt. In the case of transfers 
  without recourse, in addition to time value, companies are charged for the risk 
  of default fir certain receivables. In exchange, they are dispensed from booking 
  provisions on receivables, which would be operating costs.
  The securitised receivables are either on the balance sheet and, in this case, 
  securitisation costs are booked under financing costs, or they are not on the 
  balance sheet (transfers without recourse) and they must then be booked under 
  operations.
The impact of currencies on normal operations
  This is the impact of fluctuating exchange rates on the value of operating assets 
  and liabilities resulting from the company's transactions. This occurs when 
  currencies have not been hedged or have been imperfectly hedged. As the impact 
  is directly linked to the company's daily operations, it should, in our view, 
  be reflected under its operating performance.
Cost of hedging operating assets and liabilities 
  
  These costs mainly include premiums for options used for hedging. For the same 
  reasons as before, we feel these are operating costs.
Pre-opening costs
  Putting these under exceptional costs allows the company to keep costs that 
  it wished to defer or had to defer, out of its operating results. While this 
  can help analysts who seek a normative structure (no income has yet been booked 
  to go with this cost), they should restate them under operating results.
Restructuring costs
  Many major groups book significant restructuring costs every year. While these 
  can be considered unusual at the level of a smaller company or division, they 
  are not unusual for major groups, which, given the diversity of their businesses, 
  restructure somewhere or another every year, in which case we would advise booking 
  them under operations.
Environmental costs
  Whether due to environmental protection codes, upgrades or fines, environment 
  costs are directly linked to the goods sold, despite the fact that they are 
  decided outside the company. They are therefore operating costs.
Let us take the example of Lafarge, which we can only 
  hope will come into general use. 
  Lafarge distinguishes between "recurrent operating profit" from "operating 
  profit", which includes non-recurrent income and costs. This approach has 
  the advantage of reconciling the normative view that is useful to analysts while 
  reflecting the company's true performances. However, it does require highly 
  detailed information in the appendix to understand the choices made.
