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What CPI inflation figures do and don’t tell us

27 February 2013 | Economy | General | Fiona Zerbst

Last month, CPI inflation rose by a modest 0.3% from December, with the annual rate of inflation easing to 5.4% from 5.7% in December. This is below market expectations and within inflation targeting range. Although some reports have suggested that the ne

The new re-based and re-weighted CPI index was introduced by Statistics South Africa in order to update the calculation to better reflect the way in which South Africans spend their money on. Does this mean the previous basket was in some sense inadequate?

Not so, says Jeff Gable, managing principal, head of Africa non-equity research at Absa Capital. “The previous methodology was not flawed. It reflects expenditure at a certain point in time. The previous basket was calculated based on the expenditure patterns in 2005/6. This was towards the end of a huge economic boom – banks were lending, the housing market was robust, people were buying big-ticket consumer durables,” explains Gable. “Spending patterns have changed since then. There is no ‘perfect’ basket but it’s not correct to say that the previous basket was an inappropriate measure, it’s just that this new basket, which uses expenditure patterns from 2011 is more relevant today.”

Inflation risk still high

What the latest statistics tell us is that inflation risk is still high. Food and non-alcoholic beverages were among the main contributors to inflation last month. Although global food inflation eased a little, we can still expect the annual rate of increase to drift higher here, to around 10% in July and August, largely due to base effects, says Stanlib economist Kevin Lings.

Although petrol inflation fell by 1.2% last month, reflecting the 15c/l decrease in the fuel price at the beginning of January, petrol has gone up by 41c/l this month and there’s a massive 86c/l average daily under-recovery on the fuel price (the result of a higher oil price). We can probably see an increase in March, which will add meaningfully to the March inflation reading, says Lings.

Core inflation (CPI less food, fuel and electricity) was down to 4.7% from 4.9% in December and service inflation eased to 5.9% from 6.0% in December, suggesting that CPI is well within inflation targeting. Risks to inflation remain on the upside, thanks to currency, petrol, electricity and wage issues. But Lings believes the Reserve Bank will leave the interest-rate unchanged, since the upward bias isn’t sufficient to argue for a hike.

Editor’s thoughts:
Statistics South Africa has come in for some criticism over the relevance of its CPI basket. It ignores the effect that monetary policy has on asset prices – what about asset price inflation? ETM Analytics’ Chris Becker says that unemployed and low-income earners are experiencing higher consumer price inflation than the official rate, which lowers their real income; in addition, asset price inflationas measured by the JSE All Share Index is running at 16% year on year, which means that if they don’t own assets their ability to ever own and accumulate them diminishes. They are therefore not protected against Rand weaknessand the effects of price inflation. While the well-off can generally protect themselves against the effects of supply-side inflation, low-income earners cannot do so, and the Reserve Bank cannot address this with inflation targeting.In fact, Becker argues, inflation targeting is the root cause of growing income inequality.Gable says high administered prices – those prices determined by sellers – remain a huge burden on the local economy. While electricity and petrol prices exert upward pressure on inflation, consumers must bear an ongoing heavy burden. Let us have your thoughts below or e-mail [email protected].

Comments

Added by Anonymous, 06 Mar 2013
Mr Patrick Kelly: I'm sure you own property - correct? This is nicely growing at 16% p.a. year-on-year while your bond repayment is nicely "managed" with a stable 8.5%, curtecy of the reserve bank - good for you. The rest of us have to suffer 10% rental increases every year, for most of us, rent is already 50-60% of our salaries - which became 3.5% less valueble due to PAYE increases... Add to that the crazy Escom hikes, the exuberant cost of food and other basic daily items. We are saying, CPI doesn't make sence!!! Adjusting the basket - sure, but it definately didn't work...
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Added by Patrick Kelly, 04 Mar 2013
Patrick Kelly, Executive Manager Price and Employment Statistics Statistics South Africa, responds as follows: "Mr Berner seems to believe that all economic statistics and the consumer price index in particular are a conspiracy by the state to achieve its own narrow interests. The methods used to compile the South African CPI are in line with standard international practices as regulated by the International Labour Organisation. These methods are strongly rooted in economic and statistical principles which date back to the 18th century. However, new methods are continually being developed by CPI experts from round the world (including ourselves) who meet annually to share experiences. Most statistics offices (including Statistics South Africa) are protected from government interference by an Act of Parliament. The primary reason why the basket is reweighted periodically is because it must be based on the total expenditure of consumers. I am sure that Mr Berner will agree that households change their spending patterns from time to time in response to new product offerings, changes in technology, or changes in the household income (buying more or less luxury items or durables for example). So in order to remain relevant to consumer expenditure, the basket is changed from time to time. In fact index theory says that if you do not do this then you will start to get an upward bias in the inflation rate. When the basket and weights are updated, there is no revision to the historical indices or rates of change. This is to ensure that the extensive set of financial arrangements (grant increases, wage setting, contract escalations, interest rates etc) which are based on the CPI are not brought into question."
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Added by Peter Berner, 27 Feb 2013
Oh please, are you blind. The reweighting of items in the basket has everything to do with inflation being understated. In fact, lets call it what it is, the inflation basket is a lie and the reweightings are designed to hide inflation, to pretend it doesn't exist. Items that are rising in price, they make smaller or reduce the proportion in the basket to everything else, in order to capture smaller price increases and items that are falling in price, they make larger in the basket in order to capture larger price declines. It's interference with the "independance" of the Reserve Bank. That way, government can keep it's employees salaries lower and it's debts repayments back to bond holders lower too. It affects our salaries, our pensions, our life insurance policies, our standard of living. Each year, our standard of living will get worse as employers give wage increases under the real inflation, while cost of living increases. Wake-up! The basket is supposed to measure the price increase on goods every year. It's that simple. Even basic economic textbooks say you can't re-weight items in the inflation basket, because then they don't know what you'd be measuring, but it wouldn't be inflation. The reweighting of the basket is a government parlour trick used by finance ministers around the world to hide their money printing and to keep interest rates low.
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