Statistics South Africa Won't Revise Inflation Data (Update1)
By Nasreen Seria
July 16 (Bloomberg) -- Statistics South Africa said it won't revise this year's inflation data even if new product weightings in the consumer price index show that the inflation rate may have been overstated.
Revising the data would have implications for contracts, such as wage agreements, which are based on the official inflation data, Rashad Cassim, deputy director-general at agency, said in a phone interview from Pretoria today.
Investec Asset Management, South Africa's second-biggest private money manager, said yesterday the May inflation rate of 10.9 percent is overstated by 2.2 percentage points because the statistics office delayed reweighting product categories in the consumer price index by two years. The office today denied that it delayed the process, adding that updating the index had taken longer than in previous years because it was being cautious.
``We will not revise the inflation data,'' Cassim said. ``We didn't delay the reweighting of the index. We're paying the price for being thorough.''
Bonds surged today on speculation the inflation outlook is better than previously forecast. The yield on the R153 government bond, due 2010, fell 24 basis points, or 0.24 percentage point, to 11.07 percent.
Statistics South Africa said on July 1 it will reduce the weighting of food in the consumer price index, possibly cutting the inflation rate when the changes are applied to the data from January 2009.
Raising Rates
Economists, including Elize Kruger of Thebe Financial Services Ltd. in Johannesburg, said at the time that the adjustments may help to bring inflation back into the 3 percent to 6 percent target range sooner, easing pressure on the central bank to continue raising interest rates.
South Africa's Reserve Bank has increased its benchmark interest rate six times since June last year to curb inflation, which it forecasts will exceed the target until the third quarter of 2010.
At its peak, the inflation rate may be overestimated by as much as 3 percentage points, John Stopford, head of fixed income at Investec Asset Management, said by telephone from London today. Adjustments to the data will probably bring the inflation rate back into the middle of the target range in 2009, increasing the likelihood the central bank will cut interest rates next year.
`Out the Window'
``An August rate increase is out the window,'' Stopford said. ``The Reserve Bank will have to factor in'' the adjustments to the data. ``The scope to cut interest rates is enormous.''
In 2003, Stopford alerted the statistics office to a mistake it was making in measuring rental costs, resulting in an overstating of the inflation rate by 1.9 percentage points. The statistics office revised the data in May 2003 by that magnitude, prompting the central bank to cut interest rates the next month.
The statistics office hasn't made a mistake this time around and doesn't need to revise the data, Patrick Kelly, head of consumer price statistics, said by phone from Pretoria today.
``This is part of a planned process,'' Kelly said. ``The two situations are very different.''
Adjusting weights in the CPI is done every five years, though this time around it will take two additional years because the statistics office took a year to conduct the Income and Expenditure Survey on which the weightings are based, Kelly said. Previously the survey was conducted over a month, he added.
January Deadline
While the statistics office has already published the new weightings of products in the CPI, it will only apply it to the January 2009 inflation data in order to have comparisons with figures from a year ago, Kelly said.
Not all economists believe that the adjustments to the consumer price index will necessarily impact on monetary policy decisions.
Peter Attard Montalto of Lehman Brothers in London said that while the reweighting of the CPI will lower the inflation rate by about 1 percentage point in the first half of 2009, rising wages and ``second-round'' impacts of higher food and gasoline costs will keep the inflation rate above the target until 2011.
While the Reserve Bank will ``take the adjustments to the data into account,'' generalized price pressures in the economy will probably increase, meaning ``they have no choice but to hike interest rates, given their mandate,'' Montalto said in a phone interview today.