* Maintains guidance for 2017-18 year
* Says guiding for Primark in 2018-19 problematic
* Shares down over 20 pct so far this year (Adds finance director, analyst comments, detail, shares)
By James Davey
LONDON, Sept 10 (Reuters) - Uncertainty over Brexit and its impact on the pound is making it hard to predict the future profitability of Primark, the owner of the discount fashion chain warned on Monday.
Associated British Foods, which also owns major sugar, grocery, agriculture and ingredients businesses, kept its financial guidance for the year to Sept. 15, but said forecasting for the 2018-19 fiscal year was much tougher.
Shares in the group, majority owned by the family of Chief Executive George Weston, fell as much as 3.7 percent, taking losses for the year to over 20 percent.
“Of all the years that I’ve sat in this chair, this coming year is one of the most difficult to give guidance on because there is this uncertainty of the Brexit outcome,” finance director John Bason told Reuters.
“The exchange rate if we have a negotiated outcome or a hard Brexit would be quite different,” he said.
With Britain yet to secure an agreement to define its future relations with the European Union, officials have said an October deadline is expected to slip into November.
Primark, which accounts for about half of AB Foods’ revenue and profit, sources the majority of its goods in dollars from the Far East, making it exposed to exchange rate swings.
For Primark’s coming 2018-19 year, merchandise for autumn/winter has been secured at fixed exchange rates.
If spring/summer ranges are secured at current exchange rates, the group would expect Primark’s 2018-19 operating margin to be in line with 2017-18’s 11 percent.
“That ‘if’ has got that caveat,” said Bason, noting exchange rate volatility was likely given the intense Brexit negotiations in the next few months.
On Monday, AB Foods forecast “progress” in group adjusted operating profit and adjusted earnings per share (EPS) for 2017-18, saying strong profit performances from its Primark, grocery, agriculture and ingredients businesses would more than offset a weak outcome from its sugar operation.
Analysts are on average forecasting adjusted operating profit of 1.41 billion pounds ($1.82 billion) and adjusted earnings per share of 133.3 pence for 2017-18, Reuters data shows, up from 1.36 billion pounds and 127.1 pence in 2016-17.
AB Foods said it would take a currency translation hit of 20 million pounds.
It said Primark sales were expected to rise 5.5 percent at constant currency rates as increased selling space offset a 2 percent fall in like-for-like sales. Primark performed particularly well in Britain, with like-for-like sales seen up 1.5 percent.
The group has warned AB Sugar’s revenue and profit will be well down on last year due primarily to significantly lower EU prices affecting its UK and Spanish businesses.
Analysts at Royal Bank of Canada kept their “outperform” stance on AB Foods, noting trading comparisons soften in the first quarter of its new financial year.
“We expect Primark’s international growth story to improve later this year. AB Foods has a strong balance sheet and we think Primark remains a best in class discounter,” they said.
$1 = 0.7742 pounds Editing by Jason Neely and Mark Potter