Sales growth was "encouraging with the start of an improving same-store sales trend that has continued into February," the company said. "Sales leverage has led to increased gross profit dollars, but not sufficient to cover inflationary and strategic investment costs in the half."
Warehouse will pay a first-half dividend of 13.5 cents, down from 15.5 cents a year earlier.
The company kept its guidance for the full-year for an adjusted net profit of $62 million to $66 million, down from $76 million in 2011. The net profit forecast was affirmed at $80 million.
"Trading conditions (are) expected to remain uncertain in the remainder of the financial year," it said.
Net debt rose to $198.4 million from $103.9 million in January 2011. That reduced its annualised interest cover to 11.4 times EBIT from 13.3 times a year earlier.
Sales at the Red Shed rose 3.4 per cent to $835.7 million while operating profit fell 16 per cent to $62 million. Warehouse Stationery lifted first-half sales by 2.1 per cent to $100 million and operating profit fell 15.5 per cent to $3.1 million.
The shares climbed 3.1 per cent to $2.65 in trading yesterday, and have shed 15 per cent this year.