Wal-Mart Stores Inc expects slightly stronger sales growth next year as it makes changes such as opening more smaller US stores and shutting 50 poorly performing stores in Brazil and China, executives said on Tuesday.

The world's largest retailer sees a "tough" and "unpredictable" economy around the world, Chief Executive Officer Mike Duke said, a week after the International Monetary Fund trimmed its outlook for global growth.

Wal-Mart expects its overall sales to rise to $475 billion to $480 billion this fiscal year, a gain of about 1.9 percent to 3 percent over last year's $466.11 billion. For fiscal 2015, which begins in February, it is targeting 3 percent to 5 percent growth, Chief Financial Officer Charles Holley said at the company's meeting with investors and analysts in Arkansas. The meeting was also webcast.

Positive economic signs such as a declining unemployment rate, along with Wal-Mart's efforts such as better merchandising plans, new stores and ecommerce plans, makes the company confident it can grow sales faster next year, Holley said.

Still, US customers remain under pressures from higher income taxes, gas and food prices, plus the government shutdown, and they are trying to stick to budgets.

Wal-Mart is not waiting for the holiday season to get aggressive on pricing. Walmart US, its largest business by far, is promoting low prices on everything from Kraft's Velveeta cheese and PepsiCo Inc's Doritos chips to Procter & Gamble Co's Pampers diapers and Bounty paper towels this month, while Sam's Club will have another discount booklet for members starting on Oct 30, as both chains try to boost sales early in the fourth quarter.

More than 1 million people have already signed up for holiday layaway, which allows Walmart US shoppers to put items on hold and pay for them over time. Four of the top five items on layaway are devices including Google Nexus tablets, HP's HP 2000 laptop, the Hisense Sero 7 tablet and Fuhu Inc's nabi 2 Kids' tablets, Holley told reporters.

Furlough impact

Walmart US feels pretty good about its profit but is not satisfied with its sales, Simon said.

Same-store sales at Walmart US unexpectedly fell 0.3 percent in the 13-week period that ended in late July. Same-store sales at the bottom 10 percent of its large US supercenters were down 7.5 percent in that period, he added.

Walmart US said it is testing using its supercenter stores as "cross docks" to supply nearby smaller stores, a move that could help it keep goods in stock and cut costs. The system is set to roll out in the first of three unnamed markets in March.

Using the back room of a supercenter as a "little mini warehouse" for daily deliveries to smaller stores would eliminate the need to send 53-foot trucks from distribution centers to smaller stores, Walmart US CEO Bill Simon said.