America likely marked its first $400 billion month for retail sales in December.
Steady sales gains have fueled a 20 percent surge from the low during the recession. Monthly sales are even 6 percent above their pre-recession high.
A further increase in December would confirm evidence that the economy was strengthening as 2011 ended.
Economists predict retail sales edged up 0.3 percent last month, according to a survey by FactSet. The Commerce Department will release the report at 8:30 a.m. Eastern time Thursday.
One caveat: Many retailers said they had to offer steep discounts in December to attract holiday shoppers.
The government's retail sales report is its first look each month at consumer spending, which accounts for roughly 70 percent of economic activity. A healthy report typically signals a stronger economy.
Compared with the same time last year, retail sales have risen 6.7 percent.
This week, the Federal Reserve issued a report saying the final six weeks of 2011 were among the economy's best last year. The report pointed to higher holiday and auto sales, along with increased travel.
The job market has brightened, too. Employers added 200,000 jobs in December. And the unemployment rate fell to 8.5 percent, the lowest in nearly three years.
Many analysts predict that economic growth rose to an annual rate of roughly 3 percent in the final three months of 2011. That would be an improvement from the summer, when the annual rate was just 1.8 percent. And it's much better than the 0.9 percent growth rate in the first six months of 2011.
For the holiday season, many retailers drew customers by staying open on Thanksgiving Day or offering sharp discounts. Discounting helped generate record sales at the start of the shopping season and in the days before Christmas.
A survey of 25 merchants by the International Council of Shopping Centers found that revenue in December at stores open at least a year rose 3.5 percent over the same month a year ago. For November and December combined, the year-over-year gain was 3.3 percent.
That was a respectable increase. But it was less than the 3.8 percent year-over-year gain from 2009 to 2010.
The government's monthly report is a broader gauge of retail sales. It covers purchases at all retailers, not just at major national chains. It also includes auto dealerships, restaurants and bars, grocery stores and gasoline stations.
U.S. automakers have said that November and December were their two best sales months in 2011. Their U.S. sales rose 10 percent to 12.8 million in 2011, a 23 percent jump from the recession year of 2009.
Chrysler Group reported sales surged 26 percent for all of 2011. General Motors Co. saw sales rise 13 percent for the year. Ford Motor Co. reported an 11 percent gain for 2011.
The government's retail sales report is seasonally adjusted. That way, the current month can be compared with the previous month. But the figures aren't adjusted for inflation.
A separate government report each month measures consumer spending. It's an even more inclusive gauge. It covers all spending at retailers _ for both durable goods like cars that are expected to last for years and nondurable goods such as food.
This report also covers spending on services. Services include items such as doctor's visits, airline tickets, apartment rentals and utility bills. The service category makes up two-thirds of consumer spending and isn't covered in the retail surveys.