Let the wage war begin.

Less than a week after Wal-Mart announced that it would raise wages for 500,000 employees to $9 an hour in April, off-price retailer TJX said in its fourth-quarter earnings report that it, too, will boost pay.

The parent company of T.J. Maxx, Marshalls and HomeGoods said Wednesday its full- and part-time hourly U.S. employees will earn at least $9 an hour starting in June. In 2016, all hourly U.S. workers who have been with the company for six months or more will earn at least $10 an hour.

Read MoreThe Wal-Mart headline you probably missed



"At TJX, we attribute our success over the last 38 years primarily to the people we have hired who have remained focused on our mission of delivering consumers amazing values," CEO Carol Meyrowitz said in the company's earnings release.

"This pay initiative is an important part of our strategies to continue attracting and retaining the best talent in order to deliver a great shopping experience for our customers, remain competitive on wages in our U.S. markets, and stay focused on our value mission."