TJ Maxx, online at tjmaxx.tjx.com, save money on hot items when shopping on TJ Maxx when applying our coupons, promo codes during checkout. Trust us, these coupons are good. Make the best of our TJ Maxx promo codes to get $5 OFF. All discounts are totally free to use. T.J.Maxx , sometimes referred to as TJ's , is an American department store chain. With more than 1,000 stores, T.J.Maxx is a major clothes retailer in the United States. Under the name T.K. Maxx , it operates stores throughout the United Kingdom, Ireland, Germany and Poland. At the end of 2012, there were 343 stores in Europe.