Website for Economies of Business-friendly States Act of 2021 or the WEBS Act of 2021 This bill requires the Department of Commerce to establish a website that provides relevant information about the business environment of each state for a person considering establishing a business in the state or relocating a business to the state. The website must include information such as descriptions of (1) state business income and payroll taxes, (2) incentives for establishing or relocating a business to the state, (3) minimum wage requirements of the state, and (4) job training programs available in the state. Commerce must also promote the website to foreign persons who may be considering relocating a business to or otherwise investing in the United States.