H&R Block 2023 Tax Software - Deluxe + State - PC / Mac Sealed Download is a tax preparation product that comes in a product key card format. It supports English language and can be installed on Apple Mac OS X 10.5 Leopard, Microsoft Windows 10, and Mac operating systems. The software requires a minimum of 256 MB RAM and 1 GHz processor speed. It can be used on up to 5 devices and includes both federal and state tax preparation.