DALLAS--(BUSINESS WIRE)--Ryan, a leading global tax services and software provider, has announced it is now the Official Tax Advisory Partner of the New York Islanders, heading into the team’s 50th Anniversary season. As part of the agreement, Ryan is conducting a sales and use tax review for the National Hockey League team. Ryan will also continue to work on business development projects. “As we continue to grow and expand our footprint, partnerships like this provide meaningful community outr ...