Smith, 19, will compete at Las Vegas Motor Speedway (March 2), Bristol Motor Speedway (April 6), Richmond Raceway (April 12 and Sept. 20), Dover International Speedway (May 4 and Oct. 5) and Iowa Speedway (June 16 and July 27).
He will be sponsored by The Cosmopolitan of Las Vegas for the Las Vegas race.
Smith joins JR Motorsports after making 36 starts in the ARCA Racing Series since in 2016. He finished second in the standings this year after earning four wins and 12 top fives in 20 starts.
The native of Huntington Beach, California, also made his Gander Outdoors Truck Series debut in June at Gateway Motorsports Park with DGR-Crosley. He finished fifth.
The move confirms that the No. 9 team will be piloted by multiple drivers next season.
“Zane is going to be an important part of the lineup for the No. 9 team next year,” said team owner Dale Earnhardt Jr. said in a press release. “It’s a great opportunity for him. The team is going to take on a different feel with a handful of drivers taking turns throughout the year, but the goal remains the same – to help these drivers gain experience and continue to advance their careers. We started the Xfinity program with that mindset and it’s something we’re proud to continue.”
The other drivers for the No. 9 as well as the crew chief and partner lineup will be named at a later date.
“I’m super pumped to be a part of JR Motorsports with the No. 9 team for eight races,” Smith said in the press release. “I’m counting down the days until Las Vegas, which will be my debut in the Xfinity series. I can’t thank The Cosmopolitan of Las Vegas enough for making this happen, along with all of my other partners who have gotten me this far. Having Dale and Kelley (Earnhardt Miller) as bosses and to lean on is going to be awesome. They are huge icons of the sport. It is unreal to be a part of their team, so I’m just going to try and take it all in.”