The seven-time champion is out of contract at the end of this year, but he and Mercedes are already in discussions about extending their deal.
At last weekend’s Miami Grand Prix, Mercedes team boss Toto Wolff suggested that it was only a matter of agreeing on finances for things to get across the line.
“It's not any difficult contract negotiations, it's just putting a different timeline and a few different numbers in there,” he said. “And that's what we do.
“We're working on this. It’s a work in progress, bouncing emails back and forth. And eventually we're going to sign it.”
While Hamilton looks set to remain in grand prix racing, that has not stopped him from expressing an interest in trying out different cars – even though he says he is reluctant to compete in another series.
Asked about potentially following previous world champions like Jenson Button and Kimi Raikkonen to NASCAR, Hamilton said: “I did a car swap with Tony Stewart years ago, which was fun. I'd love to try it at some stage.
Source: Autosport