The actor, who plays Bobby Singer on the CW drama, confirmed his plans to Digital Spy at the 2011 Comic-Con in San Diego.
"I'm actually toying with the idea of writing a script myself," said Beaver. "But as lazy as I am, I might not finish it until season 46!"
Beaver's co-star Jensen Ackles has previously directed two episodes of Supernatural, including the third instalment of the upcoming seventh season.
Ackles recently told Digital Spy that his latest directorial effort was "challenging" and "a very difficult script to direct".
Supernatural will return to The CW on Friday, September 23 at 9/8c.
> Comic-Con 2011: Supernatural panel - Live Blog
Watch Jim Beaver discuss the future of Supernatural with Digital Spy below: