"I want to enjoy myself and be free. Number one, I will enjoy my family and not have to stress about the next race."
Rumours of an immediate switch by Stoner to V8 racing, joining the 888 Team of Craig Lowndes and Jamie Whincup, have also been denied by team boss Roland Dane.
Dane confirmed he had no plans to expand his team with Ipswich 300 winner Lowndes and Whincup both under contract next year.
Following his win in last week's US Grand Prix, Stoner is equal fourth in the all-time winners' list with 37 victories, level with the legendary Mike Hailwood.
MotoGP promoters are predicting Stoner could be offered wildcard invitations to races in the second half of the 2013 season, perhaps the Phillip Island GP.
"I'd have to think about it and I haven't thought about it too much. I just want to finish this year and do the best I can," Stoner said.
"I've had no second thoughts - I'm retiring from full-time racing."
Rumours that Stoner would pay $2.5 million for a V8 Supercar franchise and run his own team were also dismissed by his father and business manager Colin Stoner.
"Absolutely not - Casey won't be paying for a team licence, that is for sure," Colin Stoner said.
"If he needed to do that just to race, he can go and ride motorbikes for a lot, lot more money."
- AAP