Board Thread:Naruto Discussions/@comment-3568954-20151024114124/@comment-734582-20151123095553

Actionmanrandell wrote: even if he didn't have kurama in him his entire life he would still have chakra atleast 4 times as large as kakashi. Unlikely. Naruto's chakra merged with Kurama's over time. Remember that he couldn't summon a big enough frog until he learned to access Kurama's power. Naruto learned to use this merged power first and then the complete reserve eventually. But without Kurama Naruto's reserves would be nothing special. (Excluding transmigrancy stuff, we've only seen two Sage Transmigrants)

Kakashi actually has considerable reserves. It's just that the Sharingan uses a lot of it. But that means that according to the established laws, his chakra would be continuously growing as his eye essentially is a form of training.