Board Thread:Naruto Discussions/@comment-26800188-20150721182335/@comment-734582-20150808131434

GreatestSin wrote: naruto spammed hakra-taxing-shadow-clones and rasengan without any signs of "running empthy" ^_^ Shadowclones do not require much chakra, indeed almost none at all. Shadowclones evenly divide the chakra among the clones and the original. So if you have low chakra and use shadowclones you may drop your chakra levels below safe, which is why it was labelled a forbidden jutsu.

Boruto probably has a significant chakra pool but likely nothing like Naruto, though probably above Sasuke.