Not having had taxes paid on even though required.(adjective)
Not tired or strained, working well within capacity.(adjective)
Wiktionary.org : Text is available under the Creative Commons Attribution-ShareAlike License
Use "untaxed" in a sentence
"Gas companies are accumulating large land parcels to sell to even bigger international companies, lured by the potential for billions in untaxed earnings -- if they succeed in persuading New York State politicians allow fracking to begin without taxing it."
"Finance Ministry officials said Wednesday that Merz and Germany's Wolfgang Schaeuble will also declare their intention to resolve the issue of billions of euros (dollars) in untaxed German assets sitting in Swiss accounts."
"NORML is doing nothing, one could notice publicly, to promote the idea of untaxed, unregulated self cultivation."