Is “Overtax” a Scrabble word?
Yes
OVERTAX
Valid in at least one Scrabble dictionary
Valid in these dictionaries
SOWPODS / CSW
Scrabble UK & International
TWL / NWL
Scrabble North America
Large English Dictionary
General English word list
Meaning of Overtax
verb
1.To tax to an excessive degree
2.To overburden
“The overtaxed shaft snapped.”