Can I amend a filed return in TNTAP? Yes, paper or electronic returns can be amended on TNTAP. March 31, 2017 18:55 Related articles What if I make a mistake filing my tax return on TNTAP? Can I cancel/change a return in TNTAP? Will I be able to make a change to my payment even after I have submitted it to the Department of Revenue? Navigating in the TNTAP Home Screen If the due date for filing a return falls on a weekend or holiday, when is the return due?