I have a client who after subtracitng the standard deduction has no taxable income. They are filing to get withholding back from a 1099R. Though they don't need it, if I enter the $600 above the line charitable contribution, it will create a $600 NOL. Hmmmmm! I'm sure that is incorrect somehow. I went back to his 2020 return (the above was for 2021) and entered the above the line charitable deduction of $300 and it created a $300 NOL. Is this a proseries problem? I would not file a return with the NOL, but others might by mistake.