My federal income tax refund received is $11,732 shorter than anticipated as calculated by Turbo tax. My IRS account indicates that they are calculating an addition Net Investment Income Tax (Form 8960) by this difference but don't show the inputs to determine how they calculated that. I have pored over my return, following the numbers through TurboTax and reading the Form 8960 instructions and recalculating manually, and I don't come up with what the IRS is. Has anyone else had this issue?
