Thanks for your response. Strange. Same thing happened in TY20 where "recomputed deductions" were also about $2K larger than TT. And for TY20, I haven't (yet) gotten a letter nor an additional refund. My TY20 Tax Retn transcript still has the TT refund unchanged from the original amount, never recalculated due to the IRS "recomputed" deductions. Zooming in...the $2K difference in deductions (TT v. IRS) can't be due to med, nor contributions, nor taxes (capped at $10K). Therefore, it must be mortgage interest. But the TY20 Wage & Income Transcript is correct. However, a portion of the interest paid to bank (as reported on 1098) was not QMI. So, my Sch A mortgage interest was less than what was on bank's 1098. The balance was reported as deductible investment interest expense from Form 4952. But that all looks correct. I guess eventually I'll get a supplemental refund(s). Or not. At least it's in my favor. Thanks for any other thoughts. Meanwhile, I'm waiting for IRS "approval" before I submit my state return.
