Yes, line 38 is an estimated tax penalty. Funny, I only had W-2 income last year aside from a modest amount of investment income. How is the estimated tax penalty calculated? Seems if I have $2K being refunded/credited to 2021, you wouldn't think I underpaid whatsoever. We only had $16K in earnings that didn't have tax withheld. My Excel spreadsheet for quarterly estimates seemed to show a shortage so I paid nearly $10K in estimated tax. I guess I'll sift thru Turbo Tax again and perhaps it will explain the penalty. What am I missing? Thanks.
