TT's 1040 line 11b for 2019 shows taxable income of $47,371 ( married filing jointly ). line 12a & 12b tax shows $5,257 but I calculate it $5,296.52. Which is right?

[SteamTrain]

Probably the TTX calc.

You are likely just using the tax tables....but the tax tables alone aren't used if you had any $$ in boxes 1a,1b, or 2a of a 1099-DIV form, or any other long-term capital gains on brokerage transactions.  Special calcs. are used since those other types of income are taxed at lower rates,or not at all.. 

[bstevens33]

Yes, your explanation fits my situation and is undoubtedly the answer!  Thanks for the quick response!! Much appreciated.

[StarP]

thanks,. I was looking up for same question and your answer helped me figure it out