Super simple ?discrepancy?.

I was attempting to understand some calculations and decided to input only two items into a fresh Turbotax2023 tax return.  I input 40k of interest and 10k of LT Capital gains.  

Standard Deduction and Married filing jointly (no dependents). 

 

By my calculation, that should result in $22300 taxable ($12300 regular income should be taxed at 10% rate resulting in $1230 federal tax due).  However TTAx is indicating $1233 federal tax due.  I don't understand where the $3 discrepancy could be in such a simple return.  The summary table concurs with my $22300 taxable - fyi.  It's well below a Capital Gains 0% threshold of course.

 

What am I missing?