TT website states a 0% rate on long-term cap gains if single and <$40k in taxable income. However, IRS page www.irs.gov/taxtopics/tc409 puts the cutoff at <$80k???

[Bsch4477]

The IRS discussion you cited  is poorly written since it doesn’t say if the $80,000 is for filing single or married jointly.  The fact is that the $40,000 amount is for filing single and the $80,000 is for filing married jointly. 

[keithfield99]

Thank you @bscha.

The IRS statement reads: "Some or all net capital gain may be taxed at 0% if your taxable income is less than $80,000. A capital gain rate of 15% applies if your taxable income is $80,000 or more but less than $441,450 for single..."

At the bottom of the page it notes that this irs.gov page was very recently updated: March 5, 2021.

Could it be that this will be the figure for next year's TY2021 filing????

Thanks again for your help with this!