that is good information about the pass-through tax break that might help a lot of Square small businesses.

Yea, also taxpayers can begin filing after January 28th!

https://www.irs.gov/newsroom/irs-confirms-tax-filing-season-to-begin-january-28 

Yup, here's a simple example of how it works:

Taxpayer with a Schedule C Filing Single

$100,000 Net Profit from Schedule C (this is your Qualified Business Income QBI)

Total Income                                       $100,000

Single Standard Deduction              <$12,000>

SE Tax Deduction                               <$7,650>

Taxable Income                                    $80,350

Take the lesser of:

20% of QBI = (20%) * ($100,000) = $20,000 or

20% of Taxable Income = (20%) * ($80,350) =  $16,070

Your QBI Deduction is $16,070

What does this do? It lowers your taxable income

New Taxable Income $80,350 - $16,070 = $64,280

You now pay tax on $64,280 instead of $80,350