How does QBI deduction worksheet work at the end of Schedule C? This is under QBI income deduction info. How do I link it?

The QBI calculation is not working yet in TurboTax. It will be added in a future update. The early versions of TurboTax are incomplete and have a lot of bugs. There will be frequent updates through December and January to add missing functions and fix bugs.

The new 20% QBI deduction is available to Sch C filers and when the program is fully updated sometime late January at the earliest ... you will see the deduction happen automatically. 

The new section 199A deduction propagates from the QBI Deduction Summary to the 1040 Worksheet to Form 1040 line 9.

What is the new 20% QBI Deduction
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I find QBI some what confusing. However, this might be helpful 

https://www.irs.gov/newsroom/treasury-irs-issue-final-regulations-other-guidance-on-new-qualified-bu.

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