How do I calculate my deduction for qualified business income for each quarter?

[leahpye]

Also, are quarters cumulative? (i.e. Do I add  quarter 1 and quarter 2 together to get my quarter 2 deduction for qualified business income)? The dates for quarter 1 read: 1/1/2018 to 3/31/2018. The dates for quarter 2 read 1/1/2018 to 5/31/2018.

[Cindy0H]

Yes, you are correct. The quarters are cumulative. TurboTax will, of course, calculate it for you. In this FAQ is the " How is this deduction calculated?" section. 

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https://ttlc.intuit.com/replies/7019998