Solution :
QBI 300000 W-2 wages 40000
Taxable 3814000 QBP 10000
income
W-2 limit
Phase greater of
out MFJ
Start 315000 50% of W-2 20000
Finish 415000 or 25% of W-2 10250
+ 2.5% of QBP
Selected 20000 Being higher As part 1
Taxable income above phase out
[tex]$\frac{381,400-315000}{100000}$[/tex] 66%
Now applying gross deduction and phase out
Gross deduction Being 20% of QBI = 66000
Less : wage limit of QBI - 20000
Phase out % x 66%
Phase out amount 30,360
Final deduction = gross deduction- phase out amount
= 66,000 - 30,360
= 35,640