Problem $9-42($LO$.6)$

Scott and Laura are married and will file a joint tax return. Scott has a sole proprietorship $($not a "specified services" business$)$ that generates qualified business income of $\backslash (\backslash$$ $300,000\backslash ).$ The proprietorship pays $\backslash (\backslash$mathrm$\{$W$\}-2\backslash )$ wages of $\backslash (\backslash$$ $40,000\backslash )$ and holds qualified property with an unadjusted basis of $\backslash (\backslash$$ $10,000\backslash ).$ Laura is employed by a local school district. Their taxable income before the QBI deduction is $\backslash (\backslash$$ $443,900\backslash )($this is also their modified taxable income$).$

a$.$ Determine Scott and Laura's QBI deduction, taxable income, and tax liability for $2024.$

b$.$ After providing you with the original information in the problem, Scott finds out that he will be receiving a $\backslash (\backslash$$ $6,000\backslash )$ bonus in December $2024($increasing their taxable income before the QBI deduction by this amount$).$ Redetermine Scott and Laura's QBI deduction, taxable income, and tax liability for $2024.$

c$.$ What is the marginal tax rate on Scott's bonus? Enter the percent to one decimal place.