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COMPREHENSIVE PROBLEM 1:14-66 Mike Webb, married to Nancy Webb, is employed by a large pharmaceutical company and earns a salary. In addition, Mike is an entrepreneur and has two small businesses on the side, both of which operate as sole proprietorships. One is a profitable consulting 44 business where Mike provides financial and retirement advice to pharmacists. The other involves the manufacture of Christmas novelties in China, selling the products in gift shops in the U.S. This business is struggling. However, Mike feels the Christmas novelty business has great potential. Mike reports the following for 2018: Salary $157,000 Consulting practice: Revenues $65,000 Ordinary expenses 12.000 53,000 Sole proprietorship: Revenues $22,000 Ordinary Expenses 40,000 (18,000) Interest (none tax-exempt) 3,000 Dividends, qualified 9,000 LTCG $24,000 STCL (4,000) 20,000 Itemized deductions: State and local taxes (before limitations) S14,000 I Real estate taxes (before limitations) 8,000 Mortgage interest on personal residence 7,000 Charitable contributions 8,000 37.000 Child care expenses: The Webb's have two dependent children, ages 13 and 11, and SILL 17,000) ZU,UVU Itemized deductions: State and local taxes (before limitations) $14,000 Real estate taxes (before limitations) 8,000 Mortgage interest on personal residence 7,000 Charitable contributions 8,000 37,000 Child care expenses: The Webb's have two dependent children, ages 13 and 11, and pay child care expenses of $4,000 per year for each child. Nancy is not employed, but is a full-time student (all of 2018) at State University, majoring in Accounting. Federal income tax withheld from salary $21,000 Estimated taxes paid for 2018 14,000 For 2017, Mike and Nancy's AGI was $175,000 and their actual federal income tax li- ability was $29,000. a. Compute the Webbs regular federal income tax liability for 2018, including self- employment taxes, b. Are the Webbs subject to AMT in 2018, assuming they have additional AMT prefer- ences of $70,000? c. Are the Webbs due a refund for 2018? d. Are the Webbs subject to any underpayment penalties for 2018