Dave is a plumber who uses the cash method

Dave Stevens, age 34, is a self-employed physical therapist. His wife Sarah, age 31, teaches English as a Second Language at a local language school. Dave’s Social Security number is 111-11-1111. Sarah’s Social Security number is 222-22-2222. Sarah and Dave have three children—Andrew, age 8; Isaac, age 6; and Mira, age 3. The children’s Social Security numbers are, respectively, 333-33-3333, 444-44-4444, and 555-55-5555. They live at 12637 Pheasant Run, West Bend, Oregon 74658. They paid $8,900 in qualified residence interest and $2,400 in property taxes on their home. They had cash charitable contributions of $14,000. They also paid $180 to a CPA for preparing their federal and state income tax returns for the prior year, $100 of which was for the preparation of Dave’s Schedule C. Sarah and Dave earned interest on CDs of $3,200. Sarah’s salary for the year is $32,000, from which $9,600 in federal income tax and $1,400 in state income tax were withheld. Dave’s office is located at Suite 402, 942 Wood view Drive, Portland, Oregon 74624, and his employer ID number is 11-1111111. Dave has been practicing for four years, and he uses the cash method of accounting. During the current year, Dave recorded the following items of income:
Revenue from patient visits.......................................... $300,000
Interest earned on the office checking balance................... 225
The following expenses were recorded on the office books:
Property taxes on the office.............................................. $ 4,500
Mortgage interest on the office.......................................... 12,000
Depreciation on the office..................................................... 4,500
Malpractice insurance.......................................................... 37,500
Utilities...................................................................................... 3,750
Office staff salaries................................................................ 51,000
Rent payments on equipment............................................. 15,000
Office magazine subscriptions.................................................. 150
Office supplies........................................................................ 24,000
Medical journals........................................................................... 330
Dave pays $50 annually for use of a safety deposit box to store certain confidential documents related to his business. In addition to his medical practice, Dave spends 15 hours every week managing his real estate investments. To make sure he is aware of all current investment strategies and best practices, he subscribes to the following journals:
Wall Street Journal.................................................................... $150