
Self-employed taxpayers are subject to higher risk of IRS audit than wage earners
and must be able to substantiate income and expenses reported on Schedule C if
audited. A good accounting and record-keeping system is recommended for all
self-employed taxpayers, no matter how small the business. The high audit rate is
due to government reports showing high levels of underreporting of net business
income among sole proprietors.
Manufacturers’ Deduction
In 2010, taxpayers are allowed a manufacturers’ deduction calculated as 9 percent of the
lesser of (1) qualified production income or (2) taxable (or adjusted gross) income. How-
ever, the maximum deduction cannot exceed 50 percent of the employer’s W-2 wage
expense. The deduction is available to individuals, partnerships, S corporations, C corpo-
rations, cooperatives, estates, and trusts.
Qualified production receipts do not include proceeds from the sale of food and bever-
ages prepared at a retail establishment.
EXAMPLE Ian, a calendar year taxpayer, owns and operates a shop that manu-
factures racing headers for classic Mustangs. He has AGI of $400,000
and qualified production income of $420,000. If he pays $225,000 in
W-2 wages to his employees, lan’s manufacturers’ deduction for 2010
is $36,000 [9 percent (lesser of $400,000 or $420,000), not to exceed
50 percent of $225,000]. N
Self-Study Problem 4.10
Teri Kataoka is self-employed as a professional golf teacher. She uses the
cash method of accounting and her Social Security number is 466-47-8833.
Her principal business code is 812990. Teri’s business is located at 1234
Golfcrest Dr., Palm Springs, CA 92262. During 2010, Teri had the following
income and expenses:
Fees from golf lessons $ 39,250
Expenses:
Car mileage (6,056 business miles) 3,028
Business liability insurance 450
Life insurance on Teri ($250,000) 325
Office expense 640
Rent on office space 2,700
City busi ness license 250
Travel expense 3,100
Meals and entertainment 1,790
Utilities 975
Teri bought her car on January 1, 2010. She used it to commute 3,000 miles
and she drove 6,000 miles for nonbusiness purposes.
Complete Schedule C on pages 4-35 and 4-36 for Teri showing her net
income from self-employment.
4-24 Chapter 4
Business Income and Expenses, Part II
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