Bill, who is single with no dependents, had AGI of $100,000. His AGI included net investment income of $15,000 and gambling income of $1,100. Bill incurred the following itemized deductions for income tax purposes.

Medical expenses (before 7.5% of AGI floor)

$11,000

State income taxes

3,200

Personal property tax

2,000

Real estate tax

$ 8,400

Interest on personal residence

12,200

Interest on home (never rented to others)

3,800

Interest on home equity loan (proceeds were used to buy a

 

new automobile)

2,700

Investment interest expense

3,300

Charitable contribution

5,000

Casualty loss (after $100 floor, before 10% of AGI floor)

13,000

Unreimbursed employee expenses (before 2% of AGI floor)

2,400

Gambling losses

900

What is Bill’s AMT adjustment for itemized deductions? Is it positive or negative?