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Instructions for Schedule A (Form 1040)
taxmap/instr/i1040sca-005.htm#TXMP6562d577

Casualty and Theft Losses(p9)

rule
taxmap/instr/i1040sca-005.htm#TXMP60136c24

Line 20(p9)

rule
Complete and attach Form 4684 to figure the amount of your loss to enter on line 20.
You may be able to deduct part or all of each loss caused by theft, vandalism, fire, storm, or similar causes; car, boat, and other accidents; and corrosive drywall. You may also be able to deduct money you had in a financial institution but lost because of the insolvency or bankruptcy of the institution.
You can deduct personal casualty or theft losses only to the extent that:
  1. The amount of each separate casualty or theft loss is more than $100, and
  2. The total amount of all losses during the year (reduced by the $100 limit discussed in (1) above) is more than 10% of the amount on Form 1040, line 38.
taxmap/instr/i1040sca-005.htm#TXMP4432f1dd
Disaster losses.(p9)
rule
The special rules that were in effect in 2008 and 2009 for losses of personal use property attributable to federally declared disasters do not apply to losses after 2009. However, the special rules apply to a loss you are deducting in 2010 from a disaster that was declared a federal disaster in tax years beginning after 2007 and that occurred before 2010 but which you could not deduct in the year it occurred because you were not sure whether part of it would be reimbursed and you became reasonably certain in 2010 that it would not be reimbursed. See Form 4684 and its instructions for details.
Use Schedule A, line 23, to deduct the costs of proving that you had a property loss. Examples of these costs are appraisal fees and photographs used to establish the amount of your loss.