Wildfires, tornadoes, storms, landslides, and flooding…. It’s almost as if you can’t turn on the news without seeing images of a disaster striking somewhere. If you’ve suffered property loss as the result of these events, or other circumstances, you may be able to claim a casualty loss deduction on your federal income tax return.
What’s a casualty loss?
A casualty is the destruction, damage, or loss of property caused by an unusual, sudden, or unexpected event. You can experience a casualty loss as the result of something as sweeping as a natural disaster, or as limited in scope as an act of vandalism. You probably don’t have a deductible casualty loss, however, if your property is damaged as the result of gradual deterioration (e.g., a long-term termite infestation).
Calculating your loss
The rules for calculating loss can be different for business property, or property that’s used to produce income (think rental property). To calculate a casualty loss on personal-use property, like your home, that’s been damaged or destroyed, you first need two important pieces of data:
The decrease in the fair market value (FMV) of the property; that’s the difference between the FMV of the property immediately before and after the casualty
Your adjusted basis in the property before the casualty; your adjusted basis is usually your cost if you bought the property (different rules apply if you inherited the property or received it as a gift), increased for things like permanent improvements and decreased for items such as depreciation
Starting with the lower of the two amounts above, subtract any insurance or other reimbursement that you have received or that you expect to receive. The result is generally the amount of your loss. If you receive insurance payments or other reimbursement that is more than your adjusted basis in the destroyed or damaged property, you may actually have a gain. There are special rules for reporting such gain, postponing the gain, excluding gain on a main home, and purchasing replacement property.
The $100 and 10% rules
After you determine your casualty loss on personal-use property, you have to reduce the loss by $100. The $100 reduction applies per casualty, not per individual item of property. Two or more events that are closely related may be considered a single casualty. For example, wind and flood damage from the same storm would typically be considered a single casualty event, subject to only one $100 reduction. If both your home and automobile were damaged by the storm, the damage is also considered part of a single casualty event–you do not have to subtract $100 for each piece of property.
You must also reduce the total of all your casualty and theft losses on personal property by 10% of your adjusted gross income (AGI) after each loss is reduced by the $100 rule, above.
If you are married and file a joint return, you are treated as one individual in applying both the $100 rule and the 10% rule. It does not matter whether you own the property jointly or separately. If you file separately, you are each subject to both rules. If only one spouse owns the property, usually only that spouse can claim the associated loss on a separate return.
Reporting a casualty loss
Generally, you report and deduct the loss in the year in which the casualty occurred. Special rules, however, apply for casualty losses resulting from an event that’s declared a federal disaster area by the president.
If you have a casualty loss from a federally declared disaster area, you can choose to report and deduct the loss in the tax year in which the loss occurred, or in the tax year immediately preceding the tax year in which the disaster happened. If you elect to report in the preceding year, the loss is treated as if it occurred in the preceding tax year. Reporting the loss in the preceding year may reduce the tax for that year, producing a refund. You generally have to make a decision to report the loss in the preceding year by the federal income tax return due date (without any extension) for the year in which the disaster actually occurred.
Casualty losses are reported on IRS Form 4684, Casualties and Thefts. Any losses relating to personal-use property are carried over to Form 1040, Schedule A, Itemized Deductions.
The rules relating to casualty losses can be complicated. Additional information can be found in the instructions to Form 4684 and in IRS Publication 547, Casualties, Disasters, and Thefts. If you have suffered a casualty loss, though, you should consider discussing your individual circumstances with a tax professional.
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