Personal Disaster Loss Deduction

Personal Disaster Loss Deduction

We seem to be living in an age of natural disasters. Floods, fires, hurricanes, tornados, and other disasters often dominate the news. If a personal disaster strikes you, the tax law may help. When defined as such by the tax code, a personal disaster loss may qualify for deduction from your taxable income. The rules for personal disaster losses are complex and far more restrictive than for business losses.

Only Casualty Losses Are Deductible

Damage to personal property caused by a disaster is deductible only if it qualifies as a casualty loss. A casualty is damage to, destruction of, or loss of property from events such as fires and floods that are sudden, unexpected, or unusual. The disaster must result in physical damage to property, so economic losses due to the COVID-19 pandemic do not qualify as a casualty loss.

Many, but not all, casualty losses are covered by insurance. The insurance recovery reduces your tax-deductible loss and could result in a taxable gain. And here’s a possible nasty surprise. Say you have a deductible loss after reducing the loss by the insurance recovery. If you want to deduct the loss on your taxes, you must file a timely insurance claim, even if that insurance claim will result in the cancellation of your policy or an increase in premiums.

Personal Disaster Loss Calculation

Your casualty loss (not your deduction) is equal to the lesser of:

  1. the decrease in the property’s fair market value after the disaster, or
  2. the property’s adjusted basis before the disaster (usually its cost).

Subtract any insurance or other reimbursement from the lesser of these two options. To find the decline in the property’s fair market value, you can use an appraisal or the repair costs. 

Limits on Personal Disaster Losses

Unfortunately, you can’t deduct all your casualty losses. From 2018 through 2025, you can deduct personal casualty losses only due to a federally declared disaster or to the extent you have casualty gains. For example, a homeowner can claim a casualty loss if a wildfire (declared a federal disaster) destroys his home. But he gets no deduction if a faulty fireplace caused the fire and destroys his home (no federal disaster).

The law imposes major limits on your casualty-loss deduction. The general rule says that you first reduce the loss by $100 and deduct the remaining loss only to the extent it exceeds 10 percent of your adjusted gross income (AGI). Your final hurdle is that claim the loss as an itemized deduction. These rules significantly reduce or even eliminate many casualty loss deductions.

Fortunately, some casualty losses are not subject to these limits, including disaster losses sustained due to a federally declared major disaster from January 1, 2020, to February 25, 2021. Instead, losses from such disasters are subject to a $500 floor with no 10-percent-of-AGI reduction. Under this rule, you deduct the loss whether or not you itemize. If you don’t itemize, you add the deductible loss to your standard deduction.

You have a choice for losses from a federal disaster: claim the loss in the year of the disaster or on the prior year’s return if it’s before October 15. This can result in a quick refund of all or part of the tax you paid that year.

Casualty Gains

If all this is not complicated enough, there’s one further wrinkle. A casualty such as a fire can result in a casualty gain instead of a casualty loss when the insurance proceeds you receive exceed the property’s adjusted basis (cost). A casualty gain is taxable. But you may deduct casualty losses from the gains. Here, you don’t need a federal disaster. Also, you can postpone tax on a casualty gain by buying replacement property.


IRS Publication 547

IRS Form 4684


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