Use Form 4684 to report gains and losses from casualties and thefts. Attach Form 4684 to your tax return.

You may deduct losses from fire, storm, shipwreck, or other casualty, or theft (for example, larceny, embezzlement, and robbery).

If your property is covered by insurance, you must file a timely insurance claim for reimbursement of your loss. Otherwise, you cannot deduct the loss as a casualty or theft loss. However, the part of the loss that is not covered by insurance is still deductible.

If the amount you receive in insurance or other reimbursement is more than the cost or other basis of the property, you have a gain. If you have a gain, you may have to pay tax on it, or you may be able to postpone the gain.

Do not report the gain on damaged, destroyed, or stolen property if you receive property that is similar or related to it in service or use. Your basis in the new property is the same as your basis in the old property.

Any tangible replacement property held for use in a trade or business is treated as similar or related in service or use to property held for use in a trade or business or for investment if:

Generally, you must recognize the gain if you receive unlike property or money as reimbursement. But you generally can choose to postpone all or part of the gain if, within 2 years of the end of the first tax year in which any part of the gain is realized, you purchase:

To postpone all of the gain, the cost of the replacement property must be equal to or more than the reimbursement you received for your property. If the cost of the replacement property is less than the reimbursement received, you must recognize the gain to the extent the reimbursement exceeds the cost of the replacement property.

If the replacement property or stock is acquired from a related person, gain generally cannot be postponed by:

For details, see section 1033(i).

For details on how to postpone the gain, see Pub. 547, Casualties, Disasters, and Thefts.

If your main home was located in a Presidentially declared disaster area, and that home or any of its contents were damaged or destroyed due to the disaster, special rules apply. See Gains Realized on Homes in Disaster Areas on page 2.

If you had property in the New York Liberty Zone (as defined in section 1400L(h)) that was converted because of the September 11, 2001, terrorist attacks, special rules may apply. See Gains Realized on Property in the New York Liberty Zone on page 2.

Deduct the part of your casualty or theft loss that is not reimbursable in the tax year the casualty occurred or the theft was discovered. However, a disaster loss and a loss from deposits in insolvent or bankrupt financial institutions may be treated differently. See Disaster Losses below and Special Treatment for Losses on Deposits in Insolvent or Bankrupt Financial Institutions on page 2.

If you are not sure whether part of your casualty or theft loss will be reimbursed, do not deduct that part until the tax year when you become reasonably certain that it will not be reimbursed.

If you are reimbursed for a loss you deducted in an earlier year, include the reimbursement in your income in the year you received it, but only to the extent the deduction reduced your tax in an earlier year.

See Pub. 547 for special rules on when to deduct losses from casualties and thefts to leased property.

A disaster loss is a loss that occurred in an area determined by the President of the United States to warrant Federal disaster assistance.

You may elect to deduct a disaster loss in the tax year immediately prior to the tax year in which the disaster occurred as long as the loss would otherwise be allowed as a deduction in the tax year it occurred.

This election must be made by filing your return or amended return for the prior year, and claiming your disaster loss on it, by the later of:

You may revoke your election within 90 days after making it by returning to the IRS any refund or credit you received from the election. If you revoke your election before receiving a refund, you must repay the refund within 30 days after receiving it.

On the return on which you claim the disaster loss, specify the date(s) of the disaster and the city, town, county, and state in which the damaged or destroyed property was located.

If your home was located in a disaster area and your state or local government ordered you to tear it down or move it because it was no longer safe to use as a home, the loss in value because it is no longer safe is treated as a disaster loss. The order for you to tear down or move the home must have been issued within 120 days after the area was officially declared a disaster area.

For purposes of figuring the disaster loss, use the value of your home before you moved it or tore it down as its fair market value (FMV) after the casualty.

The following rules apply if your main home was located in an area declared by the President of the United States to warrant Federal assistance as the result of a disaster, and the home or any of its contents were damaged or destroyed due to the disaster. These rules also apply to renters who receive insurance proceeds for damaged or destroyed property in a rented home that is their main home.

For details on how to postpone gain, see Pub. 547.

If you choose to postpone any gain on property located in the New York Liberty Zone (as defined in section 1400L(h)) that was converted because of the terrorist attacks on September 11, 2001, the period in which you must purchase replacement property may be extended until 5 years after the end of the first tax year in which any part of the gain is realized. However, the 5-year period applies only if substantially all of the use of the replacement property is in the city of New York, New York. In all other cases, the normal replacement period rules apply.

For details on how to postpone gain, see Pub. 547.

If you are an individual who incurred a loss from a deposit in a bank, credit union, or other financial institution because it became insolvent or bankrupt and you can reasonably estimate your loss, you can elect to deduct the loss as:

If you elect, you can wait until the year of final determination of the actual loss and treat that amount as a nonbusiness bad debt. A nonbusiness bad debt is deducted on Schedule D (Form 1040), Capital Gains and Losses, as a short-term capital loss.

If you are a 1% or more owner or an officer of the financial institution, or are related to any such owner or officer, you cannot deduct the loss as a casualty loss or as an ordinary loss. See Pub. 550, Investment Income and Expenses, for the definition of “related.”

You cannot elect the ordinary loss deduction if any part of the deposits related to the loss is federally insured.

If you elect to deduct the loss as a casualty loss or as an ordinary loss and you have more than one account in the same financial institution, you must include all your accounts. Once you make the election, you cannot change it without permission from the IRS.

To elect to deduct the loss as a casualty loss, complete Form 4684 as follows: On line 1, enter the name of the financial institution and write “Insolvent Financial Institution.” Skip lines 2 through 9. Enter the amount of the loss on line 10, and complete the rest of Section A.

If, in a later year, you recover an amount you deducted as a loss, you may have to include in your income the amount recovered for that year. For details, see Recoveries in Pub. 525, Taxable and Nontaxable Income.