To mark National Hurricane Preparedness Week, the IRS wants you to know it stands ready to help. If you suffer damage to your home or personal property, you may be able to deduct the losses you incur on your federal income tax return. Here are 10 tips you should know about deducting casualty losses:

  1. Casualty loss. You may be able to deduct losses based on the damage done to your property during a disaster. A casualty is a sudden, unexpected or unusual event. This may include natural disasters like hurricanes, tornadoes, floods and earthquakes. It can also include losses from fires, accidents, thefts or vandalism.
  2. Normal wear and tear. A casualty loss does not include losses from normal wear and tear. It does not include progressive deterioration from age or termite damage.
  3. Covered by insurance. If you insured your property, you must file a timely claim for reimbursement of your loss. If you don't, you cannot deduct the loss as a casualty or theft. You must reduce your loss by the amount of the reimbursement you received or expect to receive.
  4. When to deduct. As a general rule, you must deduct a casualty loss in the year it occurred. However, if you have a loss from a federally declared disaster area, you may have a choice of when to deduct the loss. You can choose to deduct the loss on your return for the year the loss occurred or on an amended return for the immediately preceding tax year. Claiming a disaster loss on the prior year's return may result in a lower tax for that year, often producing a refund.
  5. Amount of loss. You figure the amount of your loss using the following steps:
    • Determine your adjusted basis in the property before the casualty. For property you buy, your basis is usually its cost to you. For property you acquire in some other way, such as inheriting it or getting it as a gift, you must figure your basis in another way. For more see Publication 551, Basis of Assets.
    • Determine the decrease in fair market value, or FMV, of the property as a result of the casualty. FMV is the price for which you could sell your property to a willing buyer. The decrease in FMV is the difference between the property's FMV immediately before and immediately after the casualty.
    • Subtract any insurance or other reimbursement you received or expect to receive from the smaller of those two amounts.
  6. $100 rule. After you have figured your casualty loss on personal-use property, you must reduce that loss by $100. This reduction applies to each casualty loss event during the year. It does not matter how many pieces of property are involved in an event.
  7. 10 percent rule. You must reduce the total of all your casualty or theft losses on personal-use property for the year by 10 percent of your adjusted gross income.
  8. Future income. Do not consider the loss of future profits or income due to the casualty as you figure your loss.
  9. Form 4684. Complete Form 4684, Casualties and Thefts, to report your casualty loss on your federal tax return. You claim the deductible amount on Schedule A, "Itemized Deductions."
  10. Business or income property. Some of the casualty loss rules for business or income property are different than the rules for property held for personal use.

You can call the IRS disaster hotline at 866-562-5227 for special help with disaster-related tax issues. For more on this topic and the special rules for federally declared disaster area losses see Publication 547, Casualties, Disasters, and Thefts. You can get it and IRS tax forms on IRS.gov/forms at any time.

Additional IRS Resources:

September 2017
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Upcoming Tax Dates

September 5 — Everyone
Federal Holiday (Labor Day) Details

September 10 — Communications and air transportation taxes under the alternative method.
Deposit the tax included in amounts billed or tickets sold during the first 15 days of August.

September 11 — Employees who work for tips
If you received $20 or more in tips during August, report them to your employer Details

September 14 — Regular method taxes
Deposit the tax included in amounts billed or tickets sold during the last 16 days of August.

September 15 — Individuals
Make a payment of your 2017 estimated tax if you are not paying your income tax for the year through withholding (or will not pay in enough tax that way). Use Form 1040-ES. This is the third installment Details

September 15 — S Corporations
File a 2016 calendar year income tax return (Form 1120S) and pay any tax due. This due date applies only if you timely requested an automatic 6-month extension Details

September 15 — Partnerships
File a 2016 calendar year return (Form 1065). This due date applies only if you were given an additional 5-month extension Details

September 15 — Corporations
Deposit the third installment of estimated income tax for 2016 Details

September 15 — Social security, Medicare, and withheld income tax
If the monthly deposit rule applies, deposit the tax for payments in August.

September 15 — Nonpayroll withholding
If the monthly deposit rule applies, deposit the tax for payments in August.

September 27 — Communications and air transportation taxes under the alternative method.
Deposit the tax included in amounts billed or tickets sold during the last 16 days of August.

September 29 — Regular method taxes
Deposit the tax for the first 15 days of September.

September 29 — Regular method taxes (special September deposit rule)
Deposit the tax for the period beginning September 16 and ending September 26.

September 29 — Communications and air transportation taxes under the alternative method (special September deposit rule).
Deposit the tax included in amounts billed or tickets sold during the period beginning September 1 and ending September 11.

September 30 — Wagering tax
File Form 730 and pay the tax on wagers accepted during August.

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