Proof of Loss

To deduct a casualty or theft loss, you must be able to show that there was a casualty or theft. You also must be able to support the amount you take as a deduction.

Casualty loss. For a casualty loss, you should be able to show all the following.

1. The type of casualty (car accident, fire, storm, etc.) and when it occurred.
2. That the loss was a direct result of the casualty.
3. That you were the owner of the property, or if you leased the property from someone else, that you were contractually liable to the owner for the damage.

Theft loss. For a theft loss, you should be able to show all the following.

1. When you discovered that your property was missing.
2. That your property was stolen.
3. That you were the owner of the property.

It is important that you have records that will prove your deduction. If you do not have the actual records to support your deduction, you can use other satisfactory evidence that is sufficient to establish your deduction.

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