What is a Casualty loss deduction for disasters?

A casualty loss deduction applies when sudden property damage is tied to a qualifying disaster. Under OBBBA Sec. 70109, governor-declared state disasters can now qualify as federal ones. The loss uses the lower of adjusted basis or fair market value for the decline, subtracts insurance, then applies a $100-per-event floor and 10% of AGI. For homeowners who sell, the basis can shift, changing the taxable gain. Use Sell your home planning.

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