M1CAT: Casualty and Theft (2025)
Minnesota · Minnesota DOR · Used for tax years 2025
Minnesota Schedule M1CAT reports gains and losses from casualties and thefts involving personal-use property. It calculates the casualty and theft loss amount to enter on Schedule M1SA, Minnesota Itemized Deductions, and is attached with that schedule to your Minnesota income tax
Who files this form
Use 2025 Schedule M1CAT to report gains and losses from casualties and thefts involving personal-use property. Attach it, along with Schedule M1SA, Minnesota Itemized Deductions, to your Minnesota income tax return.
Complete a separate Schedule M1CAT for each casualty or theft event.
Do not complete Schedule M1CAT if you completed federal Form 4684 to report a net gain from a casualty or theft on your federal income tax return.
What you'll need
Have the following information available:
- Your name and Social Security number.
- Each property's type, location, and date acquired.
- Each property's cost or other basis, usually its original cost plus improvements.
- Insurance coverage and other reimbursements received or expected, even if you did not file a claim.
- Each property's fair market value immediately before and after the casualty or theft. Fair market value is generally determined by a competent appraisal.
- The amount from line 1 of Form M1.
- Schedule M1SA, which must be attached with Schedule M1CAT to your Minnesota return.
If you completed federal Form 4684 because of a federally declared disaster area, use its information to complete Schedule M1CAT.
How to file
Attach Schedule M1CAT and Schedule M1SA to your Minnesota income tax return. The supplied text does not specify a mailing address or e-filing method.
- Use a separate column for each item lost or damaged in the same event. If there are more than four items, complete lines 1 through 9 on additional Schedules M1CAT.
- Complete lines 10 through 12 only once for each event.
- For multiple events, complete a separate schedule through line 12 for each event. Add the amounts from line 12 and enter the total on line 13 of the first schedule. Leave line 13 blank on the others.
- Include all Schedules M1CAT with your return.
- If you have a net loss, complete the schedule and enter the result from line 20 on line 19 of Schedule M1SA.
Common mistakes
- Leaving out schedules: Your refund will be delayed or denied if you do not include all Schedules M1CAT.
- Ignoring insurance because you did not file a claim: Line 3 must include insurance coverage and expected reimbursements, whether or not you filed a claim.
- Deducting an uncertain reimbursement too soon: Do not deduct the portion of a loss that might be reimbursed until the tax year when you become reasonably certain it will not be reimbursed.
- Including expenses that are not deductible: Do not deduct casualty-related personal injury treatment, rental car expenses, or costs to protect against future casualties.
- Deducting the same loss again: Do not include a loss previously deducted on an estate tax return.
- Using M1CAT after reporting a federal net gain: Do not complete this schedule if you completed federal Form 4684 to report a net casualty or theft gain.
Questions people ask
What kinds of losses can I deduct?
You can deduct property losses from fire, storm, shipwreck, other casualty, or theft. If the property is insured, you may deduct only the part your insurance policy would not reimburse if a claim were filed on time.
When should I deduct a loss?
Deduct the nonreimbursable part in the tax year the casualty occurred or the theft was discovered. If reimbursement is uncertain, wait to deduct that part until the tax year when you become reasonably certain it will not be reimbursed.
What if more than four items were damaged in one event?
Complete lines 1 through 9 on additional Schedules M1CAT for the extra items. Complete lines 10 through 12 on only one schedule for that event.
Are disaster grants or gifts treated as reimbursements?
Grants and other payments are reimbursements only if you must use them specifically to repair or replace your property. If there are no conditions on how you use the money, it is not a reimbursement.
What if I am later reimbursed for a loss I already deducted?
Include the reimbursement in taxable income for the year you receive it, but only to the extent the earlier deduction reduced your taxable income.