Missouri Casualty and Theft Loss (Federal Disaster)
Missouri Casualty and Theft Loss (Federal Disaster) 2026
Missouri disaster-loss planning should verify the federal disaster declaration, event date, property basis, insurance reimbursement, fair-market-value decline, and Form 4684 calculation before estimating savings. Then check the MO return because state disaster-loss treatment may not match the federal Schedule A result.
Primary taxpayer
Missouri resident or filer evaluating casualty and theft loss (federal disaster)
Federal check
Review the IRS deduction or income reporting rule first
State check
Missouri return treatment and 4.7% top state rate
Canonical route
/deduction/casualty-loss-disaster/missouri/
What matters for 2026
- Use this exact state page when the search intent names both the deduction topic and the state.
- Separate the federal deduction, state return treatment, and local filing records before estimating savings.
- Verify the current-year IRS and state source links before taking a filing position.
Next step
Use the main deduction guide for calculator inputs, eligibility checks, related forms, and broader federal rules.
Open the full guidePlanning workflow
- 1Confirm whether the federal itemized, above-the-line, credit, exclusion, or income-reporting rule applies.
- 2Review Missouri filing instructions separately instead of assuming the federal result carries over.
- 3Keep source documents, worksheets, receipts, and return workpapers together for audit support.
- 4Use the linked LevyIO guide for broader calculator inputs, then return to this page for the state-specific checklist.
Records to keep
- Federal form or worksheet tied to the deduction topic
- Missouri return instructions, schedules, or state workpapers
- Receipts, statements, confirmations, or logs supporting the amount
- A short note showing how federal and state calculations differ
Primary sources
2026 savings example for Missouri
Planning estimate for a single filer earning $60,374 (Missouri median household income in LevyIO's state dataset) who removes $5,000 from taxable income. Federal tax uses the 2026 IRS brackets after the $16,100 standard deduction; MO tax uses the state brackets in LevyIO's dataset and assumes the state follows the federal treatment.
Estimated total savings
$835
Federal savings
$600
$5,065 → $4,465 · 12% bracket
MO state savings
$235
$1,900 → $1,665 · 4.7% marginal
Combined marginal rate
16.7%
≈ $167 saved per $1,000 deducted
Statutory maximum for this item in LevyIO's dataset: $500,000.
Federal × Missouri marginal rates (2026, single)
Gross-income ranges include the federal standard deduction. The MO column is the state marginal rate at the midpoint of each range. The last column is the tax saved per $1,000 deducted at that combined rate.
| Federal bracket | Gross income (single) | MO marginal | Combined | Per $1,000 |
|---|---|---|---|---|
| 10% | $16,100 - $28,500 | 3.5% | 13.5% | $135 |
| 12% | $28,500 - $66,500 | 4.7% | 16.7% | $167 |
| 22% | $66,500 - $121,800 | 4.7% | 26.7% | $267 |
| 24% | $121,800 - $217,875 | 4.7% | 28.7% | $287 |
| 32% | $217,875 - $272,325 | 4.7% | 36.7% | $367 |
| 35% | $272,325 - $656,700 | 4.7% | 39.7% | $397 |
| 37% | Over $656,700 | 4.7% | 41.7% | $417 |
Eligibility & forms
Victims of federally declared disasters
- Federally declared disaster area
- Loss exceeds 10% of AGI minus $100
- Insurance claim filed
Federal forms: Form 4684, Schedule A
Missouri filing notes
Missouri allows a federal income tax deduction based on federal tax actually paid, so filing software may differ from this estimate. Check the 2026 withholding formula, Form MO-1040, Form MO-A, and the DOR capital gains subtraction FAQ for current filing treatment.
Common mistakes: Not filing insurance claim first; Including losses outside disaster area.
Frequently asked questions
How much can the Casualty and Theft Loss (Federal Disaster) save a Missouri taxpayer in 2026?
In LevyIO's example, a single filer with $60,374 of income (the Missouri median household income in our state dataset) who removes $5,000 from taxable income saves about $600 in 2026 federal tax (12% marginal bracket) plus about $235 in Missouri tax (4.7% state marginal rate), roughly $835 combined. It is a planning estimate computed from the 2026 IRS brackets and LevyIO's MO bracket data, not a survey figure.
What is the Missouri income tax rate for 2026?
Missouri has a progressive income tax with a top rate of 4.7%. The MO standard deduction in LevyIO's dataset is $16,100 single / $32,200 married. 2026 DOR withholding formula uses indexed annual brackets to 4.7% above $9,436 and standard deductions of $16,100 single / $32,200 married. Federal income tax deduction allowed.
Who qualifies for the Casualty and Theft Loss (Federal Disaster) in Missouri?
Victims of federally declared disasters. The federal rules are the same in every state; the requirements are: Federally declared disaster area; Loss exceeds 10% of AGI minus $100; Insurance claim filed. Missouri filers should confirm on the MO return whether the state follows the federal treatment.
Which forms do I file to claim the Casualty and Theft Loss (Federal Disaster)?
Federal: Form 4684, Schedule A. Missouri: check the Missouri Department of Revenue instructions for the matching state schedule. Common mistakes: Not filing insurance claim first; Including losses outside disaster area.
Casualty and Theft Loss (Federal Disaster) in other states
Sources
Reviewed 2026-09-17. Estimates are educational planning figures computed from the IRS 2026 inflation adjustments and LevyIO's state bracket dataset; they are not tax advice.