Wisconsin Mortgage Interest Deduction
Wisconsin Mortgage Interest Deduction 2026
Wisconsin homeowners should first test whether mortgage interest is deductible under federal Schedule A rules, then separately review Wisconsin return treatment. The federal deduction, Form 1098 records, property-tax records, and any Wisconsin itemized deduction credit calculation are separate pieces of the same filing workflow.
Primary taxpayer
Wisconsin resident or filer evaluating mortgage interest deduction
Federal check
Review the IRS deduction or income reporting rule first
State check
Wisconsin return treatment and 7.65% top state rate
Canonical route
/deduction/mortgage-interest/wisconsin/
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 Wisconsin 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
- Wisconsin return instructions, schedules, or state workpapers
- Receipts, statements, confirmations, or logs supporting the amount
- A short note showing how federal and state calculations differ