South Carolina State Income Tax Deduction
South Carolina State Income Tax Deduction 2026
South Carolina changed its individual income tax workflow for 2026 under H.4216, including a federal AGI starting point and the South Carolina Income Adjusted Deduction. That state calculation is separate from the federal SALT itemized deduction, so South Carolina taxpayers should model the state return and federal Schedule A separately.
Primary taxpayer
South Carolina resident or filer evaluating state income tax deduction
Federal check
Review the IRS deduction or income reporting rule first
State check
South Carolina return treatment and 5.21% top state rate
Canonical route
/deduction/state-income-tax/south-carolina/
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 South Carolina 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
- South Carolina return instructions, schedules, or state workpapers
- Receipts, statements, confirmations, or logs supporting the amount
- A short note showing how federal and state calculations differ