Illinois tools
Find Illinois-specific tax calculators for income tax, refund timelines, withholding, and deductions. These tools map local rules to clear, IRS-aligned outputs for 2025-2026.
Quick links to the most-used state calculators for Illinois.
Property tax deduction estimator (federal) (IL)
Search intent: Illinois property tax deduction
SALT deduction optimizer (federal impact) (IL)
Search intent: Illinois SALT deduction cap workaround
State Social Security taxability checker (IL)
Search intent: does Illinois tax social security
State capital gains tax estimator (IL)
Search intent: Illinois capital gains tax calculator
State estimated tax (quarterly) calculator (IL)
Search intent: Illinois estimated tax calculator
State income tax calculator (IL)
Search intent: Illinois state income tax calculator
State paycheck withholding calculator (IL)
Search intent: Illinois paycheck withholding calculator
State refund timeline estimator (IL)
Search intent: Illinois tax refund status time
State retirement income taxability checker (IL)
Search intent: does Illinois tax retirement income
State standard deduction & credits finder (IL)
Search intent: Illinois standard deduction 2025
State tax notice/letter decoder (IL)
Search intent: Illinois tax notice letter code
State unemployment income taxability checker (IL)
Search intent: does Illinois tax unemployment income