South Dakota tools
Find South Dakota-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 South Dakota.
Property tax deduction estimator (federal) (SD)
Search intent: South Dakota property tax deduction
SALT deduction optimizer (federal impact) (SD)
Search intent: South Dakota SALT deduction cap workaround
State Social Security taxability checker (SD)
Search intent: does South Dakota tax social security
State capital gains tax estimator (SD)
Search intent: South Dakota capital gains tax calculator
State estimated tax (quarterly) calculator (SD)
Search intent: South Dakota estimated tax calculator
State income tax calculator (SD)
Search intent: South Dakota state income tax calculator
State paycheck withholding calculator (SD)
Search intent: South Dakota paycheck withholding calculator
State refund timeline estimator (SD)
Search intent: South Dakota tax refund status time
State retirement income taxability checker (SD)
Search intent: does South Dakota tax retirement income
State standard deduction & credits finder (SD)
Search intent: South Dakota standard deduction 2025
State tax notice/letter decoder (SD)
Search intent: South Dakota tax notice letter code
State unemployment income taxability checker (SD)
Search intent: does South Dakota tax unemployment income