State income tax

South Dakota state income tax: no income tax

South Dakota has no state individual income tax — wages are not taxed at the state level.

Direct answer

Quick answer

Current south dakota state income tax: no income tax rules and rates by state, with the calculator to apply them to your own numbers.

Reviewed by BoringToolsKit · August 26, 2026 · This state's rate verified 2026-09-12 against the state's own document: dor.sd.gov Individuals - 'South Dakota is one of seven states that does not impose a state income tax.'. Simplified illustration for a single filer — excludes the standard deduction, exemptions, credits, and any local/city income taxes, and real state rules differ (married-filer brackets, phase-outs, inflation indexing). Rules change year to year; verify with the state revenue department. Informational, not tax advice.

The big picture

How South Dakota taxes income

Nine states collect no individual income tax: Alaska, Florida, Nevada, New Hampshire, South Dakota, Tennessee, Texas, Washington, and Wyoming. Ordinary wages face no state income tax.

Run your numbers

Infographic: how South Dakota state income tax is calculated for tax year 2026 at an $80,000 taxable income, with the bracket slices and the effective rate. — How South Dakota income tax works at $80,000 taxable income, using the rate verified against South Dakota's own revenue-department document on 2026-09-12.

Worked example

No state income tax

South Dakota collects no individual income tax — wages are not taxed at the state level.

Quick answers

State income tax questions, answered

What is the difference between marginal and effective state income tax?

Your marginal rate taxes only the last dollar of income; your effective rate is total state tax divided by total income. In a graduated state most filers’ effective rate is well below the top marginal rate.

Does South Dakota collect any individual income tax?

No — wages are not taxed at the state level in South Dakota.

Which states have no individual income tax?

Alaska, Florida, Nevada, New Hampshire, South Dakota, Tennessee, Texas, Washington, and Wyoming collect no state individual income tax on wages.

Is this calculator tax advice?

No — this is a simplified illustration for a single filer that excludes the standard deduction, exemptions, credits, and local/city taxes. Verify with the state revenue department.

Put the rate to work

See the state income tax comparison table, the full bracket index, or the salary-to-hourly converter.