What's the effective tax rate in South Dakota at $100,000 single filer in 2026?

South Dakota has no state income tax, so a $100K single filer in South Dakota pays only federal income tax (~$14,000) + FICA ($7,650) = ~21.7% effective rate. The calculator above gives you the exact number including any 401(k) + HSA deductions.

When are South Dakota tax brackets updated for 2026?

South Dakota has no state income tax, so there's nothing to update annually. Federal brackets refresh each October when the IRS publishes Rev. Proc. for the upcoming tax year. Current calculator values are 2026 projected.

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South Dakota Paycheck Calculator 2026 — No State or Corporate Tax

Drop your South Dakota gross salary — get annual + monthly + bi-weekly take-home, full breakdown of federal + FICA + South Dakota state tax, effective rate, and how you compare to the South Dakota median household. South Dakota has no state income tax — federal + FICA only.

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Reviewed by CalcBold Editorial · Sources: IRS Pub 15-T 2026 (projected) + SSA wage-base 2026 + South Dakota Department of Revenue — no personal income taxLast verified May 13, 2026Methodology

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How much do I take home in South Dakota? — short answer first

South Dakota is one of nine US states with no personal income tax — the prohibition is constitutional (Article XI Section 1, requiring a statewide referendum to amend). South Dakota also has no corporate income tax, making it uniquely attractive for trust planning and dynasty trust formation — the state is one of the most popular US jurisdictions for ultra-high-net-worth trust planning, alongside Alaska and Nevada. Sales tax is low (4.2% state + up to 2% local; Sioux Falls combined 6.2%), and property tax is moderate (~1.17% effective). For wage earners, South Dakota is one of the simplest and lowest-burden tax structures in the US.

How South Dakota taxes payroll in 2026

South Dakota has no personal income tax — the prohibition is constitutional (Article XI Section 1 of the South Dakota Constitution), requiring a statewide referendum to amend. This has held since the state's founding in 1889. Your South Dakota paycheck is reduced only by federal income tax (IRS 2026 brackets), Social Security (6.2% up to ~$181,000), and Medicare (1.45% on all wages + 0.9% additional above $200K single / $250K joint). South Dakota also has no corporate income tax — a structure that has made the state uniquely attractive for trust planning. Combined with favorable trust law (no rule against perpetuities, allowing 'dynasty trusts' to operate indefinitely), South Dakota is one of the most popular US jurisdictions for ultra-high-net-worth trust formation, alongside Alaska and Nevada. The state also offers strong asset-protection statutes. There is no state disability insurance, no PFML deduction, no county or city income tax anywhere in South Dakota. The state funds public services through three primary streams: (1) Sales tax — 4.2% state + up to 2% local (Sioux Falls combined 6.2%, among the lowest US combined rates); (2) Property tax — ~1.17% effective rate statewide, with substantial homestead exemptions for owner-occupied homes; (3) Excise and severance taxes on banking + mining + agricultural revenue. South Dakota has consistently ranked among the top 5 most tax-friendly US states for retirees (alongside Florida, Nevada, Wyoming, and Tennessee). No Social Security tax + no pension tax + no 401(k) tax + low sales tax + moderate property tax = highly competitive for retirees with substantial qualified-plan income.

South Dakota city callouts

Sioux Falls — Combined sales tax 6.2% (among lowest US); property tax ~1.17% effective; banking + healthcare + retail anchor; rapid post-2020 population growth.
Rapid City — Combined sales tax 6.5%; property tax ~1.25% effective; tourism (Black Hills) + tech + military (Ellsworth AFB) anchors; cost of living ~15% below US average.

How to use this calculator

Enter your annual gross salary. Pre-tax, what your employer pays before any deductions.
Pick filing status. Single, married filing jointly, married filing separately, or head of household. Drives both federal and South Dakota brackets.
Add 401(k) and HSA contributions (optional). Both lower your federal taxable income; HSA also lowers FICA wages.
Read the verdict. Annual + monthly + bi-weekly take-home, federal + state + local breakdown, and effective tax rate.

Common mistakes

Confusing gross with adjusted gross. The calculator wants your gross salary — what your employer pays before any pre-tax deductions or contributions. If you enter your W-2 Box 1 (already net of 401k), the math will under-count your tax.
Forgetting that 401(k) is still subject to FICA. Traditional 401(k) reduces federal income tax but NOT Social Security + Medicare. Only HSA (through payroll) reduces both.
Ignoring multi-state implications. If you work in South Dakota but live elsewhere (or vice versa), you may owe taxes in both states with a credit between them. This calculator assumes you both live and work in South Dakota.

Methodology & Sources

Federal income tax + FICA: IRS Pub 15-T 2026 projected brackets + Social Security Administration 2026 wage base ($181,000) + Medicare 1.45% (no cap) + Additional Medicare 0.9% above $200K/$250K thresholds. South Dakota state income tax: South Dakota Department of Revenue — no personal income tax — last verified 2026-05-13. Brackets refresh annually — most state DORs publish updates in Q4 preceding the tax year. Federal 2026 figures are projected from 2025 (Rev. Proc. 2024-40) with ~2.5% inflation adjustment; refresh against IRS October release.

Frequently asked questions

Does South Dakota really have no income tax?

Yes — South Dakota has no personal income tax (constitutional, Article XI §1). Your paycheck is reduced only by federal taxes + FICA. The state has held this position since founding in 1889. Combined with no corporate income tax, no inheritance tax, and no estate tax, SD is one of the most tax-friendly US states.

Why is South Dakota famous for trust planning?

South Dakota combines no state income tax + favourable trust law (no rule against perpetuities, allowing dynasty trusts indefinitely) + strong asset-protection statutes + no estate or inheritance tax. The combination makes SD one of the most popular US jurisdictions for ultra-high-net-worth trust formation, alongside Alaska and Nevada. Trustee fees and legal services anchor a meaningful share of SD's professional economy.

Are there any local income taxes in South Dakota?

No — South Dakota has no local income tax at any city or county level. Sioux Falls, Rapid City, Aberdeen, and Pierre all fund services through property tax (effective ~1.17% statewide) and 4.2% state sales tax + up to 2% local (Sioux Falls combined 6.2%, among the lowest US combined sales tax rates).

How does South Dakota tax retirement income?

South Dakota does not tax any income — no Social Security, no pensions, no 401(k), no IRA, no Roth, no capital gains. Combined with no inheritance tax + no estate tax, SD is consistently ranked among the top 5 most retirement-friendly US states (with FL, NV, WY, TN). Cost of living is also moderate (~10% below US average in major SD metros).

Want to compare South Dakota take-home pay against another state? Use the national take-home pay calculator with a flat-rate state input. To see what you'd save by changing your 401(k) contribution, drop the gross salary into the salary-to-hourly calculator. For cost-of-living adjustments when comparing jobs across states, the cost of living calculator adjusts for housing + groceries + tax differences between metros.

Frequently Asked Questions

The most common questions we get about this calculator — each answer is kept under 60 words so you can scan.

What's the effective tax rate in South Dakota at $100,000 single filer in 2026?
South Dakota has no state income tax, so a $100K single filer in South Dakota pays only federal income tax (~$14,000) + FICA ($7,650) = ~21.7% effective rate. The calculator above gives you the exact number including any 401(k) + HSA deductions.
When are South Dakota tax brackets updated for 2026?
South Dakota has no state income tax, so there's nothing to update annually. Federal brackets refresh each October when the IRS publishes Rev. Proc. for the upcoming tax year. Current calculator values are 2026 projected.
Does South Dakota really have no income tax?
Yes — South Dakota has no personal income tax (constitutional, Article XI §1). Your paycheck is reduced only by federal taxes + FICA. The state has held this position since founding in 1889. Combined with no corporate income tax, no inheritance tax, and no estate tax, SD is one of the most tax-friendly US states.
Why is South Dakota famous for trust planning?
South Dakota combines no state income tax + favourable trust law (no rule against perpetuities, allowing dynasty trusts indefinitely) + strong asset-protection statutes + no estate or inheritance tax. The combination makes SD one of the most popular US jurisdictions for ultra-high-net-worth trust formation, alongside Alaska and Nevada. Trustee fees and legal services anchor a meaningful share of SD's professional economy.
Are there any local income taxes in South Dakota?
No — South Dakota has no local income tax at any city or county level. Sioux Falls, Rapid City, Aberdeen, and Pierre all fund services through property tax (effective ~1.17% statewide) and 4.2% state sales tax + up to 2% local (Sioux Falls combined 6.2%, among the lowest US combined sales tax rates).
How does South Dakota tax retirement income?
South Dakota does not tax any income — no Social Security, no pensions, no 401(k), no IRA, no Roth, no capital gains. Combined with no inheritance tax + no estate tax, SD is consistently ranked among the top 5 most retirement-friendly US states (with FL, NV, WY, TN). Cost of living is also moderate (~10% below US average in major SD metros).