$34,320 per year

For a single filer earning $40,000 in South Dakota (tax year 2026), the take-home pay is approximately $34,320 per year after $2,620 federal income tax, $3,060 in FICA (Social Security and Medicare), and $0 in state and local taxes. This is an effective tax rate of 14.20%.

The numbers on this page assume no pre-tax deductions. If you contribute to 401(k), HSA, healthcare FSA, or dependent care FSA, your actual federal tax will be lower. Use the live calculator to model exact pre-tax deductions — it applies them to your federal taxable wages and, for verified states (currently Pennsylvania, Michigan, and California), to your state taxable wages too.

Common reasons: (1) pre-tax deductions your employer withholds — if you haven't entered them in the live calculator, your paycheck shows lower taxes; (2) W-4 withholding is an IRS safe-harbor estimate, not your true tax owed — you reconcile at filing; (3) state and local tax credits (EITC, property tax relief, child tax credit) that we don't model; (4) post-tax deductions like Roth 401(k) contributions or wage garnishments; (5) multiple jobs or side income changing your effective bracket.

The live calculator caps HSA input at the 2026 family limit ($8,750). If you have self-only HDHP coverage, your limit is $4,400 — enter no more than that. The age-55+ HSA catch-up contribution ($1,000) is not yet modeled. HSA contributions are pre-tax for FICA only when made through a §125 cafeteria plan (standard employer payroll deduction); standalone HSA contributions are post-FICA-tax.

The One, Big, Beautiful Bill Act (signed July 2025) raised the Dependent Care FSA limit from $5,000 to $7,500 starting tax year 2026. For married filing separately, the limit is $3,750 (raised from $2,500). The live calculator applies the correct limit based on your filing status. This is the first DCFSA limit increase since 1986.

Not yet. The live calculator exposes only the regular limits ($24,500 for 401(k), $8,750 for HSA family). Age-50+ adds $8,000 to 401(k) under §414(v); age-60-63 adds $11,250 under SECURE 2.0; age-55+ adds $1,000 to HSA under §223(b)(3). Catch-up support is on the roadmap; for now, treat the calculator's results as an upper bound on tax for older filers using catch-up.

A state or city is verified when its tax tables, rates, and brackets have been cross-checked against the official Department of Revenue publications for the given tax year. We list our primary-source citations on every page. Unverified jurisdictions are excluded from search indexing (with a noindex tag) and labeled "coming soon" — we don't show approximate data presented as authoritative. As of tax year 2026, six US jurisdictions are verified.

Your effective tax rate (14.20%) is your total tax divided by your gross income — the average percentage of your income that goes to taxes. Your marginal tax rate (19.65%) is the rate that applies to your next dollar of income. Marginal rates are always equal to or higher than effective rates in a progressive tax system.

South Dakota does not levy an individual income tax on wages for tax year 2026. Nine US states fall into this category: Alaska, Florida, Nevada, New Hampshire, South Dakota, Tennessee, Texas, Washington, and Wyoming. Residents still pay federal income tax and FICA (Social Security and Medicare) on their wages. Note that "no income tax" refers to wages and salaries — some of these states tax other forms of income or have other state-level taxes that this calculator does not model. Washington has a 7% capital gains excise tax (RCW 82.87) on long-term gains above the statutory threshold that does not apply to wage earners. New Hampshire's Interest and Dividends Tax was fully repealed effective January 1, 2025, and Tennessee's Hall Income Tax (also on interest and dividends) was fully repealed effective January 1, 2021 — neither state has ever taxed wages. State and local sales taxes, property taxes, and excise taxes still apply in all nine states and are not reflected in this calculator's take-home figure.

This calculator applies the standard deduction ($16,100 for Single). If you itemize using IRS Schedule A — typically when your mortgage interest, state and local taxes (capped at $10,000), charitable donations, and qualified medical expenses exceed the standard deduction — your federal taxable income will differ. We don't model itemization because it requires line-by-line input and is highly individualized. Use IRS Schedule A worksheets or consult a tax professional for itemized scenarios.

Federal income tax, FICA (Social Security + Medicare + Additional Medicare), and state income tax are computed from official 2026 IRS, SSA, and state Department of Revenue tables. This page assumes no pre-tax deductions, no itemized deductions, no tax credits, and W-2 wage income only. The live calculator supports 401(k)/HSA/FSA pre-tax deductions; itemized deductions, credits, self-employment income, and multi-state allocation aren't modeled.