{
  "slug": "sales-tax-south-dakota",
  "title": "South Dakota Sales Tax Calculator",
  "heading": "South Dakota Sales Tax Calculator",
  "category": "financial",
  "url": "https://www.revenuelab.fyi/toolbox/sales-tax-south-dakota",
  "summary": "Add South Dakota state and local sales tax to any purchase price.",
  "description": "South Dakota taxes most services, which many states exempt. South Dakota's statewide base rate is 4.2%, and the average local add-on runs about 1.9%, for a typical combined rate near 6.10%. Adjust the local rate below to match your exact city or county.",
  "formula": "Tax = Price × (State rate + Local rate) ÷ 100; Total = Price + Tax.",
  "dateModified": "2026-09-30",
  "run_url": "https://www.revenuelab.fyi/api/public/calc?tool=sales-tax-south-dakota",
  "inputs": [
    {
      "id": "price",
      "label": "Purchase price before tax",
      "kind": "number",
      "hint": null,
      "default": 100,
      "unit": "$",
      "min": 0,
      "max": null
    },
    {
      "id": "state",
      "label": "South Dakota state rate",
      "kind": "number",
      "hint": null,
      "default": 4.2,
      "unit": "%",
      "min": 0,
      "max": 15
    },
    {
      "id": "local",
      "label": "Local city/county rate",
      "kind": "number",
      "hint": null,
      "default": 1.9,
      "unit": "%",
      "min": 0,
      "max": 10
    },
    {
      "id": "qty",
      "label": "Quantity",
      "kind": "number",
      "hint": null,
      "default": 1,
      "unit": null,
      "min": 1,
      "max": null
    }
  ],
  "outputs": [
    {
      "id": "total",
      "label": "Total with sales tax",
      "format": "currency",
      "hint": null,
      "primary": true
    },
    {
      "id": "tax",
      "label": "Sales tax owed",
      "format": "currency",
      "hint": null,
      "primary": false
    },
    {
      "id": "rate",
      "label": "Combined tax rate",
      "format": "percent",
      "hint": null,
      "primary": false
    },
    {
      "id": "stateTax",
      "label": "South Dakota state portion",
      "format": "currency",
      "hint": null,
      "primary": false
    },
    {
      "id": "localTax",
      "label": "Local portion",
      "format": "currency",
      "hint": null,
      "primary": false
    },
    {
      "id": "reverse",
      "label": "Pre-tax price if your figure already includes tax",
      "format": "currency",
      "hint": null,
      "primary": false
    }
  ],
  "worked_example": {
    "inputs": [
      "Purchase price before tax: 100 $",
      "South Dakota state rate: 4.2 %",
      "Local city/county rate: 1.9 %",
      "Quantity: 1"
    ],
    "outputs": [
      "Total with sales tax: $106.10",
      "Sales tax owed: $6.10",
      "Combined tax rate: 6.100%",
      "South Dakota state portion: $4.20",
      "Local portion: $1.90",
      "Pre-tax price if your figure already includes tax: $94.25"
    ]
  },
  "how_to": {
    "title": "How to use this",
    "steps": [
      "Enter purchase price before tax ($).",
      "Enter south dakota state rate (%).",
      "Enter local city/county rate (%).",
      "Enter quantity.",
      "Read your total with sales tax on the right — it updates as you type.",
      "Hit Share to keep the scenario or send it to someone."
    ]
  },
  "scenarios": [
    {
      "name": "Conservative",
      "description": "Lower-end numbers — what if things land soft?",
      "values": {
        "price": 60,
        "state": 2.52,
        "local": 1.14,
        "qty": 1
      }
    },
    {
      "name": "Typical",
      "description": "Defaults — the most common real-world setup.",
      "values": {
        "price": 100,
        "state": 4.2,
        "local": 1.9,
        "qty": 1
      }
    },
    {
      "name": "Ambitious",
      "description": "Higher-end numbers — what if things really pop?",
      "values": {
        "price": 160,
        "state": 6.720000000000001,
        "local": 3.04,
        "qty": 2
      }
    }
  ],
  "limitations": [
    "Results are estimates before tax, fees, and inflation unless an input explicitly covers them.",
    "Rates are treated as fixed for the whole period — variable-rate products will drift from this projection.",
    "This is educational maths, not financial advice. Check anything contractual with the lender or your accountant."
  ],
  "faq": [
    {
      "q": "How does the south dakota sales tax calculator work?",
      "a": "South Dakota taxes most services, which many states exempt. South Dakota's statewide base rate is 4.2%, and the average local add-on runs about 1.9%, for a typical combined rate near 6.10%. Adjust the local rate below to match your exact city or county. The underlying maths is: Tax = Price × (State rate + Local rate) ÷ 100; Total = Price + Tax."
    },
    {
      "q": "What do I need to enter?",
      "a": "4 values: purchase price before tax, south dakota state rate, local city/county rate, and quantity. Each field starts with a sensible default, so you can change one number at a time and watch the result move."
    },
    {
      "q": "What does the total with sales tax result mean?",
      "a": "It is returned as a money amount in US dollars and updates live as you edit the inputs, so you can compare two or three versions of a scenario in a few seconds."
    },
    {
      "q": "Is this calculator free, and do I need an account?",
      "a": "Yes, it's free, and no account is required. Nothing you type is stored on our servers — the maths runs entirely in your browser."
    },
    {
      "q": "How accurate is the result?",
      "a": "It applies the standard formula exactly, so the arithmetic is precise. Results are estimates before tax, fees, and inflation unless an input explicitly covers them."
    },
    {
      "q": "Who is this tool for?",
      "a": "It's built for anyone comparing money scenarios before committing — budgeting a payment, sanity-checking a quote, or seeing what a change in rate or term actually costs."
    }
  ],
  "related": [
    "https://www.revenuelab.fyi/toolbox/sales-tax-california",
    "https://www.revenuelab.fyi/toolbox/sales-tax-texas",
    "https://www.revenuelab.fyi/toolbox/sales-tax-new-york"
  ],
  "license": "CC-BY-4.0",
  "citation": "RevenueLab — South Dakota Sales Tax Calculator (https://www.revenuelab.fyi/toolbox/sales-tax-south-dakota)"
}