{
  "slug": "sales-tax",
  "title": "Sales Tax Calculator",
  "heading": "Sales Tax Calculator",
  "category": "financial",
  "url": "https://www.revenuelab.fyi/toolbox/sales-tax",
  "summary": "Add (or strip out) sales tax from a price.",
  "description": "Compute total price after sales tax, plus the implied tax-free price when working backwards from a total.",
  "formula": null,
  "dateModified": "2026-10-03",
  "run_url": "https://www.revenuelab.fyi/api/public/calc?tool=sales-tax",
  "inputs": [
    {
      "id": "price",
      "label": "Pre-tax price",
      "kind": "number",
      "hint": null,
      "default": 100,
      "unit": "$",
      "min": 0,
      "max": null
    },
    {
      "id": "rate",
      "label": "Tax rate",
      "kind": "number",
      "hint": null,
      "default": 8.25,
      "unit": "%",
      "min": 0,
      "max": null
    }
  ],
  "outputs": [
    {
      "id": "total",
      "label": "Total with tax",
      "format": "currency",
      "hint": null,
      "primary": true
    },
    {
      "id": "tax",
      "label": "Tax amount",
      "format": "currency",
      "hint": null,
      "primary": false
    }
  ],
  "worked_example": {
    "inputs": [
      "Pre-tax price: 100 $",
      "Tax rate: 8.25 %"
    ],
    "outputs": [
      "Total with tax: $108.25",
      "Tax amount: $8.25"
    ]
  },
  "how_to": {
    "title": "How to use this",
    "steps": [
      "Enter pre-tax price ($).",
      "Enter tax rate (%).",
      "Read your total with 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,
        "rate": 8.25
      }
    },
    {
      "name": "Typical",
      "description": "Defaults — the most common real-world setup.",
      "values": {
        "price": 100,
        "rate": 8.25
      }
    },
    {
      "name": "Ambitious",
      "description": "Higher-end numbers — what if things really pop?",
      "values": {
        "price": 160,
        "rate": 8.25
      }
    }
  ],
  "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 sales tax calculator work?",
      "a": "Compute total price after sales tax, plus the implied tax-free price when working backwards from a total."
    },
    {
      "q": "What do I need to enter?",
      "a": "2 values: pre-tax price, and tax rate. 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 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/tip"
  ],
  "license": "CC-BY-4.0",
  "citation": "RevenueLab — Sales Tax Calculator (https://www.revenuelab.fyi/toolbox/sales-tax)"
}