{
  "id": "interest-calculator",
  "version": "7.0.0",
  "name": "Interest Calculator",
  "shortName": "Interest",
  "description": "Project compound growth with a nominal annual rate, selected compounding frequency, and end-of-month contributions.",
  "category": "Finance",
  "categorySlug": "finance",
  "keywords": [
    "interest"
  ],
  "status": "live",
  "workStatus": "pending",
  "reviewStatus": "pending",
  "migrationStatus": "migrated",
  "migratedDate": "2026-08-18",
  "engine": "legacy-react",
  "creator": null,
  "reviewer": null,
  "quality": {
    "availability": "live",
    "technicalReviewRecord": "/reviews/interest-calculator.json",
    "qualifiedReview": "pending",
    "qualifiedReviewer": null,
    "qualifiedReviewDate": null,
    "formulaVersion": "7.0.0",
    "referenceCoverage": "references-pending",
    "releaseTestScope": "Catalog and regression checks are not a professional formula audit; consult release evidence.",
    "historicalMetadataDate": "2026-08-18",
    "historicalMetadataNotice": "The imported date is not evidence of a completed human review."
  },
  "urls": {
    "page": "/calculator/interest-calculator/",
    "definition": "/calculator/interest-calculator/definition.json",
    "schema": "/calculator/interest-calculator/schema.json",
    "llms": "/calculator/interest-calculator/llms.txt",
    "legacyDefinition": "/calculator/interest-calculator.json"
  },
  "queryExample": "https://askcalculators.com/calculator/interest-calculator/?principal=10000&rate=5&time=10&contribution=0&compoundFreq=12",
  "queryParameters": {
    "principal": {
      "label": "Principal Amount",
      "type": "number",
      "required": false,
      "default": 10000
    },
    "rate": {
      "label": "Annual Interest Rate",
      "type": "number",
      "required": false,
      "default": 5
    },
    "time": {
      "label": "Time Period (Years)",
      "type": "number",
      "required": false,
      "default": 10
    },
    "contribution": {
      "label": "Monthly Contribution",
      "type": "number",
      "required": false,
      "default": 0
    },
    "compoundFreq": {
      "label": "Compounding Frequency",
      "type": "text",
      "required": false,
      "default": "12"
    }
  },
  "inputs": [
    {
      "id": "principal",
      "label": "Principal Amount",
      "type": "number",
      "defaultValue": 10000
    },
    {
      "id": "rate",
      "label": "Annual Interest Rate",
      "type": "number",
      "defaultValue": 5
    },
    {
      "id": "time",
      "label": "Time Period (Years)",
      "type": "number",
      "defaultValue": 10
    },
    {
      "id": "contribution",
      "label": "Monthly Contribution",
      "type": "number",
      "defaultValue": 0
    },
    {
      "id": "compoundFreq",
      "label": "Compounding Frequency",
      "type": "text",
      "defaultValue": "12"
    }
  ],
  "outputs": [
    {
      "id": "result",
      "label": "Result",
      "format": "text",
      "primary": true
    }
  ],
  "formula": {
    "expression": "Effective monthly rate = (1 + nominal annual rate ÷ compounds per year)^(compounds per year ÷ 12) − 1; each month balance grows by that rate, then the entered contribution is added."
  },
  "examples": [
    {
      "label": "Reproducible default-input example (not a personal recommendation)",
      "inputs": {
        "principal": 10000,
        "rate": 5,
        "time": 10,
        "contribution": 0,
        "compoundFreq": "12"
      }
    }
  ],
  "sources": []
}