{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$id": "https://askcalculators.com/calculator/periodic-interest-rate-calculator/schema.json",
  "title": "Periodic Interest Rate Calculator inputs",
  "description": "Calculate the periodic rate from a nominal annual rate or from an effective annual rate.",
  "type": "object",
  "properties": {
    "annualRateType": {
      "title": "Annual rate type",
      "type": "string",
      "default": "nominal",
      "enum": [
        "nominal",
        "effective"
      ],
      "x-optionLabels": {
        "nominal": "Nominal annual rate",
        "effective": "Effective annual rate"
      }
    },
    "annualRate": {
      "title": "Annual interest rate",
      "type": "number",
      "default": 6,
      "minimum": -99.99,
      "maximum": 1000,
      "x-step": 0.001,
      "x-unit": "percent"
    },
    "periodsPerYear": {
      "title": "Periods per year",
      "type": "number",
      "default": 12,
      "minimum": 1,
      "maximum": 365,
      "x-step": 1,
      "multipleOf": 1
    }
  },
  "required": [
    "annualRateType",
    "annualRate",
    "periodsPerYear"
  ],
  "additionalProperties": false,
  "x-askcalculators": {
    "version": "1.0.0",
    "calculatorUrl": "https://askcalculators.com/calculator/periodic-interest-rate-calculator/",
    "queryExample": "https://askcalculators.com/calculator/periodic-interest-rate-calculator/?annualRateType=nominal&annualRate=6&periodsPerYear=12",
    "migrationStatus": "new",
    "reviewStatus": "pending",
    "pageStatus": "live",
    "workStatus": "pending",
    "formula": {
      "expression": "nominal: i = j/m; effective: i = (1+EAR)^(1/m) − 1"
    },
    "quality": {
      "availability": "live",
      "technicalReviewRecord": "/reviews/periodic-interest-rate-calculator.json",
      "qualifiedReview": "pending",
      "qualifiedReviewer": null,
      "qualifiedReviewDate": null,
      "formulaVersion": "1.0.0",
      "referenceCoverage": "references-pending",
      "releaseTestScope": "Catalog and regression checks are not a professional formula audit; consult release evidence.",
      "historicalMetadataDate": "2026-09-01",
      "historicalMetadataNotice": "The imported date is not evidence of a completed human review."
    },
    "outputs": {
      "periodicRate": {
        "title": "Periodic interest rate",
        "type": "number",
        "x-format": "percent",
        "x-digits": 12,
        "x-primary": true
      },
      "nominalAnnualRate": {
        "title": "Equivalent nominal annual rate",
        "type": "number",
        "x-format": "percent",
        "x-digits": 10
      },
      "effectiveAnnualRate": {
        "title": "Equivalent effective annual rate",
        "type": "number",
        "x-format": "percent",
        "x-digits": 10
      }
    }
  }
}