{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$id": "https://askcalculators.com/calculator/sum-of-years-digits-depreciation-calculator/schema.json",
  "title": "Sum of Years Digits Depreciation Calculator inputs",
  "description": "Calculate accelerated depreciation using the sum-of-the-years-digits method and create a full schedule.",
  "type": "object",
  "properties": {
    "cost": {
      "title": "Asset cost",
      "type": "number",
      "default": 50000,
      "minimum": 0.01,
      "x-step": 100,
      "multipleOf": 100,
      "x-unit": "currency"
    },
    "salvageValue": {
      "title": "Salvage value",
      "type": "number",
      "default": 5000,
      "minimum": 0,
      "x-step": 100,
      "multipleOf": 100,
      "x-unit": "currency"
    },
    "usefulLife": {
      "title": "Useful life in years",
      "type": "number",
      "default": 8,
      "minimum": 1,
      "maximum": 100,
      "x-step": 1,
      "multipleOf": 1
    },
    "selectedYear": {
      "title": "Year to inspect",
      "type": "number",
      "default": 1,
      "minimum": 1,
      "maximum": 100,
      "x-step": 1,
      "multipleOf": 1
    }
  },
  "required": [
    "cost",
    "salvageValue",
    "usefulLife",
    "selectedYear"
  ],
  "additionalProperties": false,
  "x-askcalculators": {
    "version": "1.0.0",
    "calculatorUrl": "https://askcalculators.com/calculator/sum-of-years-digits-depreciation-calculator/",
    "queryExample": "https://askcalculators.com/calculator/sum-of-years-digits-depreciation-calculator/?cost=50000&salvageValue=5000&usefulLife=8&selectedYear=1",
    "migrationStatus": "new",
    "reviewStatus": "pending",
    "pageStatus": "live",
    "workStatus": "pending",
    "formula": {
      "expression": "year k depreciation = (cost − salvage) × (life − k + 1) ÷ [life(life+1)/2]"
    },
    "quality": {
      "availability": "live",
      "technicalReviewRecord": "/reviews/sum-of-years-digits-depreciation-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": {
      "selectedYearDepreciation": {
        "title": "Selected-year depreciation",
        "type": "number",
        "x-format": "currency",
        "x-primary": true
      },
      "sumOfYears": {
        "title": "Sum-of-years denominator",
        "type": "number",
        "x-format": "integer"
      },
      "totalDepreciation": {
        "title": "Total depreciation",
        "type": "number",
        "x-format": "currency"
      },
      "endingBookValue": {
        "title": "Ending book value",
        "type": "number",
        "x-format": "currency"
      }
    }
  }
}