{
  "id": "sum-of-years-digits-depreciation-calculator",
  "version": "1.0.0",
  "name": "Sum of Years Digits Depreciation Calculator",
  "shortName": "Sum of Years Digits Depreciation",
  "description": "Calculate accelerated depreciation using the sum-of-the-years-digits method and create a full schedule.",
  "category": "Finance",
  "categorySlug": "finance",
  "keywords": [
    "sum",
    "of",
    "years",
    "digits",
    "depreciation",
    "calculator",
    "sum of years digits depreciation calculator"
  ],
  "status": "live",
  "workStatus": "pending",
  "reviewStatus": "pending",
  "migrationStatus": "new",
  "engine": "native",
  "creator": null,
  "reviewer": null,
  "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."
  },
  "notice": "Accounting and tax depreciation rules can differ. This schedule is an educational estimate.",
  "urls": {
    "page": "/calculator/sum-of-years-digits-depreciation-calculator/",
    "definition": "/calculator/sum-of-years-digits-depreciation-calculator/definition.json",
    "schema": "/calculator/sum-of-years-digits-depreciation-calculator/schema.json",
    "llms": "/calculator/sum-of-years-digits-depreciation-calculator/llms.txt",
    "legacyDefinition": "/calculator/sum-of-years-digits-depreciation-calculator.json"
  },
  "queryExample": "https://askcalculators.com/calculator/sum-of-years-digits-depreciation-calculator/?cost=50000&salvageValue=5000&usefulLife=8&selectedYear=1",
  "queryParameters": {
    "cost": {
      "label": "Asset cost",
      "type": "money",
      "required": true,
      "default": 50000
    },
    "salvageValue": {
      "label": "Salvage value",
      "type": "money",
      "required": true,
      "default": 5000
    },
    "usefulLife": {
      "label": "Useful life in years",
      "type": "number",
      "required": true,
      "default": 8
    },
    "selectedYear": {
      "label": "Year to inspect",
      "type": "number",
      "required": true,
      "default": 1
    }
  },
  "inputs": [
    {
      "id": "cost",
      "label": "Asset cost",
      "type": "money",
      "required": true,
      "defaultValue": 50000,
      "min": 0.01,
      "step": 100
    },
    {
      "id": "salvageValue",
      "label": "Salvage value",
      "type": "money",
      "required": true,
      "defaultValue": 5000,
      "min": 0,
      "step": 100
    },
    {
      "id": "usefulLife",
      "label": "Useful life in years",
      "type": "number",
      "required": true,
      "defaultValue": 8,
      "min": 1,
      "max": 100,
      "step": 1
    },
    {
      "id": "selectedYear",
      "label": "Year to inspect",
      "type": "number",
      "required": true,
      "defaultValue": 1,
      "min": 1,
      "max": 100,
      "step": 1
    }
  ],
  "outputs": [
    {
      "id": "selectedYearDepreciation",
      "label": "Selected-year depreciation",
      "format": "currency",
      "primary": true
    },
    {
      "id": "sumOfYears",
      "label": "Sum-of-years denominator",
      "format": "integer"
    },
    {
      "id": "totalDepreciation",
      "label": "Total depreciation",
      "format": "currency"
    },
    {
      "id": "endingBookValue",
      "label": "Ending book value",
      "format": "currency"
    }
  ],
  "formula": {
    "expression": "year k depreciation = (cost − salvage) × (life − k + 1) ÷ [life(life+1)/2]"
  },
  "examples": [
    {
      "label": "Reproducible default-input example (not a personal recommendation)",
      "inputs": {
        "cost": 50000,
        "salvageValue": 5000,
        "usefulLife": 8,
        "selectedYear": 1
      }
    }
  ],
  "sources": []
}