{
  "id": "mortgage-amortization-calculator",
  "version": "20.1.0",
  "name": "Mortgage Amortization Calculator",
  "shortName": "Mortgage Amortization",
  "description": "View the complete amortization schedule for your mortgage.",
  "category": "Finance",
  "categorySlug": "finance",
  "keywords": [
    "mortgage",
    "amortization"
  ],
  "status": "live",
  "workStatus": "pending",
  "reviewStatus": "pending",
  "migrationStatus": "migrated",
  "migratedDate": "2026-08-18",
  "engine": "legacy-react",
  "creator": null,
  "reviewer": null,
  "quality": {
    "availability": "live",
    "technicalReviewRecord": "/reviews/mortgage-amortization-calculator.json",
    "qualifiedReview": "pending",
    "qualifiedReviewer": null,
    "qualifiedReviewDate": null,
    "formulaVersion": "20.1.0",
    "referenceCoverage": "references-listed",
    "releaseTestScope": "Flagship reference cases are specified in scripts/test-v20-1.mjs; consult release evidence for executed results.",
    "historicalMetadataDate": "2026-08-18",
    "historicalMetadataNotice": "The imported date is not evidence of a completed human review."
  },
  "urls": {
    "page": "/calculator/mortgage-amortization-calculator/",
    "definition": "/calculator/mortgage-amortization-calculator/definition.json",
    "schema": "/calculator/mortgage-amortization-calculator/schema.json",
    "llms": "/calculator/mortgage-amortization-calculator/llms.txt",
    "legacyDefinition": "/calculator/mortgage-amortization-calculator.json"
  },
  "queryExample": "https://askcalculators.com/calculator/mortgage-amortization-calculator/?loanAmount=300000&interestRate=4.5&loanTerm=30",
  "queryParameters": {
    "loanAmount": {
      "label": "Loan Amount ($)",
      "type": "number",
      "required": false,
      "default": 300000
    },
    "interestRate": {
      "label": "Interest Rate (%)",
      "type": "number",
      "required": false,
      "default": 4.5
    },
    "loanTerm": {
      "label": "Loan Term (Years)",
      "type": "number",
      "required": false,
      "default": 30
    }
  },
  "inputs": [
    {
      "id": "loanAmount",
      "label": "Loan Amount ($)",
      "type": "number",
      "defaultValue": 300000
    },
    {
      "id": "interestRate",
      "label": "Interest Rate (%)",
      "type": "number",
      "defaultValue": 4.5
    },
    {
      "id": "loanTerm",
      "label": "Loan Term (Years)",
      "type": "number",
      "defaultValue": 30
    }
  ],
  "outputs": [
    {
      "id": "scheduledPayment",
      "label": "Scheduled payment",
      "format": "currency",
      "primary": true
    },
    {
      "id": "totalInterest",
      "label": "Total interest",
      "format": "currency"
    },
    {
      "id": "rowCount",
      "label": "Payment count",
      "format": "number"
    },
    {
      "id": "lastBalance",
      "label": "Final balance",
      "format": "currency"
    }
  ],
  "formula": {
    "expression": "Payment = P ÷ n when the monthly rate is zero; otherwise P·r ÷ [1 − (1+r)^(−n)]. Each row applies interest = balance × r and principal = payment − interest; the last payment is limited to the amount due."
  },
  "examples": [
    {
      "label": "Reproducible default-input example (not a personal recommendation)",
      "inputs": {
        "loanAmount": 300000,
        "interestRate": 4.5,
        "loanTerm": 30
      }
    }
  ],
  "sources": [
    {
      "label": "CFPB: how paying down a mortgage works",
      "url": "https://www.consumerfinance.gov/ask-cfpb/how-does-paying-down-a-mortgage-work-en-1943/"
    }
  ]
}