The Ledgerage REST API

{
  "standard": "ASC_842",
  "commencementDate": "2026-01-01",
  "termMonths": 60,
  "paymentAmount": 5000,
  "paymentFrequency": "monthly",
  "paymentTiming": "advance",
  "discountRateAnnual": 0.07
}

curl https://ledgerage.com/api/v1/compute \
  -H "Authorization: Bearer sk_live_..." \
  -H "Content-Type: application/json" \
  -d '{
  "standard": "ASC_842",
  "commencementDate": "2026-01-01",
  "termMonths": 60,
  "paymentAmount": 5000,
  "paymentFrequency": "monthly",
  "paymentTiming": "advance",
  "discountRateAnnual": 0.07
}'

{
  "input": { /* the lease you sent, normalized */ },
  "result": {
    "standard": "ASC_842",
    "classification": "operating",
    "commencementDate": "2026-01-01",
    "termMonths": 60,
    "periods": 60,
    "periodicRate": 0.0058333,
    "initialLiability": 253982.94,
    "initialRouAsset": 253982.94,
    "totalUndiscountedPayments": 300000,
    "totalLeaseCost": 300000,
    "schedule": [
      {
        "period": 1,
        "date": "2026-01-01",
        "payment": 5000,
        "interest": 1452.4,
        "principal": 3547.6,
        "liabilityClose": 250435.34,
        "rouAmortization": 3547.6,
        "rouAssetClose": 250435.34,
        "leaseExpense": 5000
      }
      /* … 60 periods, liability reconciled to exactly 0.00 */
    ],
    "disclosures": {
      "weightedAverageRemainingTermMonths": 60,
      "weightedAverageDiscountRate": 0.07,
      "totalUndiscountedPayments": 300000,
      "imputedInterest": 46017.06,
      "maturityAnalysis": [
        { "year": 1, "label": "Year 1", "undiscountedPayments": 60000 }
        /* … Year 2 … Year 5, then "Thereafter" for longer terms */
      ],
      "currentLiability": 43963.93,
      "longTermLiability": 210019.01,
      "totalLeaseCost": 300000
    },
    "citations": [
      "ASC 842-20-30-1 — initial measurement of the lease liability at the present value of lease payments.",
      "ASC 842-20-30-5 — the right-of-use asset comprises the initial liability, prepaid lease payments and initial direct costs, less lease incentives received."
      /* … full citation list */
    ],
    "notes": [
      "Discount rate applied as a nominal monthly rate: 7.000% ÷ periods-per-year.",
      "Payments treated as made in advance (annuity-due): each period's payment is applied before interest accretes."
    ]
  },
  "classification": {
    "classification": "operating",
    "standard": "ASC_842",
    "single_model": false,
    "criteria": [
      {
        "key": "transfer_of_ownership",
        "label": "Transfer of ownership",
        "met": false,
        "detail": "No transfer of ownership at the end of the term.",
        "citation": "ASC 842-10-25-2(a)"
      }
      /* … five criteria in total */
    ],
    "rationale": "Classified as an OPERATING lease under ASC 842 because none of the five finance-lease criteria are met. The lessee still recognises a right-of-use asset and lease liability, but total lease cost is expensed on a straight-line basis."
  },
  "journalEntries": [
    {
      "date": "2026-01-01",
      "memo": "Initial recognition of lease (ROU asset and lease liability)",
      "lines": [
        { "account": "Right-of-use asset", "debit": 253982.94, "credit": 0 },
        { "account": "Lease liability", "debit": 0, "credit": 253982.94 }
      ]
    }
    /* … one balanced entry per period */
  ],
  "request_id": "req_1a2b3c4d5e6f7a8b9c0d1e2f",
  "replay": false
}

{
  "standard": "ASC_842",
  "classification": "operating",
  "initialLiability": 253982.94,
  "initialRouAsset": 253982.94,
  "periods": 60,
  "schedule": [
    {
      "period": 1,
      "date": "2026-01-01",
      "payment": 5000,
      "interest": 1452.4,
      "principal": 3547.6,
      "liabilityClose": 250435.34,
      "rouAmortization": 3547.6,
      "rouAssetClose": 250435.34,
      "leaseExpense": 5000
    }
    /* … one row per period */
  ],
  "request_id": "req_…",
  "replay": false
}

{
  "standard": "ASC_842",
  "classification": "operating",
  "journalEntries": [
    {
      "date": "2026-01-01",
      "memo": "Initial recognition of lease (ROU asset and lease liability)",
      "lines": [
        { "account": "Right-of-use asset", "debit": 253982.94, "credit": 0 },
        { "account": "Lease liability", "debit": 0, "credit": 253982.94 }
      ]
    },
    {
      "date": "2026-01-01",
      "memo": "Period 1 — operating lease",
      "lines": [
        { "account": "Lease expense", "debit": 5000, "credit": 0 },
        { "account": "Cash", "debit": 0, "credit": 5000 },
        { "account": "Lease liability", "debit": 3547.6, "credit": 0 },
        { "account": "Right-of-use asset", "debit": 0, "credit": 3547.6 }
      ]
    }
    /* … one balanced entry per period. A finance lease instead posts separate
       interest expense and straight-line amortization entries. */
  ],
  "request_id": "req_…",
  "replay": false
}

{
  "classification": "operating",
  "standard": "ASC_842",
  "single_model": false,
  "criteria": [
    {
      "key": "transfer_of_ownership",
      "label": "Transfer of ownership",
      "met": false,
      "detail": "The lease does not transfer ownership by the end of the term.",
      "citation": "ASC 842-10-25-2(a)"
    },
    {
      "key": "purchase_option",
      "label": "Reasonably certain purchase option",
      "met": false,
      "detail": "No purchase option the lessee is reasonably certain to exercise.",
      "citation": "ASC 842-10-25-2(b)"
    }
    /* … five criteria: economic life, fair value, specialized asset */
  ],
  "rationale": "No finance-lease criterion is met, so the lease is operating.",
  "request_id": "req_…",
  "replay": false
}