Calculators

Net operating income (NOI) API

NOI = effective gross income (rent net of vacancy + other income) − operating expenses, excluding debt service, with vacancy loss and expense ratio broken out. Answers 'NOI of this rental', 'effective gross income after 5% vacancy', 'operating expense ratio on this property'.

Price$0.01per request

MethodPOST

Route/v1/calc/re-noi

StatusLive

MIME typeapplication/json

Rate limit120/minute

CacheNo cache

real-estatenoiincomevacancyopexrentalfinancecalc

API URLhttps://x402.hexl.dev/v1/calc/re-noi

Integration docs

Example request

{
  "monthlyRent": 2500,
  "vacancyPct": 5,
  "monthlyOpEx": 800
}

Example response

{
  "grossPotentialIncome": 30000,
  "vacancyLoss": 1500,
  "effectiveGrossIncome": 28500,
  "operatingExpenses": 9600,
  "noi": 18900,
  "monthlyNoi": 1575,
  "expenseRatioPct": 33.68
}

Input schema

{
  "type": "object",
  "required": [
    "monthlyRent"
  ],
  "properties": {
    "monthlyRent": {
      "type": "number",
      "examples": [
        2500
      ]
    },
    "otherMonthlyIncome": {
      "type": "number",
      "default": 0
    },
    "vacancyPct": {
      "type": "number",
      "default": 5
    },
    "monthlyOpEx": {
      "type": "number",
      "examples": [
        800
      ]
    },
    "annualOpEx": {
      "type": "number",
      "default": 0
    }
  }
}

Output schema

{
  "type": "object",
  "additionalProperties": true
}