---
title: "Mortgage Payoff Calculator"
method: GET
path: "/api/calc/mortgage-payoff-calculator"
tags: ["Finance"]
---

# Mortgage Payoff Calculator

`GET /api/calc/mortgage-payoff-calculator`

## Request

- Base URL: `https://calcbright.com`
- URL: `https://calcbright.com/api/calc/mortgage-payoff-calculator`
- Auth: none declared

$200 a month extra on a $250,000, 6.5% loan saves $64,927 and 5½ years. Model extra payments, a lump sum or biweekly in this mortgage payoff calculator.

## Query parameters

- `balance` number: Current loan balance
- `currency` 'USD' | 'EUR' | 'GBP' | 'JPY' | 'CAD' | 'AUD' | 'CHF' | 'CNY' | 'INR' | 'PKR' | 'AED' | 'SAR' | 'NZD' | 'SGD' | 'HKD' | 'SEK' | 'NOK' | 'DKK' | 'PLN' | 'TRY' | 'ZAR' | 'BRL' | 'MXN' | 'KRW' | 'THB' | 'MYR' | 'IDR' | 'PHP' | 'BDT' | 'EGP' | 'NGN' | 'KWD' | 'QAR' | 'BHD' | 'OMR' | 'RUB': Currency
- `rate` number: Interest rate (%)
- `start` string, date: Next payment date (YYYY-MM-DD)
- `years` number: Remaining term (years)
- `extraMonths` number: plus months (months)
- `extra` number: Extra payment / month
- `biweekly` 'no' | 'yes': Biweekly payments
- `lump` number: One-time lump sum
- `lumpMonth` number: Paid with payment #

## Response `200`

Calculation result

- CalcOutput
  - `ok` boolean
  - `tool` string
  - `name` string
  - `url` string: Open this link to see the full calculation
  - `inputs` object
  - `summary` string: Plain-text answer
  - `details` string
  - `result` object
  - `errors` object

## Other responses

- `400`: Invalid input (see errors)

---

[API](https://skmtc.dev/calcbright/apis/calcbright-calculator-api.md) · [All operations](https://skmtc.dev/calcbright/apis/calcbright-calculator-api/llms.txt) · [OpenAPI document](https://skmtc.dev/calcbright/apis/calcbright-calculator-api/revisions/f58229e56e58?raw)