---
title: "Calculate vehicle loan payments"
method: GET
path: "/payments/{vin}"
tags: ["Valuation"]
---

# Calculate vehicle loan payments

`GET /payments/{vin}`

Calculate monthly payment schedule for a vehicle loan based on price, down payment, loan term, and interest rate.

## Path parameters

- `vin` string, required

## Query parameters

- `price` number, required
- `downPayment` number, required
- `loanTerm` integer, required
- `interestRate` number, required

## Response `200`

Payment calculation result

- PaymentsResponse
  - `vin` string, required
  - `payments` object[], required
    - `amount` number
    - `currency` string
    - `frequency` 'one-time' | 'monthly'
    - `type` 'down-payment' | 'loan'
    - `description` string, nullable
    - `dueDate` string, nullable — Payment due date (YYYY-MM-DD)
  - `loanAmount` number, required — Total loan amount after down payment
  - `totalPaid` number, required — Total amount to be paid over loan term
  - `totalInterest` number, required — Total interest paid
  - `monthlyPayment` number, required — Monthly payment amount
  - `currency` string, required

## Other responses

- `400` — Missing or invalid parameters
- `403` — Invalid or missing API key, suspended account, or inactive subscription
- `429` — Monthly quota exhausted or per-minute rate limit exceeded. Quota responses carry resetDate; rate-limit responses carry a Retry-After header.

## Changes

- **2026-08-10** `cf1d4e12baca` — 6 info
  - added the non-success response with the status `403`
  - added the non-success response with the status `429`
  - removed the non-success response with the status `401`
  - added the optional property `code` to the response with the `400` status
  - …2 more

[Change history](https://skmtc.dev/carapi/apis/carapi-dev-automotive-data-api/changes/payments/:vin/get.md)

---

[API](https://skmtc.dev/carapi/apis/carapi-dev-automotive-data-api.md) · [All operations](https://skmtc.dev/carapi/apis/carapi-dev-automotive-data-api/llms.txt) · [OpenAPI document](https://skmtc-service-production.skmtc.workers.dev/v1/apis/carapi/carapi-dev-automotive-data-api/revisions/cf1d4e12baca/schema)