Auto Loan Calculator API

POST https://api.findutils.com/api/tools/auto-loan-calculator/execute

Return the monthly car payment, total interest, financed amount, and a month-by-month amortization schedule for an auto loan. Accounts for down payment, trade-in value, and sales tax (optionally financed). Rate is a yearly percentage.

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Request body

application/json

vehicle_price

number required

Vehicle purchase price before tax.
interest_rate

number required

Yearly interest rate in percent (6.5 = 6.5%). Must be > 0.
loan_term_months

integer required

Loan term in months (for example 36, 48, 60, 72, 84).
down_payment

number optional

Cash down payment. Default: 0.
trade_in_value

number optional

Trade-in value credited against the price. Default: 0.
sales_tax

number optional

Sales tax rate in percent applied to the vehicle price. Default: 0.
include_tax_in_loan

boolean optional

Finance the sales tax in the loan. Default: true.

Example arguments

Verified

{
  "vehicle_price": 35000,
  "down_payment": 5000,
  "trade_in_value": 0,
  "interest_rate": 6.5,
  "loan_term_months": 60,
  "sales_tax": 8,
  "include_tax_in_loan": true
}

curl -X POST https://api.findutils.com/api/tools/auto-loan-calculator/execute \
  -H "Content-Type: application/json" \
  -d '{
    "vehicle_price": 35000,
    "down_payment": 5000,
    "trade_in_value": 0,
    "interest_rate": 6.5,
    "loan_term_months": 60,
    "sales_tax": 8,
    "include_tax_in_loan": true
  }'

const response = await fetch('https://api.findutils.com/api/tools/auto-loan-calculator/execute', {
  method: 'POST',
  headers: { 'Content-Type': 'application/json' },
  body: JSON.stringify({"vehicle_price":35000,"down_payment":5000,"trade_in_value":0,"interest_rate":6.5,"loan_term_months":60,"sales_tax":8,"include_tax_in_loan":true}),
});
const data = await response.json();

import requests

response = requests.post(
    "https://api.findutils.com/api/tools/auto-loan-calculator/execute",
    json={"vehicle_price":35000,"down_payment":5000,"trade_in_value":0,"interest_rate":6.5,"loan_term_months":60,"sales_tax":8,"include_tax_in_loan":True},
)
data = response.json()

$ch = curl_init('https://api.findutils.com/api/tools/auto-loan-calculator/execute');
curl_setopt_array($ch, [
    CURLOPT_POST => true,
    CURLOPT_HTTPHEADER => ['Content-Type: application/json'],
    CURLOPT_POSTFIELDS => '{"vehicle_price":35000,"down_payment":5000,"trade_in_value":0,"interest_rate":6.5,"loan_term_months":60,"sales_tax":8,"include_tax_in_loan":true}',
    CURLOPT_RETURNTRANSFER => true,
]);
$data = json_decode(curl_exec($ch), true);

Also an MCP tool

Call auto_loan_calculator from Claude, Cursor or any MCP client. Same arguments, same output.

https://mcp.findutils.com

MCP reference

Rate limit: 60 a minute, per IP
Auth: None
REST id: auto-loan-calculator
MCP name: auto_loan_calculator
Category: Finance
Machine-readable: openapi.json · markdown.md

Request body

Example arguments

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