Loan Calculator API

Loan Payment Calculator is a simple tool for calculating loan payments. It returns the monthly payment, total interest, and more.

The Loan Calculator API provides a simple, reliable way to integrate loan calculator functionality into your applications. Built for developers who need production-ready loan calculator capabilities without the complexity of building from scratch.

View API Details →

Available on:

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Quick Start

Using JavaScript

async function callLoanCalculatorAPI() {
    try {
        const requestBody = {
    "loanAmount": 32000,
    "interestRate": 8.5,
    "loanTerm": 6
};

        const response = await fetch('https://api.apiverve.com/v1/loanpaymentcalculator', {
            method: 'POST',
            headers: {
                'x-api-key': 'YOUR_API_KEY_HERE',
                'Content-Type': 'application/json'
            },
            body: JSON.stringify(requestBody)
        });

        const data = await response.json();
        console.log(data);
    } catch (error) {
        console.error('Error:', error);
    }
}

callLoanCalculatorAPI();

Using cURL

curl -X POST "https://api.apiverve.com/v1/loanpaymentcalculator" \
  -H "x-api-key: YOUR_API_KEY_HERE" \
  -H "Content-Type: application/json" \
  -d '{
    "loanAmount": 32000,
    "interestRate": 8.5,
    "loanTerm": 6
}'

Get your API key: https://apiverve.com

📁 For more examples, see the examples folder

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Installation

Choose your preferred programming language:

📦 NPM (JavaScript/Node.js)

npm install @apiverve/loanpaymentcalculator

View NPM Package → | Package Code →

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🔷 NuGet (.NET/C#)

dotnet add package APIVerve.API.LoanCalculator

View NuGet Package → | Package Code →

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🐍 Python (PyPI)

pip install apiverve-loanpaymentcalculator

View PyPI Package → | Package Code →

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💎 Ruby (RubyGems)

gem install apiverve_loanpaymentcalculator

View RubyGems Package → | Package Code →

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🐘 PHP (Packagist)

composer require apiverve/loanpaymentcalculator

View Packagist Package → | Package Code →

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🎯 Dart (pub.dev)

dart pub add apiverve_loanpaymentcalculator

View pub.dev Package → | Package Code →

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🤖 Android (JitPack)

implementation 'com.github.apiverve:loanpaymentcalculator-api:1.0.0'

Package Code →

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🐹 Go

go get github.com/apiverve/loanpaymentcalculator-api/go

Package Code →

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Why Use This API?

Feature	Benefit
Multi-language SDKs	Native packages for JavaScript, Python, C#, Go, and Android
Simple Integration	Single API key authentication, consistent response format
Production Ready	99.9% uptime SLA, served from 24 global regions
Comprehensive Docs	Full examples, OpenAPI spec, and dedicated support

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Documentation

• 🏠 API Home: Loan Calculator API
• 📚 API Reference: docs.apiverve.com/ref/loanpaymentcalculator
• 📖 OpenAPI Spec: openapi.yaml
• 💡 Examples: examples/

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What Can You Build?

The Loan Calculator API is commonly used for:

• Web Applications - Add loan calculator features to your frontend or backend
• Mobile Apps - Native SDKs for Android development
• Automation - Integrate with n8n, Zapier, or custom workflows
• SaaS Products - Enhance your product with loan calculator capabilities
• Data Pipelines - Process and analyze data at scale

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API Reference

Authentication

All requests require an API key in the header:

x-api-key: YOUR_API_KEY_HERE

Get your API key: https://apiverve.com

Response Format

Every APIVerve endpoint returns the same envelope — check status, then read data:

{
  "status": "ok",
  "error": null,
  "data": { ... }
}

Example Response

A real response from the Loan Calculator API:

{
  "status": "ok",
  "error": null,
  "data": {
    "loanAmount": 32000,
    "downpayment": 0,
    "interestRate": 8.5,
    "loanTerm": 6,
    "monthly_payment": 568.91,
    "total_interest_paid": 8961.4,
    "total_payment": 40961.52,
    "interestRatio": 21.88,
    "formatted": {
      "loanAmount": "$32,000.00",
      "monthlyPayment": "$568.91",
      "totalInterestPaid": "$8,961.40",
      "totalPayment": "$40,961.52"
    },
    "amortization_schedule": [
      {
        "month": 1,
        "interest_payment": 226.67,
        "principal_payment": 342.24,
        "remaining_balance": 31657.76
      },
      {
        "month": 2,
        "interest_payment": 224.24,
        "principal_payment": 344.67,
        "remaining_balance": 31313.09
      },
      {
        "month": 3,
        "interest_payment": 221.8,
        "principal_payment": 347.11,
        "remaining_balance": 30965.99
      }
    ]
  }
}

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Support & Community

• 🏠 API Home: Loan Calculator API
• 💬 Support: https://apiverve.com/contact
• 🐛 Issues: GitHub Issues
• 📖 Documentation: https://docs.apiverve.com
• 🌐 Website: https://apiverve.com

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Contributing

We welcome contributions! Please see CONTRIBUTING.md for guidelines.

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Security

For security concerns, please review our Security Policy.

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License

This project is licensed under the MIT License - see the LICENSE file for details.

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Acknowledgments

Built with ❤️ by APIVerve

Copyright © 2026 APIVerve. All rights reserved.