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Tools.Town
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Loan EMI Calculator API

Calculate monthly loan EMI, total interest payable, and full amortisation schedule for any loan.

Category: Finance Endpoint: /v1/finance/emi-calculator Method: GET Auth: API Key

Fast & Accurate

Get precise results instantly.

Easy Integration

Simple REST API with JSON response.

Developer Friendly

Clear docs and SDK examples.

Free to Start

1,000 free requests/month.

Endpoint

All requests should be made to the following endpoint:

GEThttps://api.tools.town/v1/finance/emi-calculator

Authentication

This endpoint requires an API Key. Include your API key in the request header.

Authorization: Bearer YOUR_API_KEY
You can get your API key from your dashboard.

Request Parameters

Send a GET request with query parameters.

ParameterTypeRequiredDescriptionExample
principalnumberPrincipal must be greater than zero.500000
annualRatenumberRate cannot be negative.8.5
tenureMonthsnumberTenure must be at least 1 month.60

Example Request

curl -G "https://api.tools.town/v1/finance/emi-calculator" \
  -H "Authorization: Bearer YOUR_API_KEY" \
  --data-urlencode "principal=500000" \
  --data-urlencode "annualRate=8.5" \
  --data-urlencode "tenureMonths=60"

Example Response 200 OK

application/json
{
  "success": true,
  "data": {
    "emi": "0",
    "totalPayment": "0",
    "totalInterest": "0",
    "principal": "0",
    "annualRate": "0",
    "tenureMonths": "0",
    "monthlyRate": "0"
  }
}

Error Codes

CodeMeaning
400Bad Request — missing or invalid parameter
401Unauthorized — API key missing or invalid
429Rate limit exceeded — free tier: 1,000 requests/month
500Internal Server Error — try again or contact support