Government Schemes APIWeb Calculator UI
Free Retirement & FIRE Target Corpus Calculator API (2026)
API for computing early retirement (FIRE) target corpus based on post-retirement living expenses.
Interactive API Playground & Live Test
GET
/api/v1/retirementQuery Parameters
Current age in years
Target retirement age
Current monthly living expense in ₹
Annual inflation rate % (default: 6)
Annual return % before retirement (default: 12)
Safe withdrawal rate % (default: 4)
Retirement savings already built in ₹ (default: 0)
curl -X GET "https://fincalculator.in/api/v1/retirement?currentAge=30&retirementAge=55&monthlyExpense=50000&inflationRate=6&preReturn=12&withdrawalRate=4¤tSavings=0" \
-H "Accept: application/json"Live JSON Response (HTTP 200 OK)
Click "Execute Live API Request" below...Request Parameters Schema
| Parameter | Type | Required | Description / Notes |
|---|---|---|---|
| currentAge | number | Required | Current age in years |
| retirementAge | number | Required | Target retirement age |
| monthlyExpense | number | Required | Current monthly living expense in ₹ |
| inflationRate | number | Optional | Annual inflation rate % (default: 6) |
| preReturn | number | Optional | Annual return % before retirement (default: 12) |
| withdrawalRate | number | Optional | Safe withdrawal rate % (default: 4) |
| currentSavings | number | Optional | Retirement savings already built in ₹ (default: 0) |
Related Government Schemes APIs
Frequently Asked Questions (FAQs)
Is the Free Retirement & FIRE Target Corpus Calculator API free to use in production apps?
Yes! All FinCalculator REST APIs are completely free, zero-auth, open-CORS, and edge-cached for high performance across global web and mobile applications.
What is the rate limit for /api/v1/retirement?
Endpoints are cached at the edge for 24 hours. There are no restrictive rate limits for standard web traffic and mobile applications.