Investment APIWeb Calculator UI
Free Recurring Deposit (RD) Calculator API (2026)
Public API for bank and post office recurring deposit maturity calculations.
Interactive API Playground & Live Test
GET
/api/v1/compoundingQuery Parameters
Monthly deposit in ₹
Annual RD interest rate %
Tenure in years
monthly | quarterly | yearly. Banks and the post office compound RDs quarterly; pass quarterly to match the RD calculator (default: same as the deposit frequency)
curl -X GET "https://fincalculator.in/api/v1/compounding?contribution=5000&rate=7&years=3&compounding=quarterly" \
-H "Accept: application/json"Live JSON Response (HTTP 200 OK)
Click "Execute Live API Request" below...Request Parameters Schema
| Parameter | Type | Required | Description / Notes |
|---|---|---|---|
| contribution | number | Required | Monthly deposit in ₹ |
| rate | number | Required | Annual RD interest rate % |
| years | number | Required | Tenure in years |
| compounding | string | Optional | monthly | quarterly | yearly. Banks and the post office compound RDs quarterly; pass quarterly to match the RD calculator (default: same as the deposit frequency) |
Related Investment APIs
Frequently Asked Questions (FAQs)
Is the Free Recurring Deposit (RD) 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/compounding?
Endpoints are cached at the edge for 24 hours. There are no restrictive rate limits for standard web traffic and mobile applications.