FindBSB API

Free JSON API for Australian BSB number lookups. No API key required. No signup.

Base URL: https://findbsb.com.au/api

→ Full documentation · BSB Lookup Tool · RapidAPI

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Endpoints

Method	Endpoint	Description
GET	/api/bsb/{bsb}	Single BSB lookup
GET	/api/bsb?bank=ANZ&state=NSW	Filter by bank, state, suburb, postcode
POST	/api/validate	Bulk validate up to 500 BSBs

Quick Start

# Single lookup
curl https://findbsb.com.au/api/bsb/062-000

# Filter
curl "https://findbsb.com.au/api/bsb?bank=ANZ&state=NSW&limit=5"

# Bulk validate
curl -X POST https://findbsb.com.au/api/validate \
  -H "Content-Type: application/json" \
  -d '{"bsbs": ["062-000", "012-003", "999-999"]}'

Response

{
  "bsb": "062-000",
  "mnemonic": "CBA",
  "bank": "Commonwealth Bank of Australia",
  "branch": "48 Martin Place Sydney",
  "address": "48 Martin Place",
  "suburb": "Sydney",
  "state": "NSW",
  "postcode": "2000",
  "payments": ["paper", "electronic", "cash"],
  "closed": false
}

Examples

Language	File
Python	examples/python.py
JavaScript	examples/javascript.js
PHP	examples/php.php

Rate Limits

• 30 requests per minute per IP
• 500 BSBs per validate request
• Free, no auth required

Data Source

BSB data sourced from AusPayNet and updated on the first business day of each month.

License

MIT