---
title: "Westpac Exchange Rate API: AUD Buy and Sell Rates as JSON"
description: "Westpac's telegraphic transfer buy / sell rates for 23 currencies against the Australian dollar, read hourly from the bank's own page and served as JSON with the Reserve Bank of Australia official rate alongside. REST, JavaScript and Python examples."
canonical: https://allratestoday.com/blog/westpac-exchange-rate-api/
source: AllRatesToday (https://allratestoday.com/) — Markdown mirror of the page above; index of all pages at https://allratestoday.com/llms.txt
generated: 2026-11-13T18:12:13.659Z
---

Westpac is Australia’s oldest bank, founded in 1817 as the Bank of New South Wales, and one of the country’s four major banks. Its public rates feed lists telegraphic-transfer buy and sell rates for more than 20 currencies, quoted per Australian dollar, with the time of the last update. This guide shows how to read that board as JSON: what the rates mean, how they compare with the Reserve Bank of Australia official rate, and the calls that return them.

## What the Westpac board shows

- **23 currencies against the Australian dollar**: AED, BND, CAD, CHF, CNY, DKK, EUR, FJD, GBP, HKD, JPY, NOK, NZD, PKR, SBD, SEK, SGD, THB, TOP, USD, VUV, WST and ZAR. Every value is AUD per 1 unit of the foreign currency.
- **The telegraphic transfer buy / sell pair.** Australian banks quote foreign currency per 1 Australian dollar (for example 0.65 USD per AUD); the rates here are turned round to AUD per 1 unit of each currency so they read like every other country on this site. The pair is the telegraphic-transfer board, the rate an international transfer is converted at. The Reserve Bank of Australia publishes one official rate per business day.
- **USD on 13 November 2026**: Westpac bought at 1.415 and sold at 1.5279 AUD, a spread of 7.67%. The Reserve Bank of Australia official rate was 1.4697, so the bank's mid sat +0.12% from it.
- **The bank's own timestamp.** The page prints a last-updated stamp (`08:11 AM 13 Nov 2026 (Sydney)` on the board above), returned as `bank_updated_at` next to our `captured_at`.
- **Every day's board is kept permanently, from 13 November 2026, the day collection started.** Read one past day with `?date=`, or a range for one currency with the `/history` endpoint (paid plans).

## Spreads across the board

On the 13 November 2026 board the tightest spreads were CNY (7.65%), DKK (7.65%), HKD (7.65%) and the widest SBD (14.08%), WST (13.74%), VUV (11.91%). Spread is (sell − buy) ÷ mid: what a round trip through the bank costs, before any fees. The API returns it on every row as `spread_pct`, so you can rank currencies or alert when a bank widens its board.

## Get the board (REST)

You need an API key; the [free key](https://allratestoday.com/register/) works. The full board:

```
curl "https://allratestoday.com/api/v1/bank-rates/au/westpac" \
  -H "Authorization: Bearer art_live_your_key"
```

What comes back (the 13 November 2026 board, first three rows):

```
{
  "bank": "westpac",
  "name": "Westpac",
  "country": "au",
  "quote_ccy": "AUD",
  "bank_updated_at": "08:11 AM 13 Nov 2026 (Sydney)",
  "basis": "Telegraphic transfer buy / sell",
  "captured_at": "2026-11-13T13:36:00.983Z",
  "rates": [
    {"ccy":"AED","buy":0.38519317,"sell":0.41605991,"mid":0.40062654,"spread_pct":7.705,"official":null,"vs_official_pct":null},
    {"ccy":"BND","buy":1.0993843,"sell":1.1872255,"mid":1.1433049,"spread_pct":7.683,"official":null,"vs_official_pct":null},
    {"ccy":"CAD","buy":0.99255583,"sell":1.0719263,"mid":1.0322411,"spread_pct":7.689,"official":1.0308215647871355,"vs_official_pct":0.138},
    … 20 more currencies
  ],
  "disclaimer": "…",
  "attribution": { … }
}
```

One currency, with the row fields at the top level:

```
curl "https://allratestoday.com/api/v1/bank-rates/au/westpac?ccy=USD" \
  -H "Authorization: Bearer art_live_your_key"
```

```
{
  "bank": "westpac",
  "name": "Westpac",
  "country": "au",
  "quote_ccy": "AUD",
  "bank_updated_at": "08:11 AM 13 Nov 2026 (Sydney)",
  "basis": "Telegraphic transfer buy / sell",
  "captured_at": "2026-11-13T13:36:00.983Z",
  "ccy": "USD",
  "buy": 1.4150276,
  "sell": 1.5278839,
  "mid": 1.4714558,
  "spread_pct": 7.67,
  "official": 1.4697236919459142,
  "vs_official_pct": 0.118,
  "disclaimer": "Retail buy/sell rates as displayed on each bank’s own website at capture time, quoted as home currency per 1 unit of foreign currency. Indicative only: banks change these through the day, apply them at the counter or in-app, and they are not official or reference rates. For the rate a regulation names, use the central-bank endpoints.",
  "attribution": {
    "source": "Board rates published by Westpac on its own website, collected by AllRatesToday",
    "bank_url": "https://www.westpac.com.au/personal-banking/services/travel/foreign-exchange-rates/",
    "url": "https://allratestoday.com/bank-exchange-rate-api/au/westpac/",
    "terms": "Public pages that show the rates need a visible link to allratestoday.com"
  }
}
```

The board as it stood on a past day:

```
curl "https://allratestoday.com/api/v1/bank-rates/au/westpac?date=2026-11-13" \
  -H "Authorization: Bearer art_live_your_key"
```

One currency over a date range, one row per day (paid plans; add `&format=csv`, `xml` or `xlsx` for a file):

```
curl "https://allratestoday.com/api/v1/bank-rates/au/westpac/history?ccy=USD&from=2026-11-13&to=2026-11-13" \
  -H "Authorization: Bearer art_live_your_key"
```

## JavaScript

```
npm install @allratestoday/sdk
```

```
import { AllRatesToday } from '@allratestoday/sdk';

const client = new AllRatesToday({ apiKey: 'art_live_your_key' });

// Westpac's USD row
const r = await client.bankRates('au', { bank: 'westpac', ccy: 'USD' });
console.log(`Westpac buys USD at ${r.buy}, sells at ${r.sell} AUD`);

// The board as it stood on a past day
const past = await client.bankRates('au', { bank: 'westpac', date: '2026-11-13' });
console.log(past.snapshot_date, past.rates.length);
```

## Python

```
import requests

r = requests.get(
    "https://allratestoday.com/api/v1/bank-rates/au/westpac",
    headers={"Authorization": "Bearer art_live_your_key"},
    timeout=10,
)
r.raise_for_status()
for row in r.json()["rates"]:
    print(row["ccy"], row["buy"], row["sell"], row["spread_pct"])
```

## Board rate or official rate?

The Reserve Bank of Australia rate is the one tax, accounting and customs rules in Australia name; nobody transacts at it. Westpac's board is the price a customer actually gets. The API puts both on every row: `official` is the central bank's rate for the same currency and `vs_official_pct` is how far the bank's mid sits from it. Use the board to show customers a real price, compare banks for a remittance, or keep a dated record of what the bank quoted; use the [Reserve Bank of Australia endpoint](https://allratestoday.com/central-bank-rates-api/rba/) when a rule asks for the official rate.

## FAQ

### Where do the Westpac rates come from?

From the bank's own public rates page (https://www.westpac.com.au/personal-banking/services/travel/foreign-exchange-rates/), read hourly. AllRatesToday does not change the numbers: each row is the buy and sell price Westpac shows, with the mid, the spread and the Reserve Bank of Australia rate added.

### Are these the official AUD exchange rates?

No. They are Westpac's retail prices for customers. The official rate in Australia is the Reserve Bank of Australia rate, which the API returns as `official` on each row where the central bank has one, and in full from the central-bank endpoint.

### How often is the Westpac board updated?

AllRatesToday reads the page every hour. The bank's own last-updated stamp is returned as `bank_updated_at`, so you can tell a fresh read of an unchanged board from a new board.

### Can I get Westpac rates for a past date?

Yes, from 13 November 2026 onward; every day's board is kept permanently. Add `?date=YYYY-MM-DD` for one day: the response is the board captured that day, or the nearest earlier day within five days, with `date_requested` and `snapshot_date` added. For a range, `/history?ccy=USD&from=…&to=…` returns one row per day as JSON, CSV, XML or XLSX on paid plans.

### Do I need an API key?

Yes. Commercial bank boards need an API key; any plan works, the free key included, and each call counts against the plan. Public pages or widgets that show the rates need a visible link to allratestoday.com.

## Westpac rates, as JSON

Free API key, hourly board captures, the official rate alongside.

 [Get your free API key](https://allratestoday.com/register/)

## Related

- [Westpac live board rates](https://allratestoday.com/bank-exchange-rate-api/au/westpac/)
- [All banks in Australia side by side](https://allratestoday.com/bank-exchange-rate-api/au/)
- [Reserve Bank of Australia official rates API](https://allratestoday.com/central-bank-rates-api/rba/)
- [Commercial bank rates API: every bank and country](https://allratestoday.com/bank-exchange-rate-api/)