Reserve Bank of New Zealand Exchange Rate API

Official Reserve Bank of New Zealand (New Zealand) daily exchange rates as JSON: 17 currencies, history back to 2018. The published NZD rates required for tax, audits, and compliant invoicing.

Reserve Bank of New Zealand official daily exchange rates as JSON: 17 currencies against the NZD, history back to 2018. Latest table on every plan. Get your API key.

About Reserve Bank of New Zealand

The Reserve Bank of New Zealand publishes daily wholesale exchange rates for the New Zealand dollar against 18 currencies (its B1 statistical series), alongside the trade-weighted index, each business day at around 3pm New Zealand time.

• Official website: www.rbnz.govt.nz
• Official rate publication: B1 — exchange rates and TWI

Quick start

One request for the pair you need — NZD to USD at the official Reserve Bank of New Zealand rate:

curl "https://allratestoday.com/api/v1/central-bank/rbnz/latest?source=NZD&target=USD" \
  -H "Authorization: Bearer art_live_your_key"

Or the bank's full published table:

curl "https://allratestoday.com/api/v1/central-bank/rbnz/latest" \
  -H "Authorization: Bearer art_live_your_key"

On paid plans, any historical date or a daily time series:

curl "https://allratestoday.com/api/v1/central-bank/rbnz/history?source=NZD&target=USD&from=2025-01-01" \
  -H "Authorization: Bearer art_live_your_key"

Node.js / TypeScript client

A dedicated zero-dependency npm package wraps these endpoints — rbnz-exchange-rate:

npm install rbnz-exchange-rate

import { getRate } from 'rbnz-exchange-rate';

const pair = await getRate('NZD', 'USD', { apiKey: 'art_live_...' });
console.log(pair.rate, pair.rate_date);

Zero dependencies, TypeScript types included, and it runs anywhere fetch exists — Node 18+, Bun, Deno, and edge runtimes.

Why use the official Reserve Bank of New Zealand rate?

Live market rates move continuously, but tax filings, customs declarations, audits, and statutory accounting in New Zealand and beyond typically require the official rate published by Reserve Bank of New Zealand for a given date — a fixed, citable number that never changes after publication. This API serves those published tables with the bank's own rate_date on every response; weekends and holidays return the most recent published date, which is the rate compliance rules require you to apply.

Pairs the bank doesn't print directly are resolved from its table (inverse or cross via NZD) and explicitly flagged "derived": true — so what the bank printed and what was computed are never confused.

Endpoints

• GET /api/v1/central-bank/rbnz/latest — latest table or single pair (all plans)
• GET /api/v1/central-bank/rbnz/{YYYY-MM-DD} — the table for any date (paid plans)
• GET /api/v1/central-bank/rbnz/history — daily time series, up to 5,000 rows (paid plans)
• GET /api/v1/central-bank/rbnz/availability — publication calendar: the dates the bank actually published (all plans)

Full parameter reference in the API documentation. Every request counts toward your plan's monthly quota — rates change once per business day, so caching a day's table locally makes a small quota go far.

Frequently asked questions

Is there an API for Reserve Bank of New Zealand exchange rates?

Yes — this one. Official daily NZD rates as clean JSON, latest table on every plan including free.

How often are the rates updated?

Reserve Bank of New Zealand publishes once per business day; the API ingests each new table shortly after publication.

Are these the official rates?

Yes — ingested from Reserve Bank of New Zealand's own published data, served unmodified with the bank's publication date. Anything computed rather than published is flagged derived.

Other central banks

All covered central banksCoverage, endpoints, and plans US Federal Reserve (H.10)United States — official USD rates Bank of EnglandUnited Kingdom — official GBP rates People's Bank of China (CFETS)China — official CNY rates Reserve Bank of AustraliaAustralia — official AUD rates Bank of RussiaRussia — official RUB rates Central Bank of TürkiyeTürkiye — official TRY rates Banco Central do Brasil (PTAX)Brazil — official BRL rates Bank IndonesiaIndonesia — official IDR rates Reserve Bank of IndiaIndia — official INR rates Bank of CanadaCanada — official CAD rates Bank Negara MalaysiaMalaysia — official MYR rates Central Bank of Sri LankaSri Lanka — official LKR rates Czech National BankCzech Republic — official CZK rates European Central BankEurozone — official EUR rates Narodowy Bank PolskiPoland — official PLN rates Norges BankNorway — official NOK rates Sveriges RiksbankSweden — official SEK rates Central Bank of NigeriaNigeria — official NGN rates Central Bank of KuwaitKuwait — official KWD rates Central Bank of BahrainBahrain — official BHD rates Central Bank of AzerbaijanAzerbaijan — official AZN rates Central Bank of Bosnia and HerzegovinaBosnia and Herzegovina — official BAM rates Bulgarian National BankBulgaria — official EUR rates Central Reserve Bank of PeruPeru — official PEN rates Bank of JapanJapan — official JPY rates Hong Kong Monetary AuthorityHong Kong — official HKD rates Bank of IsraelIsrael — official ILS rates Central Bank of ArgentinaArgentina — official ARS rates South African Reserve BankSouth Africa — official ZAR rates Swiss National BankSwitzerland — official CHF rates