Bank of Mauritius Exchange Rate API: Official MUR Rates as JSON

The Bank of Mauritius publishes the official exchange rates that accounting, tax, and customs rules in Mauritius reference — published official rates, not moving market prices. This guide shows how to pull them as JSON: via a REST endpoint or the zero-dependency bmu-exchange-rate npm package.

What the Bank of Mauritius publishes

• Consolidated indicative TT buying and selling rates for 12 currencies, from the morning survey of Mauritian banks.
• Daily publication each business morning, Port Louis time.
• The bank's own publication date on every response, so a rate is always citable.
• No gaps to trip over — weekends and Mauritian holidays resolve to the most recent published rates and are flagged explicitly.

Mauritius is the Indian Ocean's financial hub, and the Bank of Mauritius consolidated table is the reference its offshore sector, auditors and tax practice cite for rupee conversion.

Why official rates, not market rates

A live mid-market feed answers "what is USD/MUR trading at right now?" — the right tool for checkouts and dashboards. But accountants, auditors, and tax authorities ask a different question: "which rate were you required to use for this date?" That answer comes from the Bank of Mauritius's published rates, and it never changes after publication.

Get the latest rates (REST)

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

The response is the bank's most recent published data — every rate and the publication date. The latest rates are available on every plan, including the free tier (300 requests/month, no credit card).

The npm SDK

npm install bmu-exchange-rate

import { getRate, getLatestRates } from 'bmu-exchange-rate';

// One pair at the official Bank of Mauritius rate
const pair = await getRate('USD', 'MUR', { apiKey: 'art_live_...' });
console.log(pair.rate, pair.rate_date);

// The bank's full published table
const table = await getLatestRates({ apiKey: 'art_live_...' });
console.log(table.rate_date, table.rates.length);

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

Historical rates for an invoice date

import { getRatesForDate, getHistory } from 'bmu-exchange-rate';

// The official rates for an invoice date — non-publication days return
// the most recent published date, flagged via published_on_requested_date.
const day = await getRatesForDate('2026-06-30', { apiKey: 'art_live_...' });

// Time series for one pair
const series = await getHistory(
  { source: 'USD', target: 'MUR', from: '2026-01-01' },
  { apiKey: 'art_live_...' }
);

Historical dates and time series need a paid plan; the latest rates stay free.

Published vs derived pairs

If the Bank of Mauritius does not print a pair directly, the API resolves it from the bank's published rates — an inverse, or a cross rate via MUR — and flags it derived: true with the method used. Official and computed values are never silently mixed, which is exactly the distinction an auditor will ask about.

A fresh official series

The bank publishes no machine-readable archive, so our series accumulates from August 2026 forward — every business day's consolidated table, stored with its publication date and growing into the historical record Mauritian filings will cite.

FAQ

Does the Bank of Mauritius have an official exchange rate API?

The Bank of Mauritius publishes its official rates on its own site, and AllRatesToday serves the same published rates as clean JSON via REST or the bmu-exchange-rate npm package. The latest table is free.

How often do Bank of Mauritius rates update?

Each business morning, as TT buying and selling rates consolidated from the banking system. These are indicative official rates, not live market prices; every response carries the publication date.

Can I get the Bank of Mauritius rate for a past date, like an invoice date?

Yes. The /central-bank/bmu/rates-for-date endpoint returns the official rates for any archived date. Non-publication days resolve to the most recent published date and are flagged, so your audit trail stays honest. Historical dates require a paid plan; latest rates are free.