Bank of Guyana Exchange Rate API: Official GYD Rates as JSON

The Bank of Guyana publishes the official exchange rates that accounting, tax, and customs practice in Guyana 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 bank-of-guyana-exchange-rate npm package.

The total-market rate, from the bank itself

The Bank of Guyana licenses the bank cambios that make up the Guyanese foreign-exchange market and publishes the total-market buying, selling and mid rates for the US dollar aggregated from their reports. That aggregate is the official record of where the market actually traded — the number a reconciliation or audit in Guyana can stand on.

Why official rates, not market rates

A live mid-market feed answers "what is USD/GYD 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 Guyana’s published rates, and it never changes after publication.

Get the latest rates (REST)

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

The response is the bank's most recent published table — 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 bank-of-guyana-exchange-rate

import { getRate, getLatestRates } from 'bank-of-guyana-exchange-rate';

// One pair at the official rate
const pair = await getRate('USD', 'GYD', { 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 'bank-of-guyana-exchange-rate';

const day = await getRatesForDate('2026-08-18', { apiKey: 'art_live_...' });

const series = await getHistory(
  { source: 'USD', target: 'GYD', 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 Guyana does not print a pair directly, the API resolves it from the bank's published rates — an inverse, or a cross via GYD — 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.

The archive

The bank publishes its report roughly weekly and overwrites it in place, keeping no public archive — so ours builds forward from August 2026, preserving each report’s dated rates as they appear.

FAQ

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

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

How do I get the official Guyana exchange rate for a past date?

The rates-for-date endpoint returns the official table for any archived date; non-publication days resolve to the most recent published date and are flagged, so audit trails stay honest. Historical dates require a paid plan; latest rates are free.

Why does the rate update weekly rather than daily?

The Bank of Guyana refreshes its published market report roughly once a week, with the daily figures inside lagging a day or two. The API serves each report’s own dates, so the audit trail matches what the bank actually published.