Bulgarian National Bank Exchange Rate API

Official Bulgarian National Bank rates for 10 Sept 2026: 1 EUR = 1.1616 USD, 1 EUR = 0.85915 GBP. All 29 currencies published, history back to 2016. Free JSON API for tax, audits, and compliant invoicing.

Bulgaria flagBulgarian National Bank official daily exchange rates as JSON: 29 currencies against the EUR, history back to 2016. Latest table on every plan. Get your API key.

About Bulgarian National Bank

The Bulgarian National Bank, founded in 1879, is one of the world's oldest central banks. Following Bulgaria's adoption of the euro, it publishes euro-denominated reference rates for around 30 currencies each business day.

Quick start

One request for the pair you need — EUR to USD at the official Bulgarian National Bank rate:

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

Or the bank's full published table:

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

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

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

Latest published rates (2026-09-10)

Below is the current table from Bulgarian National Bank, unmodified — what a call to /latest returns right now, with values quoted per 1 EUR (ECB convention):

Download this table: Excel (.xlsx) CSV

Download history:
Choose currencies: USD
Excel (.xlsx) CSV

One row per currency per publication date. Up to one year per download. Billed as one API call per currency per month of data.

BaseQuoteTypeRate
EUR AUD reference 1.6167
EUR BRL reference 5.9528
EUR CAD reference 1.6049
EUR CHF reference 0.9432
EUR CNY reference 7.79
EUR CZK reference 24.251
EUR DKK reference 7.4751
EUR GBP reference 0.85915
EUR HKD reference 9.1083
EUR HUF reference 364.75
EUR IDR reference 20414.13
EUR ILS reference 3.5198
EUR INR reference 110.8645
EUR ISK reference 140
EUR JPY reference 179.09
EUR KRW reference 1560.96
EUR MXN reference 19.6816
EUR MYR reference 4.7225
EUR NOK reference 10.7635
EUR NZD reference 1.994
EUR PHP reference 72.688
EUR PLN reference 4.322
EUR RON reference 5.2525
EUR SEK reference 11.1995
EUR SGD reference 1.4711
EUR THB reference 38.327
EUR TRY reference 56.3316
EUR USD reference 1.1616
EUR ZAR reference 18.7559

Node.js / TypeScript client

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

npm install bnb-exchange-rate
import { getRate } from 'bnb-exchange-rate';

const pair = await getRate('EUR', '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.

Full reference — installation, all four functions, response shapes, error codes: bnb-exchange-rate documentation.

Why use the official Bulgarian National Bank rate?

When an auditor or tax office in Bulgaria asks which rate you used, "the EUR mid-market rate at 14:32" is not an answer — the official rate published by Bulgarian National Bank for that date is. This API returns exactly those published figures, stamped with the bank's own rate_date; on weekends and holidays the most recent published table is returned, as compliance rules expect.

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

Endpoints

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 published table locally makes a small quota go far.

Frequently asked questions

Is there an API for Bulgarian National Bank exchange rates?

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

How often does Bulgarian National Bank update its rates?

New tables land once per business day — the API picks each one up shortly after Bulgarian National Bank publishes it (latest: 2026-09-10).

Is this the official published table?

Yes — the rows are Bulgarian National Bank's published figures, untouched, with the original publication date attached. Pairs the bank didn't print are computed and flagged derived.

Bulgarian National Bank rates, one API key

Latest table on every plan. History back to 2016 on paid plans. No credit card to start.

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