Banco Central de Bolivia Exchange Rate API: Official BOB Rates as JSON

The Banco Central de Bolivia publishes the official exchange rates that accounting, tax, and customs practice in Bolivia 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 banco-central-de-bolivia-exchange-rate npm package.

A peg that finally moved

From 2011 the boliviano was held at 6.96 to the dollar — fifteen years of a flat official line. In 2026 the bank moved the official rate, and the tipo de cambio oficial (TCO) now trades well above the old peg. That makes the official series — the one Bolivian filings, customs valuations and audits must cite — newly consequential, and the archive records both eras. The BCB publishes its table every calendar day, weekends included.

Why official rates, not market rates

A live mid-market feed answers "what is USD/BOB 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 Banco Central de Bolivia’s published rates, and it never changes after publication.

Get the latest rates (REST)

curl "https://allratestoday.com/api/v1/central-bank/bcbol/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 banco-central-de-bolivia-exchange-rate

import { getRate, getLatestRates } from 'banco-central-de-bolivia-exchange-rate';

// One pair at the official rate
const pair = await getRate('USD', 'BOB', { 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 'banco-central-de-bolivia-exchange-rate';

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

const series = await getHistory(
  { source: 'USD', target: 'BOB', 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 Banco Central de Bolivia does not print a pair directly, the API resolves it from the bank's published rates — an inverse, or a cross via BOB — 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 archive is loaded from 2016 — a decade of the 6.96 peg, then the 2026 break that ended it.

FAQ

Does the Banco Central de Bolivia 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 banco-central-de-bolivia-exchange-rate npm package. The latest table is free.

How do I get the official Bolivia 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.

What happened to the 6.96 peg?

The BCB moved the official rate in 2026 after fifteen years of the fixed parity. The archived series shows the flat 6.96 era and the adjustment — exactly the record an audit of boliviano-denominated accounts needs.