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BOE-A-2026-1481 ·21 January 2026 ·Act critical
Administrative

Businesses and individuals: 3 months to update official exchange rates or risk discrepancies

The Bank of Spain Resolution publishes the euro exchange rates for 20 January 2026, established by the ECB, which now have official effect (Art. 36 of Law 46/1998). These rates supersede previous ones and must be used in financial transactions, contracts, and official communications. This change affects all users of foreign currencies in Spain, particularly regarding international payments, invoicing, and interest rates.

In 3 key points

  1. Official exchange rates are updated every 20 January according to the ECB (Art. 36 Law 46/1998) (art. 36 Ley 46/1998)
  2. 1 euro = 1.1728 US dollars (official rate for 20/01/2026) (cambio 1 euro = 1,1728 dólares USA)
  3. Rates must be used in financial transactions and official contracts (art. 36 Ley 46/1998)

How it affects those involved

Businesses and individuals making international payments must update their exchange rate calculations to avoid errors in invoicing, costs, or revenue. Financial institutions must integrate the new rates into their calculation systems. Financial advisors and business managers should review their reports and budgets. Using outdated rates may lead to losses or discrepancies in the calculation of profits or costs.

Lifecycle

2026-01-21PublishedPublished in the BOE
2026-01-21Into forceComes into force (Resolución de 20 de enero de 2026, del Banco de España)
Official text Based on BOE data (boe.es). Information, not advice.

Does this provision affect you?

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This analysis is informational only and does not constitute legal advice or create a client-adviser relationship. BM Consulting.
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