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BOE-A-2026-1481 ·21 January 2026 ·Resolution Low impact
Administrative

Businesses and individuals: 3 months to update official exchange rates or deviation risks

The Bank of Spain's resolution publishes the euro exchange rates as of 20 January 2026 set by the ECB, now officially effective under Article 36 of Law 46/1998. These rates replace previous ones and must be used in financial transactions, contracts, and official communications. The change affects all users of foreign currencies in Spain, particularly in international payments, invoices, and interest rates.

In 3 key points

  1. Official exchange rates are updated every 20 January according to the ECB (Article 36 of Law 46/1998) (art. 36 Ley 46/1998)
  2. 1 euro = 1.1728 US dollars (official rate as of 20/01/2026) (cambio 1 euro = 1,1728 dólares USA)
  3. Exchange 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 invoices, costs or revenues. Financial institutions must incorporate the new exchange rates into their calculation systems. Finance advisors and business managers must review their reports and budgets. Using outdated exchange rates could result in losses or inaccuracies in profit or cost calculations.

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.

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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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