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BOE-A-2026-7110 ·27 March 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 26 March 2026, established by the ECB, which now have official effect under Article 36 of Law 46/1998. These rates supersede previous ones and must be used for financial transactions, contracts, and tax returns. This change affects all users of exchange rates within the Spanish monetary system.

In 3 key points

  1. Official exchange rates are updated daily according to the ECB (Art. 36 Law 46/1998) (art. 36 Ley 46/1998)
  2. 1 euro = 1.1539 US dollars (official rate for 26/03/2026) (cambio 1 euro = 1,1539 dólares USA)
  3. All financial transactions must use the new official rates from the date of publication (art. 36 Ley 46/1998)

How it affects those involved

Businesses, individuals, and public administrations conducting international transactions must update their exchange rate calculations from the date of publication. Financial advisors and account managers should review their procedures to ensure accuracy in declarations and payments. Errors in using outdated rates may lead to fines or tax discrepancies. Companies operating in foreign currencies must verify their records and adjust their balance sheets.

Lifecycle

2026-03-27PublishedPublished in the BOE
2026-03-27Into forceComes into force (Resolución de 26 de marzo 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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