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BOE-A-2026-6538 ·20 March 2026 ·Resolution Low impact
Administrative

Businesses and individuals: 1 month to update official exchange rates in financial records

The Bank of Spain publishes official exchange rates for the euro as of March 19, 2026, in accordance with Article 36 of Law 46/1998. These rates replace previous ones and must be incorporated into financial records and international transactions. The change affects all users conducting foreign exchange operations, especially in current accounts, international payments, or invoicing. The rates are fixed and cannot be modified by the Bank of Spain prior to official publication.

In 2 key points

  1. The official exchange rates are published on 19 March 2026 and must be applied immediately in financial records (art. 36 Ley 46/1998)
  2. The change affects all foreign exchange operations, including international invoicing and payments (art. 36 Ley 46/1998)

How it affects those involved

For businesses and individuals carrying out international operations, it is mandatory to update their financial records with the new exchange rates to avoid errors in payments, invoices, or profit calculations. Public authorities and financial institutions must check their internal systems to ensure the accuracy of calculations. Advisors and accountants should review their invoicing and auditing procedures to ensure the correct use of the new rates. Errors in implementation may result in fines or disputes during audits.

Lifecycle

2026-03-20PublishedPublished in the BOE
2026-03-20Into forceComes into force (art. 36 Ley 46/1998)
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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