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BOE-A-2026-2720 ·5 February 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 4 February 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 sectors using the euro as a unit of measurement in international transactions.

In 2 key points

  1. Official exchange rates are updated daily according to the ECB (Art. 36 of Law 46/1998) (art. 36 Ley 46/1998)
  2. The new rates apply from 4 February 2026 (date of publication) (fecha de publicación: 4 de febrero de 2026)

How it affects those involved

Traders, companies, and individuals conducting international operations must update their exchange rate calculations to avoid errors in pricing, payments, or costs. Financial institutions must review their internal systems to reflect the new rates. Financial advisors and accountants should inform their clients of the update. While there is no direct penalty, errors may lead to financial losses or contractual disputes.

Lifecycle

2026-02-05PublishedPublished in the BOE
2026-02-04Into forceComes into force (fecha de publicación: 4 de febrero de 2026)
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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