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BOE-A-2026-7191 ·28 March 2026 ·Act critical
Administrative

Businesses and individuals: 3-month window to update official exchange rates to avoid discrepancies

The Bank of Spain Resolution publishes the new euro exchange rates effective from 27 March 2026, which are considered official under Article 36 of Law 46/1998. These rates must be incorporated into the financial and operational calculations of businesses and individuals conducting international transactions. Updating these rates is mandatory to maintain calculation accuracy and prevent discrepancies in transaction values.

In 2 key points

  1. Official exchange rates will be updated on 27 March 2026 with immediate effect (Art. 36 Law 46/1998) (art. 36 Ley 46/1998)
  2. The new exchange rates must be used in international financial transactions (Art. 1) (art. 1)

How it affects those involved

Companies engaged in international operations must update their currency conversion calculations to avoid errors in invoicing, payments, or interest rates. Individuals making foreign currency purchases or investments must also use the new official exchange rates. Financial advisors should review their reports and adjust their recommendations. While the Bank of Spain does not impose penalties, discrepancies may lead to errors in calculating profits or losses.

Lifecycle

2026-03-28PublishedPublished in the BOE
2026-03-27Into forceComes into force (art. 36 Ley 46/1998)
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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