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BOE-A-2026-11063 ·22 May 2026 ·Act critical
Administrative

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

The Bank of Spain resolution publishes the euro exchange rates effective May 21, 2026, set by the European Central Bank, which now have official status (Art. 36 of Law 46/1998). This enables all economic actors to use the new rates in financial operations, contracts, or tax declarations. The rates are published officially and considered valid from the day of publication.

In 3 key points

  1. Official exchange rates are updated whenever the ECB publishes new rates (Art. 36 Law 46/1998) (art. 36 Ley 46/1998)
  2. 1 euro = 1.1599 US dollars (official rate from 21/05/2026) (cambio 1 euro = 1,1599 dólares USA)
  3. Rates are considered official from the date of their publication in the BOE (art. 36 Ley 46/1998)

How it affects those involved

Traders, companies, and individuals engaged in international transactions must update their exchange rate calculations from the date of publication. Tax authorities and banks may use these rates to adjust tax returns and payments. Financial advisors must review their calculations and communicate the new rates to their clients. Errors in using outdated rates may lead to discrepancies in declarations or payments.

Lifecycle

2026-05-22PublishedPublished in the BOE
2026-05-22Into 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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