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BOE-A-2026-382 ·6 January 2026 ·Act critical
Administrative

Businesses and individuals: 3 months to update official exchange rates or face deviation risk

The Bank of Spain Resolution publishes the official euro exchange rates for 5 January 2026, in accordance with ECB data, and establishes that these rates shall have official effect pursuant to Law 46/1998 (Art. 36). This change affects all sectors using official exchange rates for financial or commercial transactions. The published rates supersede previous ones and must be adopted by financial institutions and traders for official calculations.

In 2 key points

  1. 1 euro = 1.1664 US dollars (Art. 36 Law 46/1998) (art. 36 Ley 46/1998)
  2. All exchange rates published by the ECB shall have official effect from 5 January 2026 (art. 36 Ley 46/1998)

How it affects those involved

Businesses and individuals conducting international transactions must update their exchange rate calculations following the new official publication. Financial institutions must adjust their internal systems to reflect the new rates. Financial and trade advisors should inform their clients of the update. The risk of errors in calculations or pricing increases if the new rates are not adopted in a timely manner.

Lifecycle

2026-01-06PublishedPublished in the BOE
2026-01-05Into 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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