Date: 2025-10-13Category: Not ApplicableState: Union GovernmentCountry: Europe
Decision (EU) 2025/2015 of the European Central Bank of 23 September 2025 on transitional provisions for the application of minimum reserves by the European Central Bank following the introduction of the euro in Bulgaria (ECB/2025/33)
**Executive Summary**
This is Decision (EU) 2025/2015 of the European Central Bank (ECB/2025/33), issued on September 23, 2025, addressing transitional provisions for minimum reserve requirements following Bulgaria's adoption of the euro on January 1, 2026. It outlines specific obligations for institutions in Bulgaria and other Member States. The decision takes effect upon notification and applies from November 1, 2025.
**Key Points / Main Content**
* **Definitions**: Adopts definitions from Regulation (EU) 2021/378 (ECB/2021/1) and defines “tail institution”.
* **Transitional Period for Bulgarian Institutions:**
* A transitional maintenance period for institutions in Bulgaria, excluding tail institutions, will run from January 1 to February 10, 2026.
* The reserve base for these institutions will be based on their balance sheet as of October 31, 2025.
* The Bulgarian National Bank (Българска народна банка) will request institutions in Bulgaria to report their reserve base.
* The reserve base for tail institutions will be based on their balance sheet as of September 30, 2025.
* The Bulgarian National Bank will request tail institutions in Bulgaria to calculate the reserve base based on their balance sheets as of September 30, 2025.
* Institutions and the Bulgarian National Bank must calculate and confirm minimum reserves by December 19, 2025.
* Allows institutions located in Bulgaria to deduct liabilities owed to other institutions in Bulgaria from their reserve bases.
* **Provisions for Institutions in other Member States whose currency is the euro:**
* The existing maintenance period for these institutions remains unaffected.
* These institutions can deduct liabilities owed to institutions located in Bulgaria from their reserve base for specified maintenance periods.
* If liabilities are deducted, these institutions must calculate minimum reserves on the basis of their balance sheets as at 31 October 2025 and 31 December 2025 respectively.
* For the maintenance periods starting in December 2025 and February 2026, tail institutions must calculate their minimum reserves on the basis of their balance sheet as at 30 September 2025.
* For the maintenance periods starting in March and May 2026, tail institutions must calculate their minimum reserves on the basis of their balance sheet as at 31 December 2025.
* **Statistical Reporting**:
* Institutions must report statistical information per Regulation (EU) 2021/379 (ECB/2021/2).
* Institutions in Bulgaria are to be shown as already subject to the ECB's minimum reserve system.
* **Applicability of other Regulations**:
* In the absence of specific provisions in this Decision, the provisions of Regulations (EU) 2021/378 (ECB/2021/1) and (EU) 2021/379 (ECB/2021/2) shall apply.
**Impact Analysis**
**Българска народна банка (Bulgarian National Bank)**
* **Impact**: Responsible for requesting and verifying reserve base calculations from institutions in Bulgaria.
* **Action Required**: Request balance sheet data from institutions, verify their calculations of the reserve base and minimum reserves, and confirm the amounts with the institutions.
**Institutions Located in Bulgaria**
* **Impact**: Subject to new transitional maintenance period and calculation requirements.
* **Action Required**: Calculate and report their reserve base and minimum reserves to the Bulgarian National Bank, and confirm the amounts with the Bulgarian National Bank.
**Institutions Located in other Member States whose currency is the euro**
* **Impact**: May choose to deduct liabilities owed to Bulgarian institutions from their reserve base.
* **Action Required**: If choosing to deduct liabilities, recalculate minimum reserves and report statistical information accordingly.
Key Entities Referenced
Regulation (EU) 2021/378 (ECB/2021/1): Regulation of the European Central Bank on the application of minimum reserve requirements.
Regulation (EU) 2021/379 (ECB/2021/2): Regulation of the European Central Bank on the balance sheet items of credit institutions and of the monetary financial institutions sector.
European Central Bank (ECB): Central bank of the European Union, issuing this decision to facilitate Bulgaria's adoption of the euro.
Bulgaria: Country adopting the euro, necessitating transitional provisions for minimum reserve requirements.
Българска народна банка (Bulgarian National Bank): The National Bank of Bulgaria that calculates minimum reserves for institutions located in Bulgaria.
Official Journal EN
of the European Union L series
2025/2015 13.10.2025
DECISION(EU) 2025/2015 OF THE EUROPEAN CENTRAL BANK
of 23 September 2025
on transitional provisions for the application of minimum reserves by the European Central Bank
following the introduction of the euro in Bulgaria (ECB/2025/33)
THE EXECUTIVE BOARD OF THE EUROPEAN CENTRAL BANK,
Having regard to the Statute of the European System of Central Banks and of the European Central Bank, and in particular
Article 19.1 and Article 46.2, first indent, thereof,
Having regard to Council Regulation (EC) No 2531/98 of 23 November 1998 concerning the application of minimum
reserves by the European Central Bank(1),
Having regard to Council Regulation (EC) No 2532/98 of 23 November 1998 concerning the powers of the European
Central Bank to impose sanctions(2),
Having regard to Council Regulation (EC) No 2533/98 of 23 November 1998 concerning the collection of statistical
information by the European Central Bank(3), and in particular Articles 5(1) and 6(4) thereof,
Having regard to Regulation (EU) 2021/378 of the European Central Bank of 22 January 2021 on the application of
minimum reserve requirements (ECB/2021/1)(4),
Having regard to Regulation (EU) 2021/379 of the European Central Bank of 22 January 2021 on the balance sheet items
of credit institutions and of the monetary financial institutions sector (ECB/2021/2)(5),
Whereas:
(1) The adoption of the euro by Bulgaria on 1 January 2026 means that institutions located in Bulgaria will be subject to
minimum reserve requirements from that date in accordance with Regulation (EU) 2021/378 (ECB/2021/1).
(2) The integration of these entities into the minimum reserve system of the Eurosystem requires the adoption of
transitional provisions in order to ensure their smooth integration without creating a disproportionate burden for
credit institutions in Member States whose currency is the euro, including Bulgaria.
(3) Article 5 of the Statute of the European System of Central Banks and of the European Central Bank implies that the
ECB, assisted by the national central banks, collects the necessary statistical information from the competent
national authorities or directly from economic agents also to ensure timely preparation in the field of statistics in
view of the adoption of the euro by a Member State,
(1) OJ L 318, 27.11.1998, p. 1, ELI: http://data.europa.eu/eli/reg/1998/2531/oj.
(2) OJ L 318, 27.11.1998, p. 4, ELI: http://data.europa.eu/eli/reg/1998/2532/oj.
(3) OJ L 318, 27.11.1998, p. 8, ELI: http://data.europa.eu/eli/reg/1998/2533/oj.
(4) OJ L 73, 3.3.2021, p. 1, ELI: http://data.europa.eu/eli/reg/2021/378/oj.
(5) OJ L 73, 3.3.2021, p. 16, ELI: http://data.europa.eu/eli/reg/2021/379/oj.
ELI: http://data.europa.eu/eli/dec/2025/2015/oj 1/4EN
OJ L, 13.10.2025
HAS ADOPTED THIS DECISION:
Article 1
Definitions
For the purposes of this Decision:
(a) the definitions in Article 2 of Regulation (EU) 2021/378 (ECB/2021/1) apply;
(b) ‘tail institution’ means tail institution as defined in Article 2, point (17), of Regulation (EU) 2021/379 (ECB/2021/2).
Article 2
Transitional provisions for institutions located in Bulgaria
1. In derogation from Article 8 of Regulation (EU) 2021/378 (ECB/2021/1), a transitional maintenance period shall run
from 1 January to 10 February 2026 for institutions located in Bulgaria.
2. The reserve base of each institution located in Bulgaria, excluding tail institutions, for the transitional maintenance
period shall be defined in relation to its balance sheet as at 31 October 2025. Българска народна банка (Bulgarian National
Bank) shall request institutions located in Bulgaria to report their reserve base in accordance with Regulation
(EU) 2021/379 (ECB/2021/2).
3. The reserve base of each tail institution located in Bulgaria shall be defined in relation to its balance sheet as at
30 September 2025. Българска народна банка (Bulgarian National Bank) shall request tail institutions located in Bulgaria to
calculate the reserve base for the transitional maintenance period on the basis of their balance sheets as at 30 September
2025.
4. In respect of the transitional maintenance period, either an institution located in Bulgaria or Българска народна банка
(Bulgarian National Bank) shall calculate such institution’s minimum reserves. The party that calculates the minimum
reserves shall submit its calculation to the other party allowing sufficient time for the latter to verify it and submit
revisions. The calculated minimum reserves, including any revisions thereof, shall be confirmed by the two parties at the
latest on 19 December 2025. If the notified party does not confirm the amount of minimum reserves by 19 December
2025, it shall be deemed to have acknowledged that the calculated amount applies for the transitional maintenance period.
5. Article 3(2) to (4) shall apply mutatis mutandis to institutions located in Bulgaria so that these institutions may, for
their initial maintenance periods, deduct from their reserve bases any liabilities owed to institutions in Bulgaria, although
at the time the minimum reserves are calculated such institutions will not appear on the list of institutions subject to
minimum reserve requirements referred to in Article 3(3) of Regulation (EU) 2021/378 (ECB/2021/1).
Article 3
Transitional provisions for institutions located in other Member States whose currency is the euro
1. The maintenance period applicable to institutions located in other Member States whose currency is the euro
pursuant to Article 8 of Regulation (EU) 2021/378 (ECB/2021/1) shall remain unaffected by the transitional maintenance
period for institutions located in Bulgaria as provided for in Article 2(1).
2/4 ELI: http://data.europa.eu/eli/dec/2025/2015/ojEN
OJ L, 13.10.2025
2. Institutions located in other Member States whose currency is the euro may decide to deduct from their reserve base
for the maintenance periods from 23 December 2025 to 10 February 2026 and from 11 February to 24 March 2026 any
liabilities owed to institutions located in Bulgaria, although at the time the minimum reserves are calculated such
institutions will not appear on the list of institutions subject to minimum reserve requirements referred to in Article 3(3)
of Regulation (EU) 2021/378 (ECB/2021/1).
3. Institutions located in other Member States whose currency is the euro that decide to deduct liabilities owed to
institutions located in Bulgaria pursuant to paragraph 2 shall, for the maintenance periods from 23 December 2025 to
10 February 2026 and from 11 February to 24 March 2026, calculate their minimum reserves on the basis of their
balance sheets as at 31 October 2025 and 31 December 2025 respectively and report statistical information in accordance
with Part 1 of Annex III to Regulation (EU) 2021/379 (ECB/2021/2) showing institutions located in Bulgaria as already
subject to the ECB’s minimum reserve system.
This shall be without prejudice to the obligation for institutions to report statistical information for the periods concerned
in accordance with Table 1 in Part 2 of Annex I to Regulation (EU) 2021/379 (ECB/2021/2), still showing institutions
located in Bulgaria as being banks located in the ‘Rest of the world’.
The tables shall be reported in accordance with the time limits and procedures laid down in Regulation (EU) 2021/379
(ECB/2021/2).
4. For the maintenance periods starting in December 2025 and February 2026, tail institutions located in other
Member States whose currency is the euro that decide to deduct liabilities owed to institutions located in Bulgaria pursuant
to paragraph 2 shall calculate their minimum reserves on the basis of their balance sheet as at 30 September 2025 and
report statistical information in accordance with Part 1 of Annex III to Regulation (EU) 2021/379 (ECB/2021/2) showing
institutions located in Bulgaria as already subject to the ECB’s minimum reserve system.
For the maintenance periods starting in March and May 2026, tail institutions located in other Member States whose
currency is the euro that decide to deduct liabilities owed to institutions located in Bulgaria pursuant to paragraph 2 shall
calculate their minimum reserves on the basis of their balance sheet as at 31 December 2025, and report statistical
information in accordance with Part 1 of Annex III to Regulation (EU) 2021/379 (ECB/2021/2) showing institutions
located in Bulgaria as already subject to the ECB’s minimum reserve system.
This shall be without prejudice to the obligation for institutions to report statistical information for the periods concerned
in accordance with Table 1 in Part 2 of Annex I to Regulation (EU) 2021/379 (ECB/2021/2) still showing institutions
located in Bulgaria as being banks located in the ‘Rest of the world’.
The statistical information shall be reported in accordance with the time limits and procedures laid down in Regulation
(EU) 2021/379 (ECB/2021/2).
Article 4
Final provisions
1. This Decision shall take effect on the day of its notification to the addressees.
2. It shall apply from 1 November 2025.
3. In the absence of specific provisions in this Decision, the provisions of Regulations (EU) 2021/378 (ECB/2021/1) and
(EU) 2021/379 (ECB/2021/2) shall apply.
ELI: http://data.europa.eu/eli/dec/2025/2015/oj 3/4EN
OJ L, 13.10.2025
Article 5
Addressees
This Decision is addressed to Българска народна банка (Bulgarian National Bank), institutions located in Bulgaria and
institutions located in other Member States whose currency is the euro.
Done at Frankfurt am Main, 23 September 2025.
The President of the ECB
Christine LAGARDE
4/4 ELI: http://data.europa.eu/eli/dec/2025/2015/oj