2025-11-17
Added · Updated
The document notifies institutions subject to minimum reserves in Portugal of the deadline dates for reporting minimum reserve amounts for 2026, distinguishing between monthly and quarterly reporting schedules. It also provides the specific calendar dates for the maintenance periods of minimum reserves for 2026, which were published by the European Central Bank in April 2025. These notification dates and maintenance period calendars are available on the Bank of Portugal's official website.
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Circular Letter No. CC/2025/00000031
Mod. 40000375/T – 01/14
Subject: Circular Letter on notification dates and calendars of minimum reserve maintenance periods for the year 2026
This Circular Letter serves to inform institutions subject to minimum reserves in Portugal about the deadline dates for notification of the minimum reserve amounts to be complied with by each institution during the minimum reserve maintenance periods for the year 2026 (Table 1 for monthly reporting and Table 2 for quarterly reporting), in accordance with Article 7(6) of the Regulation of 22 January 2021 on the application of the European Central Bank (ECB/2021/1) minimum reserve regime.
Institutions are additionally informed of the calendar dates for the minimum reserve maintenance periods for the year 2026 (Table 3), in accordance with Article 8(2) of the aforementioned Regulation. These calendars were published by the European Central Bank in its communications of 24 April 2025.
The Bank of Portugal publishes the notification dates and the calendars of the minimum reserve maintenance periods on its institutional website (https://www.bportugal.pt/page/instrumentos-pol-mon).
The Markets Department is available to provide any additional clarifications.
Table 1 – Minimum reserve notification dates for 2026 (monthly reporting)
Mod. 40000375/T – 01/14
Table 2 - Minimum reserve notification dates for 2026 (quarterly reporting)
Table 3 - Calendar of minimum reserve maintenance periods for 2026
Table 4 - Calendar of minimum reserve maintenance periods for 2025
| ECB Council Meeting | Start of maintenance period | End of maintenance period | Base for institutions submitting monthly statements | Base for institutions submitting quarterly statements | Duration of maintenance period (days) |
|---|---|---|---|---|---|
| 5 February 2026 | 11 February 2026 | 24 March 2026 | December 2025 | September 2025 | 42 |
| 19 March 2026 | 25 March 2026 | 5 May 2026 | January 2026 | December 2025 | 42 |
| 30 April 2026 | 6 May 2026 | 16 June 2026 | March 2026 | December 2025 | 42 |
| 11 June 2026 | 17 June 2026 | 28 July 2026 | April 2026 | March 2026 | 42 |
| 23 July 2026 | 29 July 2026 | 15 September 2026 | May 2026 | March 2026 | 49 |
| 10 September 2026 | 16 September 2026 | 3 November 2026 | July 2026 | June 2026 | 49 |
| 29 October 2026 | 4 November 2026 | 22 December 2026 | September 2026 | June 2026 | 49 |
| 17 December 2026 | 23 December 2026 | To be confirmed | October 2026 | September 2026 | To be confirmed |
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Source: Banco de Portugal — original document · Summary generated with machine assistance and reviewed before publication; the authoritative text is the regulator's original document. How RegAlert works
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