COMMISSION IMPLEMENTING REGULATION (EU) 2025/1182

of 17 June 2025

establishing detailed rules on the rescaling of harmonised indices to the common index reference period 2025 pursuant to Regulation (EU) 2016/792 of the European Parliament and of the Council

(Text with EEA relevance)

THE EUROPEAN COMMISSION,

Having regard to the Treaty on the Functioning of the European Union,

Having regard to Regulation (EU) 2016/792 of the European Parliament and of the Council of 11 May 2016 on harmonised indices of consumer prices and the house price index, and repealing Council Regulation (EC) No 2494/95 (1), and in particular Article 5(6) thereof,

Whereas:

(1) Regulation (EU) 2016/792 lays down a common framework for the development, production and dissemination of the following harmonised indices: the harmonised index of consumer prices (HICP), the harmonised index of consumer prices at constant tax rates (HICP-CT), the owner-occupied housing (OOH) price index and the house price index (HPI).

(2) Article 5(5) of Regulation (EU) 2016/792 establishes 2015 as the common index reference period for the harmonised indices. Article 5(6) of that Regulation specifies that the harmonised indices and their subindices are to be rescaled to a new common index reference period every 10 years after the latest rescaling, starting from 2015. It is therefore necessary to define the detailed rules for that rescaling.

(3) The rescaling of the already transmitted data to the Commission (Eurostat) requires the division of the full time series of harmonised indices and their subindices corresponding to the previous common index reference period by a rescaling factor. Member States should calculate the rescaling factors and transmit them to the Commission (Eurostat) which should rescale the existing time series.

(4) Commission Delegated Regulation (EU) 2024/3159 (2) introduced changes in the compilation of the HICP and HICP-CT regarding the classification of consumption and the inclusion of games of chance that apply to the transmission of these indices to the Commission (Eurostat) from the reference month of January 2026. For reasons of cost-effectiveness and to ensure that these changes do not impose a significant additional burden on Member States, it would be appropriate that this Regulation is applied simultaneously with the changes introduced by Delegated Regulation (EU) 2024/3159.

(5) The measures set out in this Regulation are in accordance with the opinion of the European Statistical System Committee,

HAS ADOPTED THIS REGULATION:

Article 1

New common index reference period

1. The new common index reference period for the harmonised indices referred to in Article 1 of Regulation (EU) 2016/792 and their subindices shall be 2025.

2. Member States shall apply the new common index reference period for the harmonised indices and subindices, including any data revisions, transmitted to the Commission (Eurostat):

(a) for monthly indices, starting with the index for January 2026 and onwards;

(b) for quarterly indices, starting with the index for the first quarter of 2026 and onwards.

Article 2

Rescaling the harmonised indices already transmitted to the Commission (Eurostat)

1. Member States shall calculate rescaling factors with a precision of at least six decimal places for each of the harmonised indices and their subindices according to the following formula:

(a) for monthly indices:

[Bild bitte in Originalquelle ansehen]

(b) for quarterly indices:

[Bild bitte in Originalquelle ansehen]

where:

[Bild bitte in Originalquelle ansehen]

is a chained Laspeyres-type index for month

of year 2025, with 2015 = 100 as the index reference period;

[Bild bitte in Originalquelle ansehen]

is a chained Laspeyres-type index for quarter

of year 2025, with 2015 = 100 as the index reference period.

2. The full time series of the harmonised indices and their subindices, including any revised data, shall be rescaled to the new common index reference period using the rescaling factors referred to in paragraph 1.

3. Member States shall transmit the calculated rescaling factors to the Commission (Eurostat):

(a) no later than 21 January 2026, for the monthly indices;

(b) no later than 30 April 2026, for the quarterly indices.

4. The Commission (Eurostat) shall use the rescaling factors referred to in paragraph 3 to rescale the full time series of harmonised indices and their subindices previously transmitted by the Member States.

5. In the event of a revision of the harmonised indices and subindices for any reference period of the year 2025 that takes place after the dates indicated in paragraph 3, the Member States shall transmit to the Commission (Eurostat) the updated rescaling factors together with the revised full time series based on 2025 = 100 without unjustified delay.

Article 3

Entry into force

This Regulation shall enter into force on the twentieth day following that of its publication in the

Official Journal of the European Union

This Regulation shall be binding in its entirety and directly applicable in all Member States.

Done at Brussels, 17 June 2025.

For the Commission

The President

Ursula VON DER LEYEN

(1)

OJ L 135, 24.5.2016, p. 11

ELI: http://data.europa.eu/eli/reg/2016/792/oj

(2) Commission Delegated Regulation (EU) 2024/3159 of 2 September 2024 amending Regulation (EU) 2016/792 of the European Parliament and of the Council on harmonised indices of consumer prices and the house price index as regards the classification of consumption and the inclusion of games of chance (

OJ L, 2024/3159, 20.12.2024, ELI: http://data.europa.eu/eli/reg_del/2024/3159/oj

ELI: http://data.europa.eu/eli/reg_impl/2025/1182/oj

ISSN 1977-0677 (electronic edition)