Purchasing power parities (prc_ppp)

National Reference Metadata in Euro SDMX Metadata Structure (ESMS)

Compiling agency: [ES1] National Institute for Statistics (INE) (Spain)


Eurostat metadata
Reference metadata
1. Contact
2. Metadata update
3. Statistical presentation
4. Unit of measure
5. Reference Period
6. Institutional Mandate
7. Confidentiality
8. Release policy
9. Frequency of dissemination
10. Accessibility and clarity
11. Quality management
12. Relevance
13. Accuracy
14. Timeliness and punctuality
15. Coherence and comparability
16. Cost and Burden
17. Data revision
18. Statistical processing
19. Comment
Related Metadata
Annexes (including footnotes)



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1. Contact Top
1.1. Contact organisation

[ES1] National Institute for Statistics (INE) (Spain)

1.2. Contact organisation unit

Directorate for Short-Term Statistics

1.5. Contact mail address

Avenida de Manoteras 50-52 / 28050 Madrid (Spain)


2. Metadata update Top
2.1. Metadata last certified

30 January 2025

2.2. Metadata last posted

30 January 2025

2.3. Metadata last update

30 January 2025


3. Statistical presentation Top
3.1. Data description

See concept 3.1 of the Eurostat metadata file prc_ppp_esms.

3.1.1. Organisation

Organisation

The Spanish National Statistic Institute[1] (INE) is a legally independent administrative autonomous institution, with its own property and treasury, attached to the Ministry of Economy and Business through the Secretariat of State for Economy and Business.  It is governed by Law 12/1989 of 9 May, of Public Statistics Function, which regulates the Statistics which is the exclusive competence of the State, and by the Statute approved by Royal Decree 508/2001 of 11 May, modified by Royal Decree 947/2003 of 18 July, Royal Decree 759/2005, of 24 June, Royal Decree 950/2009 of 5 June and Royal Decree 176/2015 of 13 March.

The INE, from the year 2022 INE's organizational structure is made up of three governing entities (General Directorates), depending on the Presidency of the Institute. INE's organizational structure also includes six entities, all of which report to INE's Presidency and have the rank of Deputy General Directorate.

Each General Directorate is divided into Deputy General Directorates, which are divided into specific work areas.

The PPP area is structured as follows:

 

The Purchasing Power Parities (PPP) area is part of the Directorate for Short-term Statistics, which reports to the General Directorate for Economic Statistics. This Directorate, in turn, reports to the President of the NSI.

 

At the end of 2025, the PPP area had six staff members. Throughout the year, there were personnel changes, so the number of staff varied at different times. The responsibilities of the PPP staff are as follows:

  • PPP Area Head (PPP coordinator): Responsable for the salaries questionnaire, CPI data, and coordination of all work related to the PPP exercise.
  • PPP Section Head: Provides oversight of all activities connected with the PPP exercise.
  • PPP Service Head: Supervises the goods and services surveys.
  • Administration Specialist: Coordinates the pre-survey and survey phases for goods and services with the staff responsible for data collection. 
  • Two interviewers: Collect prices for goods and services surveys. These price collectors work exclusively for the PPP. For some surveys, and when the workload requires it, additional price collectors from another INE unit support the price collection process. 

In addition, INE has subcontracted the work relating to the following surveys:

  • Equipment goods survey;
  • Construction survey;

Each survey is carried out by a different private company subcontracted in accordance with Spanish Law 9/2017, of 8 November, on Public Sector Contracts. The contractors are mainly responsible for conducting the pre-survey, carrying out price collection, and performing data validation. They are also required to prepare the survey reports for Equipment Goods and Construction. INE is responsible for the quality control of all data.

All the work relating to PPP is carried out under the supervision of the Deputy Director of Short-term Statistics, who reports to the Director of Short-term Statistics.

This Inventory has been drafted in accordance with the PPP Manual and taking into account Regulation (EC) No 1445/2007 of the European Parliament and of the Council of 11 December 2007, which establishes common rules for the provision of basic information on PPP; its implementing Regulation No 193/2011 regarding the quality control system used for PPP; and Regulation No 2015/1163 concerning the list of basic headings used for PPP.

The PPP coordinator is responsible for drafting the Inventory. The chapter on National Accounts data has been prepared by the National Accounts Department. The chapter on Hospital Services has been drafted in cooperation with the Ministry of Health, and the chapters on Equipment Goods and Construction have been drafted in cooperation with the respective experts in these areas.

In most cases, staff members are assigned to more than one task and do not perform the same duties throughout all 12 months of the year. The tasks are described as follows:

  • Goods and services surveys: Six people work on the consumer price surveys. Two of them are interviewers, and the others are the inspector of price collectors, the service head, the section head, and the area head.
  • Rents, salaries, GDP expenditure weight, CPIs and other tasks: Two people are involved in these tasks: the section head and the area head. These activities are usually concentrated in the month prior to the deadline for sending the questionnaire to Eurostat.
  • Spatial adjustment coefficients: One person, the head of section, is responsible for this task. This work is carried out throughout the year to estimate the coefficients used in the two consumer price surveys. 
  • Management: This task is carried out by two people, the area head and the section head, throughout the entire year. 
  • Equipment goods and construction surveys: A company is outsourced for each survey. The contractors are responsable for the pre-survey, survey, and validation phases. The PPP coordinator collaborates in all phases of the survey and is responsible for the quality control of the data. 

The staff working in the PPP area consists of experienced price statisticians. The PPP coordinator holds a degree in mathematics and has more than ten years of professional experience.

Other INE areas that cooperate by providing information to the PPP unit:

  • Consumer Price Index (CPI) area: Responsible for preparing the consumer price index questionnaire and calculating spatial adjustment coefficients. In 2025 both areas, CPI and PPP were managed by the same person.
  • Household Budget area: Responsible for preparing the rent questionnaire and the GDP expenditure weights. In the NSI organisational chart, this area belongs to the Directorate for Social Statistics. 
  • National Accounts: This unit completes the GDP expenditure weights questionnaire. It also provides information on VAT on capital goods and tips, which is required to complete the VAT and Tips questionnaires. In the NSI organisational chart, this area belongs to the Department for National Accounts. This unit is responsible for drafting the PPP Inventory sections related to GDP expenditure weights, VAT, and tips.  

 


[1] Instituto Nacional de Estadística (INE)

3.2. Classification system

See concept 3.2 of the Eurostat metadata file prc_ppp_esms.

3.3. Coverage - sector

See concept 3.3 of the Eurostat metadata file prc_ppp_esms.

3.4. Statistical concepts and definitions

See concept 3.4 of the Eurostat metadata file prc_ppp_esms.

3.5. Statistical unit

See concept 3.5 of the Eurostat metadata file prc_ppp_esms.

3.6. Statistical population

See concept 3.6 of the Eurostat metadata file prc_ppp_esms.

3.7. Reference area

The whole country.

3.8. Coverage - Time

See concept 3.8 of the Eurostat metadata file prc_ppp_esms.

3.9. Base period

Not applicable, because PPPs (Purchasing power parities) are primarily spatial indicators.


4. Unit of measure Top

See concept 4 of the Eurostat metadata file prc_ppp_esms.


5. Reference Period Top

See concept 5 of the Eurostat metadata file prc_ppp_esms.


6. Institutional Mandate Top
6.1. Institutional Mandate - legal acts and other agreements

See concept 6.1 of the Eurostat metadata file prc_ppp_esms.

6.2. Institutional Mandate - data sharing

See concept 6.2 of the Eurostat metadata file prc_ppp_esms.


7. Confidentiality Top
7.1. Confidentiality - policy

NSI is governed by the Ley 12/1989, of 9 May 1989 of the  Public Statistics Function. Specifically, article 13 of the Law, on statistical confidentiality, provides as follows:

“Article 13.

1. Any personal data procured by statistical offices from reporting units directly or from administrative sources are protected by statistical confidentiality.

2. Personal data are defined as data on natural people or bodies corporate which enable immediate identification of the parties concerned or, by their structure, content or degree of disaggregation, lead to indirect identification of the parties concerned.

3. Statistical confidentiality binds statistical offices not to disclose personal data, whatever their origin, in any event.”

7.2. Confidentiality - data treatment

Data request

The data needed to meet Eurostat requirements relating to PPP to other public organization or private company are requested under the Spanish Statistical Law .

 

Data dissemination

No information is provided on individual prices collected in PPP goods and services surveys, because, by law, data at that level of disaggregation cannot be released.

Access rights by type of user are shown in Table 2, in accordance with the decisions made in conjunction with Eurostat:

Table 2.

  GDP, main aggregates, PPP by analytical categories, PLI, volume indices and weightings Elementary positions, PPP, PLI, volume indices and weightings; list of items Average prices Individual price observations
Eurostat Yes Yes Yes Yes
INEs, OECD Yes Yes Yes Yes
Other Commission units, government departments of Member States Yes Special access rights Special access rights No
Researchers Yes Special access rights Special access rights No
General public Yes No No No

The subcontrated companies to carry out the constrution and equipment goods surveys have access to the national average prices and to the national and extra-national prices indixes to validate the surveys. To protect the statistical confidenciality, these companies sign a document which commit them to save this confidenciality according to the rules of the Law of the Public Statistics Function.

Other people from NSI who do not work in the PPP area do not access to the PPP information.


8. Release policy Top
8.1. Release calendar

Not available

8.2. Release calendar access

Not available

8.3. Release policy - user access

Not available


9. Frequency of dissemination Top

See concept 9 of the Eurostat metadata file prc_ppp_esms.


10. Accessibility and clarity Top
10.1. Dissemination format - News release

INE does not publish PPP results, because they are released by Eurostat and a national release would contain the same information.

10.2. Dissemination format - Publications

Some information in the INE web could be find in Spanish and English in  the following link:

PPP Spanish Inventory

10.3. Dissemination format - online database

The form and dates of publication are those decided by Eurostat.

10.4. Dissemination format - microdata access

See concept 10.4 of the Eurostat metadata file prc_ppp_esms.

10.5. Dissemination format - other

Not applicable

10.6. Documentation on methodology

The latest version of the "EUROSTAT-OECD Methodological manual on purchasing power parities" is available online. 

10.7. Quality management - documentation

See concept 10.7 of the Eurostat metadata file prc_ppp_esms.


11. Quality management Top
11.1. Quality assurance

All data provided undergo a detailed multilateral validation process, described in detail in the PPP Manual (see 10.6).

11.2. Quality management - assessment

At European level, the PPP Regulation requires Eurostat to assess the PPP processes of each EU Member State at least once every six years and to publish the results of these assessments on the Eurostat website. The outcome of these assessments are released on Eurostat's website.


12. Relevance Top
12.1. Relevance - User Needs

See concept 12.1 of the Eurostat metadata file prc_ppp_esms.

12.2. Relevance - User Satisfaction

See concept 12.2 of the Eurostat metadata file prc_ppp_esms.

12.3. Completeness

All indicators are calculated and published.


13. Accuracy Top
13.1. Accuracy - overall

See concept 13.1 of the Eurostat metadata file prc_ppp_esms.

13.2. Sampling error

See the concept 13.2 of the 6 different Inventories (Consumer goods Inventory : PPP_CGSES_A, Housing Services Inventory : PPP_RENTSES_A, Compensation of Government Employees Inventory : PPP_SALARES_A, Hospital Services Inventory : PPP_HOSPES_A, Equipment Goods Inventory : PPP_EQIPMES_A and Construction Inventory : PPP_CNSTES_A).

13.3. Non-sampling error

See the concept 13.3 of the 6 different Inventories (Consumer goods Inventory : PPP_CGSES_A, Housing Services Inventory : PPP_RENTSES_A, Compensation of Government Employees Inventory : PPP_SALARES_A, Hospital Services Inventory : PPP_HOSPES_A, Equipment Goods Inventory : PPP_EQIPMES_A and Construction Inventory : PPP_CNSTES_A).


14. Timeliness and punctuality Top
14.1. Timeliness

See concept 14.1 of the Eurostat metadata file prc_ppp_esms.

14.2. Punctuality

See concept 14.2 of the Eurostat metadata file prc_ppp_esms.


15. Coherence and comparability Top
15.1. Comparability - geographical

See concept 15.1 of the Eurostat metadata file prc_ppp_esms.

15.2. Comparability - over time

See concept 15.2 of the Eurostat metadata file prc_ppp_esms.

15.3. Coherence - cross domain

See concept 15.3 of the Eurostat metadata file prc_ppp_esms.

15.4. Coherence - internal

Not applicable


16. Cost and Burden Top

Not applicable.

16.1. Persons involved in the PPP exercise

Not applicable.


17. Data revision Top
17.1. Data revision - policy

See concept 17.1 of the Eurostat metadata file prc_ppp_esms.

17.2. Data revision - practice

Not applicable, cf. 17.1.


18. Statistical processing Top
18.1. Source data

See concept 18.1 of the Eurostat metadata file prc_ppp_esms.

18.2. Frequency of data collection

See concept 18.2 of the Eurostat metadata file prc_ppp_esms and the concept 18.2 of the 6 different Inventories (Consumer goods Inventory : PPP_CGSES_A, Housing Services Inventory : PPP_RENTSES_A, Compensation of Government Employees Inventory : PPP_SALARES_A, Hospital Services Inventory : PPP_HOSPES_A, Equipment Goods Inventory : PPP_EQIPMES_A and Construction Inventory : PPP_CNSTES_A).

18.3. Data collection

See concept 18.3 of the Eurostat metadata file prc_ppp_esms and the concept 18.3 of the 6 different Inventories (Consumer goods Inventory : PPP_CGSES_A, Housing Services Inventory : PPP_RENTSES_A, Compensation of Government Employees Inventory : PPP_SALARES_A, Hospital Services Inventory : PPP_HOSPES_A, Equipment Goods Inventory : PPP_EQIPMES_A and Construction Inventory : PPP_CNSTES_A).

18.4. Data validation

See the concept 18.4 of the 6 different Inventories (Consumer goods Inventory : PPP_CGSES_A, Housing Services Inventory : PPP_RENTSES_A, Compensation of Government Employees Inventory : PPP_SALARES_A, Hospital Services Inventory : PPP_HOSPES_A, Equipment Goods Inventory : PPP_EQIPMES_A and Construction Inventory : PPP_CNSTES_A).

18.5. Data compilation

See concept 18.5 of the Eurostat metadata file prc_ppp_esms.

18.6. Adjustment

See the concept 18.6 of the 6 different Inventories (Consumer goods Inventory : PPP_CGSES_A, Housing Services Inventory : PPP_RENTSES_A, Compensation of Government Employees Inventory : PPP_SALARES_A, Hospital Services Inventory : PPP_HOSPES_A, Equipment Goods Inventory : PPP_EQIPMES_A and Construction Inventory : PPP_CNSTES_A).


19. Comment Top

Not applicable


Related metadata Top


Annexes Top