National Statistics Institute

Help / FAQ: Frequently Asked Questions

In this section we have included the most frequently asked questions that we receive at our customer services department, as well as the corresponding responses. We hope to resolve in this manner a large number of doubts.

If you do not find the response to your question on this page, please do not hesitate in contacting us in  contact form electronic format. We will attempt to provide you with a response within a maximum period of three days.

1. Statistical information in general

1. Where can I find statistical data?

All the INE's statistical information is published on this web site, within the section INEbase, structured by topics and sections so that the localisation of same is as simple as possible. Select at INEbase the topic and section of interest to you, or write the related term in the Search engine. The information that is available on the web site includes all the data that is published, both with regards to statistical data as well as information on methodology.

All enquiries made on this web site, in all sections, are free of charge.

2. At what time intervals is the data updated?

The statistical information available on the Internet is permanently updated, given that the diffusion of statistical results through this medium is given priority.

3. How do we know when the data is updated?

INE data follows a rigorous   calendar that indicates the exact publication date of short term statistics (monthly or quarterly). For structural statistics (at annual or greater intervals), the month of publication is initially shown, and on the last Friday of each month (t) the exact date of statistics scheduled for the month (t+2) is announced.

In order to enable ease of access to the latest information, on the   main page we have prepared the section Last minute, containing the extract from the latest press releases published. From here it is also possible to access the full contents of the press release, as well as detailed information on the operation.

The INE Twitter account will keep you informed of all publications produced, as well as other relevant news. Moreover, if you subscribe to the   RSS news service you will receive via your computer a warning each time an update to the data takes place.

4. Is it possible to obtain data that is more detailed than that published on the web site?

Although it is not always possible, on occasions it is possible to obtain information that is more broken down (sectorial, territorial, etc.) than that published, but this must always be requested in the form of a customised petition. A customised petition is not always viable and it will be up to the unit responsible for the survey to decide on the viability of same. When the petition is viable programming costs are generated that are invoiced to the petitioner, the amount of same having been previously communicated.

5. Is it possible to view data from previous periods that the INE does not have published on the web site?

When on the desired date the operation on which information is sought was indeed elaborated, there will exist a publication containing the data, that may be consulted at the library of the Central Services in Madrid or INE provincial delegations.

It is advisable that you previously make a telephone call to verify that on the desired date the investigation that the data refers to was indeed elaborated, and the publication in question is available. Consult the   address and telephone listing of the customer services department.

2. CPI. Consumer price index

1. Where may one find data on the latest published CPI?

Various query options are available, which may be accessed via a   general menu . Updating a rental income with the CPI may be carried out with the option Would you like to update a personal income or spending?. Ascertaining CPI variation rates between different periods may be carried out with the option How much has the CPI varied since....?. And if you wish, you may also access the   detailed information .

2. What months need to be included to calculate the CPI variation for a full year? Do the initial and final months need to be repeated?

To consider a period of 12 months, the initial month and the final month must be the same. In other words, if we wish to calculate the annual variation experimented by the CPI in September 2004 we must compare September 2003 with September 2004 (12 months), and not August 2003 with September 2004 (13 months), nor October 2003 with September 2004 (11 months). This must be done in this manner because the indices refer to the last day of the month, thus, by considering September 2003 this month would not be included within the calculation, but September 2004 would indeed be included.

3. What period needs to be selected to obtain the variation for the natural year?

The natural year is obtained by considering the period December – December. The explanation of why this needs to be done in this manner is found in the previous section.

4. Can the INE provide advice on the procedure for reviewing a rental contract?

The INE does not have the authority to advise with regards to the interpretation of contracts, it can only provide the CPI variations between the requested months at any given moment. To update a rental contract with the Consumer Price Index, the variation with the general CPI may be calculated very easily by using the sections that the INE publishes on its web site: Would you like to update a personal income or spending? or How much has the CPI varied since....?

5. Is there any section where the INE publishes CPI forecasts?

Since January 2011, the INE has published the CPI flash estimate,publication dates of this indicator are available on the calendar.

This indicator is calculated using the same methodology as that used for the CPI. The difference lies in the information used, since it is necessary to carry out macrofiltering procedures on the data collected at establishments and apply different statistical modelling methods in order to estimate information not yet forthcoming at the time of publication.

The CPI flash estimate provides information only as a guideline, and therefore, it does not have to coincide with the CPI final data that will be published subject to a fixed publication calendar, around the second week of the month following that referred to in the data

6. What is the most convenient manner for calculating a retirement pension?

At the Social Security web site, within the section Virtual Office, there is a section titled Do it yourself: program for the self-calculation of the retirement pension, which will allow you to effect the calculations. You may access it directly through   this address .

7. Does there exist a special index for rental premises?

The INE does not elaborate nor publish a special index for rental premises.

3. Population data

1. What is the population of Spain?

The official population figures are those that are derived from the administration of the municipal register, and which are published annually, with reference to January 1, by means of a Royal Decree. These figures may be consulted on a   national, autonomous community, province and municipality level .

Moreover, the INE publishes population figures obtained from the   Population Censuses , which are purely statistical in nature.

2. To what territorial level may the population figures be broken down to?

The population figures may be obtained with a very broad territorial break down, although this would always be exclusively for statistical purposes. The   Nomenclature  or List of population units, which derives from the Municipal Register, contains the population of all the entities and nuclei of each municipality.

3. Where must one request the registration, de-registration or modification of a Municipal Register inscription?

The elaboration, maintenance, review and custody of the Municipal Register corresponds to the City Council, not to the INE. Consequently, for any registrations, de-registrations or modifications of the data on record at the Municipal Register it is necessary to request same at the City Council.

4. Issue of certificates

1. What information can be certified?

All the information published by the INE may be certified.

2. How may one obtain a statistical data certificate?

At the INE Central Services in Madrid and at any of the INE provincial delegations you may request and obtain, usually immediately, a certificate. You may consult the   address and telephone listing for all the customer services on offer.

Anyone who wishes to avoid travel may provide via post, electronic mail or fax, the following details:
- Name, surnames, DNI and domicile of the person in the name of which the certificate must be issued
- Datum or data which you want certified

Once this communication is received a pre-payment form is forwarded to your domicile so that you may proceed with the payment, in advance, of the official fees, to be made effective at any one of the collaborating banking entities. This form must be forwarded to the INE, who will subsequently issue and mail the requested certificate to the designated domicile.

3. Is it possible to request telematic certificates?

There is a   Electronic Headquarters  where, nowadays, it's only possible to request telematically the issue of Consumer Price Index certificates (CPI), general national index for complete annual periods. A digital certificate is required to use this service. Furthermore, users will have to pay, telematically, the rate corresponding to the issue of the certificate.

5. Confidentiality of the data

1. May information be obtained on a particular person or company from the INE?

No, the INE does not provide nominative data on any of the persons or companies collaborating in the surveys, or included in any type of registry which it administers, given that this type of information is always protected by statistical secret.

6. Training and employment

1. How may one ascertain the availability of vacancies that the INE offers both in the form of civil service employment as well as through labour contracts?

The availability of vacancies for working at the INE, both as a civil servant as well as via a contract, are duly advertised on the web site, in the section   training and employment .

2. Does the INE offer any types of scholarships?

The INE offers annually scholarships for postgraduates who wish to initiate themselves in statistical research methods and techniques. To obtain more information on this issue you may visit the section   postgraduate scholarships .

7. Requirements for navigating throughout the INE web site

1. Which navigator needs to have been installed?

Our website is optimised for the most popular browsers: Internet Explorer© (version 7 and later), Mozilla Firefox, Opera and Google Chrome. Notwithstanding, the navigation program that you use may request that you install an additional program, if same is not already installed, to access specific files, as may be Acrobat PDF (you need   Acrobat Reader ), Microsoft EXCEL (you need   Excel Viewer ), Microsoft WORD (you need   Word Viewer ) or compressed ZIP or RAR files (you need a program like Winzip © (payment) or   7ZIP (free).

8. Security Recommendations