Exhibit 8

PRINCIPAL SUBSIDIARIES

The principal subsidiaries of ING
Groep N.V. and their statutory place of incorporation or primary place of business are as follows:

Companies that are part of the banking operations



|                                     |  |                          |  |                                                     |     |   |      |  |     |  
|------------------------------------ |  | ------------------------ |  | --------------------------------------------------- | --- | - | ---- |  | --- | -
|                                     |  |                          |  | Proportion of ownershipand interest held by theBank |    
|                                     |  |                          |  | 2014                                                |     |   | 2013 | 
|Subsidiary                           |  |                          |  |                                                     |     |   |      |  |     |  
|ING Bank N.V.                        |  | The Netherlands          |  |                                                     | 100 | % |      |  | 100 | %
|Bank Mendes Gans N.V.                |  | The Netherlands          |  |                                                     | 100 | % |      |  | 100 | %
|ING Lease (Nederland) B.V.           |  | The Netherlands          |  |                                                     | 100 | % |      |  | 100 | %
|ING Corporate Investments B.V.       |  | The Netherlands          |  |                                                     | 100 | % |      |  | 100 | %
|ING Vastgoed Management Holding B.V. |  | The Netherlands          |  |                                                     | 100 | % |      |  | 100 | %
|WestlandUtrecht Bank N.V.            |  | The Netherlands          |  |                                                     | 100 | % |      |  | 100 | %
|ING België N.V.                      |  | Belgium                  |  |                                                     | 100 | % |      |  | 100 | %
|ING Luxembourg S.A.                  |  | Luxembourg               |  |                                                     | 100 | % |      |  | 100 | %
|ING DiBa A.G.                        |  | Germany                  |  |                                                     | 100 | % |      |  | 100 | %
|ING Bank Slaski S.A.                 |  | Poland                   |  |                                                     | 75  | % |      |  | 75  | %
|ING Financial Holdings Corporation   |  | United States of America |  |                                                     | 100 | % |      |  | 100 | %
|ING Vysya Bank Limited               |  | India                    |  |                                                     |     |   |      |  | 43  | %
|ING Direct N.V. (1)                  |  | Spain, Italy             |  |                                                     |     |   |      |  | 100 | %
|ING Bank A.S.                        |  | Turkey                   |  |                                                     | 100 | % |      |  | 100 | %
|ING Bank (Australia) Ltd             |  | Australia                |  |                                                     | 100 | % |      |  | 100 | %
|ING Bank (Eurasia) Z.A.O.            |  | Russia                   |  |                                                     | 100 | % |      |  | 100 | %



|(1) | In 2014, ING Direct N.V. merged with ING Bank N.V.
|--- | --------------------------------------------------



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Companies that are part of the insurance operations



|                                                                       |  |                          |  |                                                      |    |   |      |  |     |  
|---------------------------------------------------------------------- |  | ------------------------ |  | ---------------------------------------------------- | -- | - | ---- |  | --- | -
|                                                                       |  |                          |  | Proportion of ownershipand interest held by theGroup |   
|                                                                       |  |                          |  | 2014                                                 |    |   | 2013 | 
|Subsidiary                                                             |  |                          |  |                                                      |    |   |      |  |     |  
|NN Group N.V. (1)                                                      |  | The Netherlands          |  |                                                      | 68 | % |      |  | 100 | %
|Nationale-Nederlanden Levensverzekering Maatschappij N.V.              |  | The Netherlands          |  |                                                      | 68 | % |      |  | 100 | %
|Nationale-Nederlanden Schadeverzekering Maatschappij N.V.              |  | The Netherlands          |  |                                                      | 68 | % |      |  | 100 | %
|Parcom Capital B.V.                                                    |  | The Netherlands          |  |                                                      | 68 | % |      |  | 100 | %
|Nationale-Nederlanden Services N.V.                                    |  | The Netherlands          |  |                                                      | 68 | % |      |  | 100 | %
|Movir N.V.                                                             |  | The Netherlands          |  |                                                      | 68 | % |      |  | 100 | %
|ING Re (Netherlands) N.V.                                              |  | The Netherlands          |  |                                                      | 68 | % |      |  | 100 | %
|Nationale-Nederlanden Bank N.V.                                        |  | The Netherlands          |  |                                                      | 68 | % |      |  | 100 | %
|ING Investment Management Holdings N.V.                                |  | The Netherlands          |  |                                                      | 68 | % |      |  | 100 | %
|ING Pojistovna a.s.                                                    |  | The Netherlands          |  |                                                      | 68 | % |      |  | 100 | %
|ING ivotná poistovna a.s                                             |  | Slovakia                 |  |                                                      | 68 | % |      |  | 100 | %
|ING Uslugi Finansowe S.A.                                              |  | Poland                   |  |                                                      | 68 | % |      |  | 100 | %
|ING Powszechne Towarzystwo Emerytalne S.A.                             |  | Poland                   |  |                                                      | 54 | % |      |  | 80  | %
|ING Asigurari de Viata S.A.                                            |  | Romania                  |  |                                                      | 68 | % |      |  | 100 | %
|ING Greek Life Insurance Company S.A.                                  |  | Greece                   |  |                                                      | 68 | % |      |  | 100 | %
|ING Biztosító Zártkörûen Mûködõ Részvénytársaság                       |  | Hungary                  |  |                                                      | 68 | % |      |  | 100 | %
|ING Pensionno-Osigoritelno Druzestvo EAD                               |  | Bulgaria                 |  |                                                      | 68 | % |      |  | 100 | %
|ING Life Belgium N.V.                                                  |  | Belgium                  |  |                                                      | 68 | % |      |  | 100 | %
|ING Non Life Belgium N. V.                                             |  | Belgium                  |  |                                                      | 68 | % |      |  | 100 | %
|ING Life Luxembourg S.A.                                               |  | Luxembourg               |  |                                                      | 68 | % |      |  | 100 | %
|Nationale-Nederlanden Vida, Compañia de Seguros y Reaseguros S.A.      |  | Spain                    |  |                                                      | 68 | % |      |  | 100 | %
|Nationale-Nederlanden Generales, Compañia de Seguros y Reaseguros S.A. |  | Spain                    |  |                                                      | 68 | % |      |  | 100 | %
|ING Emeklilik A.S.                                                     |  | Turkey                   |  |                                                      | 68 | % |      |  | 100 | %
|ING Life Insurance Company Limited                                     |  | Japan                    |  |                                                      | 68 | % |      |  | 100 | %
|                                                                       |  |                          | 
|Voya Financial Inc. (2)                                                |  | United States of America |  |                                                      |    |   |      |  | 56  | %
|ING International Nominee Holdings, Inc.                               |  | United States of America |  |                                                      |    |   |      |  | 56  | %
|ING Life Insurance and Annuity Company                                 |  | United States of America |  |                                                      |    |   |      |  | 56  | %
|ING North America Insurance Corporation                                |  | United States of America |  |                                                      |    |   |      |  | 56  | %
|Lion Connecticut Holdings Inc.                                         |  | United States of America |  |                                                      |    |   |      |  | 56  | %
|ReliaStar Life Insurance Company                                       |  | United States of America |  |                                                      |    |   |      |  | 56  | %
|ReliaStar Life Insurance Company of New York                           |  | United States of America |  |                                                      |    |   |      |  | 56  | %
|Security Life of Denver Insurance Company                              |  | United States of America |  |                                                      |    |   |      |  | 56  | %
|ING USA Annuity and Life Insurance Company                             |  | United States of America |  |                                                      |    |   |      |  | 56  | %
|ING Investment Management Co                                           |  | United States of America |  |                                                      |    |   |      |  | 56  | %
|Security Life of Denver International Limited                          |  | United States of America |  |                                                      |    |   |      |  | 56  | %



|(1) | NN Group is classified as held for sale and discontinued operations in 2014.
|--- | ----------------------------------------------------------------------------

|(2) | Voya was deconsolidated in 2014 following loss of control.
|--- | ----------------------------------------------------------