If none of the exceptions apply to you, you will have to give up your existing nationality. For most countries, you will not be able to give up your original nationality until you already have Dutch citizenship.
Therefore, upon submitting your application for naturalisation you sign a declaration. This declaration states that you are prepared to renounce your existing nationality. After having become a Dutch citizen, you renounce your original nationality. This is called a renunciation procedure. You start this procedure with the authorities of your country of origin. It is often possible to do this at the consulate or embassy of your country in the Netherlands.
When the renunciation procedure has been completed, you will receive an official declaration from the authorities of your country. You send this declaration to the IND. If you do not renounce your current nationality even though you are required to, the IND may revoke your Dutch citizenship.
There are various situations in which you do not have to renounce your nationality. You do not, for example, have to give up your nationality in one of the following situations:
Would you like more information? Please contact the IND.