Different regulations apply to short and long stays.
You do not need a visa if you are a citizen of the countries of the European Union or the European Economic Area . Moreover, no visa is required if you are a citizen of Australia, Canada, Japan, New Zealand or the United States. If you are a citizen of another country, you need a stamp or sticker in your passport in order to stay in the Netherlands. Longer stay than three months Everyone who wants to stay longer than three months in the Netherlands is obligated to contact the local Foreign Police for a Residence Permit within eight days of arrival in this country. Proof that you have health insurance.