Starting Dec. 30th, the Netherlands will require all passengers ages 12 and over arriving from very high-risk areas, including the U.S., to self-quarantine for 10 days and present a Quarantine Declaration upon arrival. The quarantine may be shortened by day 5 with a negative COVID-19 test result. Additionally, there are numerous Exemption Categories which may be applicable to your travel.
To enter the country, travelers 12 years and older must present proof of vaccination along with a negative COVID-19 test result; either a NAAT (PCR) test taken within 48 hours before departure, or an antigen test taken within 24 hours before departure. A Health Declaration Form must also be completed before entering the Netherlands.
If you are transiting in Amsterdam (AMS) you are not required to quarantine but you must complete a Quarantine Declaration Form and a Health Declaration Form. A negative COVID-19 test is not required if you do not leave the airport and your connection time is within 1 day.