Foto of Dr. Kevin Clarke

The Operetta Research Center is a non-commercial platform, free to use for everyone. To make this possible – and to make publications, CD releases and events possible – we depend on your financial support. Every donation counts and every donor is important, whether you transfer one Euro or one thousand Euros (or more)!

The Operetta Research Center is not subject to value added tax (i.e., it is not “BTW-plichtig”). The Dutch Tax Administration has designated the Operetta Research Center as a “Public Benefit Organisation” (“het algemeen nut beogende instelling”). Donations and gifts are therefore tax deductable. You can use PayPal:


It is also possible to support the Research Center by making a donation via bank transfer:

Stichting Operetta Research Center Amsterdam (ORCA)
ABN AMRO Bank: 52 90 28 662
IBAN: NL11ABNA0529028662