As of the start of 2020, we have to charge € 1,55 entertainment tax for each person that walks with us. It is like a payment for the ‘Open-Air Museum’ of Amsterdam. We charge this at the start of the tour, with debit or credit card. For more info about this entertainment tax, please go to: https://www.amsterdam.nl/en/municipal-taxes/entertainment-tax/ We do not ask this upfront, as we trust that you will take it in consideration if you tip at the end of the tour. Thank you for your understanding.