The costs of taking Austrian citizenship depend on whether the application is for a single person or for multiple family members, and also depends on the precise procedure that is used. The only cost of my application appointment was EUR 3.99 for a copy of the Niederschrift (transcript of the appointment), payable in cash or by card. The case officer does however have to notify the applicant about the envisaged costs of the procedure, which will be levied when citizenship is conferred.