I am in the process of converting to Judaism. When the Conversion ceremonies are completed, is it considered customary to render a gratuity to the Rabbi that we have been working with? This is a sensitive subject to ask of our Rabbi, whom we love.
I do not believe it is necessary to give an honorarium to the rabbi who is doing your conversion, particularly if you have joined or intend to join his/her synagogue. Working with conversion students is part of a rabbi's normal duties. However, it would be a nice thing if you made a contribution to the synagogue in honor of the rabbi and in celebration of your conversion. I hope that helps. Good luck, and Mazal Tov!