The Kosher tax was one of several indirect taxes imposed by the Russian Imperial government—and sometimes by the Habsburg empire, Germany and Moldavia—on Jews.[1][2][3]
^Leonid Vasilʹevich Belovinskiĭ. Энциклопедический словарь российской жизни и истории: XVIII-начало XX в, Olma Media Group, 2003, ISBN978-5-224-04008-7p. 357.