I was thinking about the term "heavy" and it seems to me that is not the right word.
This should be not a punition but a recognition. In fact the geste to pay will be a noble action clearly acclamed every year.
During an annual event the Cesar of who contribute to make the system noble will receive an internation recognition and not only from the rich but, and the most important, from the poor.
"Should the rich recompensed as they are making the system performant thanks noble and gorgeaous taxes"