The answer is: That it is not the amount of tax that is the problem but rather the fact that the colonists were not involved in passing the tax
After the colonists realize that they were not involved in passing the stamp tax, they fully aware that The British Government had no regard to their interest. The stamp act would massively cut down the colonists' income since the majority of their activities relied on paper.
This lead to the colonial outrage toward the stamp act. The overwhelming opposition given by the colonists lead to its repeal 1 year after it's implemented.
The stage is known as Social Unrest.
Social unrest denotes the condition of collective dissatisfaction with the political system which can manifest itself into the unconventional form of protest behavior. In the state of social unrest prophets and intellectuals become hostile towards existing policies and join into the mass groups to take initiatives for better management of public safety and maintenance of law and orders an across the city.
The Senate and the delegates of Virginia