The act of imposing a tax.
"The new policy made taxing foreign goods significantly more difficult for local businesses to handle."
present participle of tax
"The new regulations have been particularly taxing on our small business, leaving little room for error in our budget planning."
not easily borne; wearing
"the burdensome task of preparing the income tax return"
"my duties weren't onerous; I only had to greet the guests"
"a taxing schedule"
With respect to an experience: exhausting; draining.
"After weeks of nonstop overtime, the new project felt incredibly taxing on everyone's energy reserves."