noun / verb
tax
TAKS/tæks/
A compulsory charge imposed on resources.
The baker pays tax by surrendering part of the sales income at the treasury.

Etymology
Latin taxare meant to evaluate or assess. The noun applies that idea to an obligatory contribution assessed by a government: an amount determined as payable.
In context
Why would it be OK in this sense with suspending the federal gas tax if that were to happen -- if we -- pay for it by closing billionaire tax loopholes?
More examples
- We pay property taxes twice a year.
- Some states tax groceries, while others do not.
- Constant interruptions are a tax on my patience.
- The steep climb taxes even experienced hikers.
Forms
tax · taxes · taxed · taxing
taxation noun — The system or process of imposing taxes.
taxable adjective — Subject to a tax under the law.