Enter a clue or pattern or both:
The Clue
Income taxes (15 letter answer)
The Answer
INTERNALREVENUE
Tags
Notes
The answer INTERNALREVENUE is rarely seen, appearing only about once every 2400 puzzles.
Related Clues
Service at D.C.
Estate taxes, e.g.
Concern of a certain federal commissioner
It doesn't include customs
Service that makes people nervous