(1). In finance, an expression used in client meetings to (1) dissuade a client from making or avoiding investment changes purely to avoid (or incur) capital gains taxes, and (2) allow the speaker to show the client how witty he is, while throughly enjoying the sound of his own voice.
“Well, you know what they say, “don’t let the tax tail wag the investment dog“. Am I right or am I right? This guy knows what I’m talking about!”