good for you is not in our dictionary (yet). Here's what it could mean:

Results generated using artificial intelligence.

interjection

An expression of sincere praise, encouragement, or congratulations for someone's achievement or good fortune.
(Sarcastic) A dismissive retort indicating a lack of interest, slight annoyance, or contempt for what someone has said.

Examples are provided to illustrate usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

If you just finished doing your taxes, good for you.

From The Wall Street Journal ● Apr. 15, 2026

You have to just do what feels good for you.

From Los Angeles Times ● Dec. 16, 2025