What is a 529 plan? A plain-English explainer.
A 529 plan is a tax-advantaged investment account designed for education. Here's exactly how it works, who it's for, and the three things every parent should know.

If you've heard the term '529 plan' tossed around at a family dinner or in a personal-finance podcast, you're not alone. They're the most powerful tax-advantaged way to save for a child's education in the United States — and they're also one of the most misunderstood.
The 60-second version
A 529 is an investment account. You put money in, it gets invested in a portfolio (usually a mix of stock and bond funds), and when your kid is old enough to use it for school, you can withdraw the money — including all the growth — without paying federal income tax on it.
The three things to actually know
First, tax treatment beats almost everything else. Your earnings grow tax-free, and qualified withdrawals are also federal tax-free. Many states throw in a deduction or credit on top.
Second, time is the entire game. Starting at birth versus age 10 can double the final balance. The cheapest dollar you'll ever contribute is the one you put in the day after your kid is born.
Third, you have more flexibility than you think. If your child doesn't go to college, you can change the beneficiary, use the funds for K-12 (up to $10k/yr), apprenticeships, student loans, or — under SECURE 2.0 — roll a portion into a Roth IRA.