Can I use a 529 to pay for graduate school?

Yes. A 529 isn't limited to undergraduate study — it covers qualified expenses at any eligible institution, including graduate and professional programs like law, medical, business, or a master's degree, as long as the school participates in federal student aid programs. The same rules apply: tuition, fees, books, required equipment, and room and board (if enrolled at least half-time) are all qualified. This makes a 529 a flexible home for leftover undergraduate savings — if your child finishes a bachelor's with money remaining, they can keep it growing tax-free for grad school. You can also open a 529 for yourself as both owner and beneficiary if you're planning to return to school. Many international and certain foreign institutions qualify too, so check the school's federal aid eligibility code.