You know what a 529 is and how the aid formula reads it; now you need a number you can actually save every month. Elena — 36, earning $78,000, with 3-year-old Mateo — has 15 years, a budget with limited slack, and a plan to build that is modest, automatic and forgiving.
You don't have to fund 100%
Funding the whole cost is not the assignment. A college bill is paid by stacking sources — savings, income during the school years, scholarships and grants, the student's own earnings, and some borrowing — and savings is one slice. Aiming at a portion you can name ("one year of tuition," "four years of books and fees," "a third of the total") turns a paralyzing number into a monthly transfer.
| Target | What it does to your plan |
|---|---|
| "I must save the full sticker price" | So large it stalls at zero |
| "I'll fund a portion I can name" | A number a real budget can hit |
| "Savings is one source among several" | Matches how college is actually paid for |
Retirement comes first, then college
The order surprises people, and the reasons are mechanical:
- Your child can borrow for college; you cannot borrow for retirement.
- Your 401(k), IRA and pension balances are not reported on the FAFSA, while a 529 balance is counted at up to 5.64% — the financial-aid lesson shows the arithmetic.
- Capture the full employer match in your 401(k) before you fund a 529; an unmatched dollar in a college account costs you the matched dollar you skipped.
- A parent who underfunds retirement can end up depending on the same child the college fund was meant to help.
Elena keeps her 401(k) contribution at the level that earns her full employer match, then funds the 529 from what's left.
Automate it and treat it as a sinking fund
A sinking fund breaks a big future cost into a flat monthly set-aside — the same move as the anti-surprise system. Automate the transfer for the day after payday so the contribution happens whether or not you remember it, and size it with the savings goal calculator: enter the target, the monthly amount and an assumed return, and it tells you how many months you need.
One guardrail comes first: an emergency fund. A job loss or a car repair with no cash cushion forces an early withdrawal from the college account, and the growth on a non-qualified withdrawal is taxed plus a 10% additional tax. A cushion sized with the emergency fund calculator keeps the college plan from becoming collateral damage.
Let family help — the gift-tax rule
Grandparents and relatives can contribute to your child's 529 directly, or open their own. For 2025 and 2026 each giver can give each beneficiary $19,000 without filing a gift-tax return ($38,000 from a married couple), and a 529 gets a special election: a giver can front-load $95,000 at once and treat it as five years of $19,000 gifts on Form 709. A grandparent-owned 529 also stays off the FAFSA entirely, both as an asset and, since the 2024–25 form, as student income when it pays out.
What happens to leftover 529 money
| Leftover-money option | The rule |
|---|---|
| Change the beneficiary | Move the account to a member of the family as the IRS defines it — a sibling or a parent, for example — with no tax consequences |
| Use it for your own education | Name yourself beneficiary; the same qualified-expense rules apply |
| Roll it into a Roth IRA | Up to $35,000 over the beneficiary's lifetime, into the beneficiary's own Roth IRA; the 529 must be open 15 years or more, contributions from the last 5 years (and their earnings) can't move, and each year's rollover counts against the annual Roth IRA contribution limit, $7,000 for 2025 |
| Pay student loans | $10,000 lifetime per person, for the beneficiary or a sibling |
| Scholarship exception | Withdraw up to the scholarship amount with no 10% additional tax; income tax on the earnings still applies |
| Withdraw it anyway | Income tax plus the 10% additional tax on the earnings only; contributions come back untouched |
The Roth IRA rollover is the headline change (a SECURE 2.0 Act change): money saved for school that goes unused becomes a head start on your child's retirement instead of a penalized withdrawal. At the 2025 limit of $7,000 a year, moving the full $35,000 takes at least five years — open the account early and the 15-year clock takes care of itself.