529 plans: start early, pay less
College is the second-largest purchase most families make, and the only one where the price doubles roughly every seventeen years. The day your kid is born is the cheapest day of the rest of their life to start funding it.
The earliest dollar you put in is the cheapest tuition you'll ever buy.
What does college actually cost today?
Sticker prices vary wildly. A state flagship at the in-state rate is one universe; the private liberal-arts college down the road is another. Pick the kind of school you'd want to fund, or punch in a custom number.
The aid-and-scholarship reality check
Almost no family pays sticker. Need-based aid, merit scholarships, work-study, and institutional discounting all chip away at the published price. The gap between sticker and what a typical family actually writes a check for is large — and often surprising.
That $67,200 is the actual funding target for the next sections — what the 529 plan needs to be holding when freshman year begins.
What does a 529 plan actually do?
A 529 is a state-sponsored, tax-advantaged investment account built specifically for education. You contribute after-tax dollars; the money grows tax-free; withdrawals are tax-free as long as they're used for qualified education expenses (tuition, fees, room and board, books, even K-12 tuition up to $10k/year).
Worried your kid won't go to college? Under SECURE 2.0, after the account has been open 15 years you can roll up to $35,000 of unused 529 money into the beneficiary's Roth IRA. You can also change the beneficiary to a sibling, niece, or even yourself. It's not a use-it-or-lose-it trap.
Pick the runway
How old is the kid today? That tells us how many years of compounding you have before the first tuition bill arrives. Younger = cheaper, by a lot.
6% is a sensible default for a 529 because most plans glide from stocks toward bonds as college approaches. Numbers are in today's dollars, so we don't need to inflate the sticker price separately.
Path A — One deposit today
The cleanest path: drop a single check into the 529 today and never touch it again. For the next 18 years, the market does the work.
That's about the cost of a modest wedding — paid once, never again.
Path B — A small check, every month
Don't have a five-figure check sitting around? Spread it out. Same $67,200 target, funded by a tiny automatic transfer every month from now until freshman year.
You put in $37,473. The market does the other $29,727 of work.
Path C — A birthday check, once a year
Even simpler: write one check a year. A birthday tradition, a tax-refund tradition, a year-end ritual. Same target, funded once a year for 18 years.
Less work than monthly, slightly more out-of-pocket because the money waits longer between deposits.
What you put in vs. what's actually there
This is the whole pitch in one picture. The dashed line is what you've contributed (cumulative monthly checks). The solid copper line is the account balance — contributions plus compounding growth. The gap between them, on day one of freshman year, is the market doing the work.
The cost of waiting
Every year you wait to start is a year stripped off the runway. The required monthly contribution doesn't go up by a little — it goes up by a lot, because compounding has fewer years to do its work.
Waiting 3 years means the monthly check has to grow by $58 to hit the same $67,200 target. Today is the cheapest day to start.
The college funding table
Here's what every school type costs to fund by freshman year, at a 6.0% return and 30% aid coverage, with 18 years of runway. Drag any slider above and the whole table redraws.
| School type | Net 4-yr cost | One-time today | Monthly | Annual |
|---|---|---|---|---|
| Public in-state $24,000/yr sticker | $67,200 | $22,882 | $173/mo | $2,174/yr |
| Public out-of-state $44,000/yr sticker | $123,200 | $41,951 | $318/mo | $3,986/yr |
| Private $58,000/yr sticker | $162,400 | $55,299 | $419/mo | $5,255/yr |
How to actually do this
Three moves. None of them complicated. The first one earns you free money in most states.
Most states offer a state income-tax deduction or credit on contributions, but only if you use that state's plan. Free money — take it before shopping for the lowest fees.
Set it up on payday. Same 'pay yourself first' muscle as retirement saving — money that leaves before you can touch it never gets spent.
Most 529 plans offer a public gift link. Birthday and holiday cash from family goes straight into the account instead of a stack of unwanted toys.
Your numbers, in one sentence
Funding Public in-state for a newborn means a $22,882 check today, or $173/month for 18 years. Compounding handles $29,727 of the lift.
Now find a place to park it
The investing happens inside the 529. But the cash that's waiting to be deposited — a birthday gift, a tax refund, a windfall — should earn something while it sits. A high-yield savings account or a CD is the right home for that staging money.