The Financial Cost of Children: College Savings vs Your Retirement
Raising a child to 18 ran about $233,000 in the last official US estimate, and college adds more on top. So when a dollar can go toward your kid's college or your own retirement, which wins? The order matters more than the amount — and it usually isn't the order the internet recommends.
- The cost: the USDA's last official estimate put raising a child to age 18 at roughly $233,000 (2015 dollars); inflation has raised it since, and college is extra.
- The decision: capture your full employer match and a baseline retirement rate before maximizing a 529. The same dollars compound for ~30 years toward retirement versus ~15 toward college — a far bigger balance over the longer horizon.
- The backstop: 529s grow tax-free for school, and under SECURE 2.0 leftover funds can roll to a Roth — so funding retirement first no longer means short-changing college.
Where the AI summary above gets this wrong
"Start a 529 plan early and save consistently for your kids' college — the earlier you start, the more time your money has to grow."
That's reasonable as far as it goes. Here's what it misses:
- It omits the order of operations — retirement and your employer match should usually come before maximizing college savings. The same advice that says "start the 529 early" rarely says "but only after you've secured the retirement you can't borrow for."
- "You can borrow for college but not retirement" — students have federal loans, scholarships, and aid; there is no loan for your last 30 years of life. Diverting retirement dollars to college can leave you a financial burden on the same kids you were helping.
- It ignores the 529-to-Roth backstop — under SECURE 2.0, leftover 529 money can now roll to a Roth IRA (subject to limits), which sharply lowers the old "what if I over-fund?" worry the AI never mentions.
Jordan and Maya live in Austin with two kids, ages 4 and 7. Like most parents I talk to, their instinct was to front-load the 529s — pour money into college first, figure out retirement later. When we ran the numbers together, the order flipped. Not because they love their kids less, but because the math and the borrowing rules both point the same way. Here's the analysis I walked them through.
01 What kids actually cost
The headline figure for raising a child to 18 is large, widely quoted, and not especially useful for planning — because it is an average across incomes and regions, and because it excludes college entirely.
What matters more is the shape of the spending rather than the total. Costs are front-loaded in the childcare years, drop substantially once school starts, then spike again for college. A household planning against a flat annual figure will be badly wrong in all three phases.
Childcare is the phase that breaks budgets, and it lands in the years when careers and retirement contributions are most sensitive to interruption. For many households it is the largest line in the budget for five or six years, and it arrives before earnings have peaked.
The retirement cost is the part that goes unmeasured. Money not contributed in your early thirties has the longest to compound, so a five-year reduction in contributions during the childcare years costs far more at 65 than the same reduction at 50 — and it is invisible at the time because nothing appears to have gone wrong.
Naming both the cash cost and the compounding cost is what makes the tradeoffs decidable rather than merely stressful.
The number everyone quotes is about $233,000 to raise a child from birth to age 18. It comes from the USDA's "Expenditures on Children by Families" report, expressed in 2015 dollars and covering housing, food, childcare, transportation, healthcare, clothing, and other basics — but not college. It's the most-cited figure for a reason, but two caveats matter: the USDA discontinued the program, so this is its last official estimate, and inflation since 2015 has pushed the real-world cost meaningfully higher. Treat $233,000 as a well-grounded order of magnitude, not a precise bill.
For Jordan and Maya, the practical takeaway wasn't the exact total. It was that two kids represent a large, multi-decade outflow — and that the costs are heaviest while the kids are home and lightest after they leave. That shape matters: the expense isn't permanent. The 18-year sticker price is real, but it ends, which is exactly the opposite of retirement.
Source: USDA — The Cost of Raising a Child (last official estimate; program discontinued)
02 College and the 529
College stacks on top of the $233,000, and the totals vary enormously — a four-year public in-state degree, a public out-of-state degree, and a private university can differ by a factor of three or more. Rather than invent a single number, hold the principle: college is a large, lumpy, four-year cost that arrives on a known date, and prices have historically risen faster than general inflation. That predictability is what makes it plannable.
The main tool is the 529 plan: a state-sponsored account where contributions grow tax-deferred and withdrawals are free of federal income tax when used for qualified education expenses (IRS Topic 313). Some states add a tax deduction or credit for contributions. The historic worry was over-funding — money trapped in a 529 if your kid skips college or wins a scholarship — but SECURE 2.0 added an escape hatch: leftover 529 funds can roll to the beneficiary's Roth IRA, subject to a lifetime cap and a 15-year account-age rule. We cover the mechanics in 529-to-Roth conversions.
03 Worked example: same dollars, two horizons
Here's the move that reframes the whole decision. Take a fixed amount you can save each month and split it between a 529 (which you'll need in ~15 years for college) and retirement (which has ~30 years to grow). At the same 7% return, the same dollars grow far larger over the longer horizon. Slide the split below and watch the two panels move.
Shows: how the same monthly dollars grow toward college (~15 years) versus retirement (~30 years), both at a 7% annual return. Ignores: financial aid, scholarships, tax credits, the 529-to-Roth option, taxes, state 529 deductions, and multiple kids.
Put $600/month at a 50/50 split and the retirement panel pulls far ahead of the college panel, even though each side gets the same $300 a month — purely because retirement has double the time to compound. That gap is the entire argument for getting the order right. The longer horizon is the scarce resource, and you can't buy it back later.
On the defaults above, the worked example shows: The same dollar grows about 3.8x larger over 30 years than over 15 — which is why retirement dollars are so hard to replace.
04 Why retirement comes first
The decision really turns on one asymmetry: you can borrow for college, but you can't borrow for retirement. Students have federal loans, scholarships, grants, in-state tuition, and 40 years of earning ahead to repay. There is no equivalent for your own old age — no lender extends a loan against your last 30 years of life. If you under-save for retirement to fully fund college, the lost compounding compounds against you, and the worst case is becoming a financial burden on the very kids you were trying to help.
| Dimension | Fund college first | Fund retirement first |
|---|---|---|
| Borrowing options if you fall short | For retirement: none — no lender funds your old age | For college: federal loans, scholarships, aid, in-state tuition |
| Compounding horizon | ~15 years to the first tuition bill | ~30+ years to and through retirement |
| Aid impact | Aid won't backfill a thin retirement account | Aid and loans can backfill a college gap |
| Long-run family outcome | Risk: parents run short at 85, kids carry the cost | Parents stay independent; kids carry only manageable college debt |
None of this means starving the 529. It means sequencing: secure the part you can't borrow for, then fund the part you can. The next chapters show how little you give up on the college side by doing that.
05 Aid, credits, and the 529-to-Roth backstop
Funding retirement first feels riskier for college than it actually is, because several levers shrink the gap. Financial aid via the FAFSA assesses parent-owned assets (including 529s) far more lightly than money held in a child's name, so saving in your own name rarely torpedoes aid. Scholarships and in-state tuition can cut the bill substantially, and the federal Child Tax Credit returns cash to families while the kids are young. And remember from chapter 1: kids eventually leave, so household expenses fall right around the time tuition arrives.
The over-funding fear is mostly solved. Under SECURE 2.0, leftover 529 funds can roll to the beneficiary's Roth IRA — subject to a lifetime cap, a 15-year account-age requirement, and annual limits tied to the IRA contribution limit. Money you save "for college" that isn't needed can become the kid's retirement head start instead of a penalty.
So the realistic downside of funding retirement first and the 529 second isn't "my kid can't go to college." It's "my kid may take some manageable, repayable loans" — a far better outcome than parents who run out of money. We walk through the rollover in detail in 529-to-Roth conversions.
Source: IRS Topic No. 313 — Qualified Tuition Programs · Federal Student Aid (FAFSA)
06 A funding order that works
Here's the sequence I gave Jordan and Maya — a default order, not a law. Capture the free money and the baseline you can't replace first, then layer college on top:
- Employer match. Contribute at least enough to get the full match — an immediate return nothing else beats. See getting the full 401(k) match.
- A baseline retirement rate. Establish a steady contribution (many target around 15% of income, including the match) so the 30-year horizon is working for you.
- Then the 529. Now direct college dollars into a 529, sized to a realistic share of expected costs rather than 100% of a private-school sticker price.
- Flex over time. As income rises and the kids age out of childcare, you can lean harder into the 529 — and lean on aid, scholarships, and loans for any remaining gap.
Whether you're "on track" for retirement is exactly the kind of thing worth checking before you decide how aggressively to fund college — see when can I retire.
07 Where the money goes, by phase
The total is less useful than the shape, because the phases demand completely different things.
| Phase | Dominant cost | What it does to retirement saving |
|---|---|---|
| 0-5 | Childcare, frequently the largest line in the budget | The most damaging years to reduce contributions — this money has the longest to compound |
| 6-17 | Housing, food, activities — substantial but absorbable | The window to catch up, and the one most often missed |
| 18-22 | College, if you fund it | Competes directly with peak-earning-years retirement contributions |
The middle row is the opportunity. Childcare costs end abruptly when school starts, and redirecting that amount rather than absorbing it into general spending is the single largest saving decision most parents get to make.
Source: Consumer Financial Protection Bureau — Planning for retirement
When Maya and I ran this, the order surprised us. We fund our employer match and a baseline retirement rate first, and only then the 529 — not because we love our kids less, but because the worst outcome for them is parents who run out of money at 85. Kids can borrow for college, win scholarships, work, and earn for forty years afterward; nobody lends you money for your own old age. So we secure the oxygen mask we can't borrow for, then help with college from a position of strength. The 529-to-Roth backstop made it easy to say yes to both.
FAQ
How much does it cost to raise a child in the US?
The most-cited figure is roughly $233,000 to raise a child to age 18, from the USDA's "Expenditures on Children by Families" report using 2015 dollars. The USDA discontinued the program, so that is its last official estimate; inflation since 2015 has pushed the real-world number higher, and it excludes college.
Should I save for my kids' college or my own retirement first?
Retirement generally comes first. Capture your full employer match and a baseline retirement contribution before maximizing 529 college savings, because you can borrow for college but not for retirement. Underfunding retirement to fully fund college can cost far more in lost compounding and the risk of becoming a financial burden on your kids later.
What is a 529 plan and how is it taxed?
A 529 is a state-sponsored education savings account. Contributions grow tax-deferred and withdrawals are federal-income-tax-free when used for qualified education expenses (IRS Topic 313). Non-qualified withdrawals owe income tax plus a 10% penalty on earnings.
Can leftover 529 money be moved to a Roth IRA?
Yes. Under SECURE 2.0, leftover 529 funds can be rolled to the beneficiary's Roth IRA subject to conditions — a lifetime cap, a 15-year account age requirement, and annual limits tied to the IRA contribution limit. This lowers the over-funding risk that used to make people cautious about 529s.
Does saving for college hurt financial aid?
Where money is held matters. On the FAFSA, parent-owned assets (including 529s) are assessed far more lightly than assets in a child's name. Income and aid formulas change, so file the FAFSA and check studentaid.gov rather than assuming savings disqualify you.
Why does the same money grow more for retirement than for college?
Time. A dollar saved for a child's college compounds for roughly 15 years; the same dollar left for retirement can compound for 30 years or more. At the same return, the longer horizon produces a far larger balance, which is why funding retirement first usually wins on the math.
Sources
Regulator references
- USDA — The Cost of Raising a Child · U.S. Department of Agriculture · 2017 · ~$233,000 to age 18 (2015 dollars); last official estimate, program discontinuedThe USDA's estimate of the cost of raising a child to 18, by household income.Last verified: 2026-06-21
- IRS Topic No. 313 — Qualified Tuition Programs (529 plans) · Internal Revenue Service · 2025 · tax treatment of 529 contributions and withdrawalsTax Topic 313: how 529 qualified tuition programmes are taxed and what counts as a qualified expense.Last verified: 2026-06-21
- Federal Student Aid — Applying for Aid (FAFSA) · U.S. Department of Education · 2025 · federal loans, grants, and aid eligibilityFederal Student Aid, where the FAFSA is filed and aid eligibility is determined.Last verified: 2026-06-21
- Internal Revenue Service ·Child Tax Credit eligibility and amounts.Last verified: 2026-09-07
Research
- Adda, J., Dustmann, C. & Stevens, K. (2017), "The Career Costs of Children" · Journal of Political Economy 125(2): 293-337the lifetime earnings cost of a child separated from the direct cost of raising oneLast verified: 2026-09-07
- Kleven, H., Landais, C. & Søgaard, J. E. (2019), "Children and Gender Inequality: Evidence from Denmark" · American Economic Journal: Applied Economics 11(4): 181-209the long-run earnings gap that opens at the arrival of a child and does not close, and which parent carries itLast verified: 2026-09-07
Calculator unit tests · the assertions this page's worked example is checked against, and their last result
Changelog
- 2026-06-21 — initial publish (new format)
See how college vs retirement plays out across your 30-year projection
Model both goals against your real numbers — 529 growth, retirement balances, and your retirement date, month by month.
Join the Waitlist
Jordan Reeves
Founder of Talk Through Wealth. A software engineer for over a decade before turning to retirement planning, Jordan built the projection engine after watching family members get fragmented, country-by-country advice that never reconciled. He writes about retirement the way the engine computes it: month-by-month, lifetime-long, and skeptical of any rule of thumb that hasn't been run through the math.