College Savings as New Bucket
College Savings as New Bucket
College savings is not a side project—it is a core bucket in your household allocation. Treating it separately, with its own allocation and glide path, prevents the mistake of accidentally raid it or failing to adjust it as your child approaches college age.
Key takeaways
- College savings should be treated as a distinct bucket with its own time horizon (17 years from now until your child starts college), separate from your retirement savings.
- A college bucket requires a glide-down strategy: higher equity allocation when your child is young, gradual shift to bonds and stable value as college approaches.
- The amount you target for college should be coordinated with your retirement savings—do not raid retirement accounts to fund education.
- A typical target is $50,000 to $150,000 per child, depending on the college and whether you plan to fund all four years or just part of it.
- The 529 plan is usually the most tax-efficient vehicle; alternatives like custodial accounts or taxable brokerage have less favorable tax treatment.
Why college is a separate bucket
Your household has multiple financial goals with different time horizons. Retirement is 20, 30, or 40 years away. A home down payment might be 5 to 10 years away. College is typically 15 to 18 years away. Each bucket needs its own allocation, tailored to that time horizon.
If you lump college savings into your general portfolio, two mistakes happen:
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You might underestimate the risk you are taking. If your overall portfolio is 80/20 (stocks/bonds) and your college deadline is 18 years away, your college bucket is in 80/20 too. But if your child is 10 years old, only 8 years separate you from college, and 80/20 is too aggressive. Your college-dedicated money should be more conservative.
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You might accidentally raid it. If your job situation changes or an unexpected expense hits, having $50,000 sitting in your investment account (labeled "college savings" in your head, but actually just another account) is tempting to liquidate. Segregating college savings into its own account makes it harder to tap for emergencies.
Treating college as a separate bucket solves both problems: it forces you to be intentional about the allocation specific to that bucket and the time horizon specific to that goal.
The college bucket: time horizon and allocation
A newborn has 18 years until college starts. A 10-year-old has 8 years. An 15-year-old has 3 years. Each of these time horizons needs a different allocation.
Age 0–6 (18 years until college): Time is your greatest asset. You can afford to take significant risk. A 90/10 or 85/15 (stock/bond) allocation is reasonable. Even a 100% stock allocation is defensible if your risk tolerance is high and you are young enough to recover from a market decline.
Age 7–12 (11 years until college): Still 10+ years to go. A 70/30 or 75/25 allocation is reasonable. You can still recover from a significant bear market.
Age 13–15 (6 to 3 years until college): Now you are in the home stretch. A 50/50 allocation is more common. You want growth, but not at the expense of stability.
Age 16–17 (2 to 0 years until college): This is the critical period. You will start using the money within the next two years, so you need stability. Many parents shift to 30/70 or 20/80 (stock/bond). Alternatively, some plans have money market or stable value funds that serve the same purpose.
These are guidelines, not rules. Your comfort with volatility, the absolute dollar amount in the bucket, and your backup plans (are you willing to take a student loan if the market crashes?) should inform your specific allocation.
Target college savings amount
How much is enough? This depends on several factors: where your child will likely go to college, whether you plan to fund all four years or expect them to take loans, and your household financial capacity.
Public university, in-state: Current cost is roughly $28,000 to $35,000 per year ($7,000 to $9,000 tuition, $12,000 to $16,000 room and board, $4,000 to $8,000 books and other). Over four years, that is $112,000 to $140,000. Inflation on education costs has run about 5% per year historically, so in 18 years, costs could be $165,000 to $210,000. If you plan to fund half of this (expecting your child to contribute and take some loans), you might target $80,000 to $100,000.
Private university: Current cost is $55,000 to $85,000 per year. Over four years, that is $220,000 to $340,000. In 18 years, with inflation, this could be $330,000 to $500,000+. Full funding is out of reach for most families. A more realistic target is $150,000 to $250,000, which covers part of costs and reduces loan burden.
Community college or in-state public: Current cost is $10,000 to $15,000 per year. A target of $40,000 to $60,000 covers full costs and graduate debt-free.
These are rough numbers, but they help you set a concrete target. Once you have a target, you can calculate how much to save per month to reach it.
Example: Your child is age 2. You want to save $100,000 by age 18 (16 years). If you can earn 7% annually, you need to save about $380 per month ($4,560 per year). If you can only save $200 per month, you will have about $53,000, and you should plan for your child to contribute or take loans for the rest.
Asset allocation within the 529
Most 529 plans offer several investment options: index funds, target-date funds, individual stocks and bonds, and money market funds. Here is how to think about each:
Target-date funds: You pick a year (2042, for example, when your child will enter college), and the fund automatically rebalances from growth to stability. This is the easiest option and requires no ongoing attention. The downside is that you do not control the glide path—the fund's path is its path.
Index funds: You pick the allocation (e.g., 70% VTSAX, 30% BND in the Vanguard 529 plan), and you manually rebalance as your child ages. This gives you control and is often cheaper than target-date funds. The downside is that it requires attention.
Individual stocks: Some 529 plans allow you to pick individual stocks. This is a mistake unless you have a strong conviction about those stocks. College savings should not be experimental; it should be boring and reliable.
Money market or stable value: For a college-bound 18-year-old, this might be appropriate. The yield is low, but the volatility is near zero.
A simple approach: use a target-date fund and forget about it. Every year, when you make a contribution, the fund rebalances itself. You never have to think about it again.
Coordination with retirement savings
One of the most important principles is this: do not raid retirement savings to fund college. Retirement accounts (401(k), IRA, SEP) have serious penalties for early withdrawal, and missing years of contribution limits can never be recovered.
Instead, coordinate: in years when you can afford both, fund both. When you cannot, prioritize retirement (especially if your employer matches 401(k) contributions). College can be partly funded by loans, scholarships, or your child's work; retirement cannot.
Here is a simple hierarchy:
- Contribute to your 401(k) up to any employer match (that is free money).
- Contribute to an IRA up to the annual limit ($7,000 in 2024, $8,000 if age 50+).
- Contribute to your 529 plan up to what you can afford.
- Fund a taxable brokerage account for other goals.
If you can only afford step 1 and 2, do that. College savings comes after you have secured your own retirement.
The "surprise" of education cost inflation
Education costs have inflated at roughly 5% per year for the past 20 years, faster than general inflation. This means a $30,000-per-year college today costs $77,000 per year in 18 years (at 5% inflation). Your initial college savings target, if calculated today based on today's costs, will be too low.
To account for this, some parents regularly revisit their target. Instead of targeting $100,000 calculated in the child's birth year, revisit the target every three years as costs rise. A target that made sense when your child was 2 might need to be higher when they are 8, as you see that actual college cost inflation has happened.
The mechanics of 529 withdrawal
When your child starts college, you begin withdrawing from the 529. You can withdraw money to pay for tuition, fees, room and board, books, and a computer. Some plans have narrow rules; others are flexible. You generally need to keep receipts and coordinate the withdrawal with when you pay the college bill.
If you withdraw more than your actual education expenses, the earnings portion of the excess withdrawal is taxable and subject to a 10% penalty. The contribution portion (your original deposits) always comes out tax-free.
Here is an example: Your 529 account has $100,000. The original contributions were $60,000; the earnings are $40,000. Your child's college bill is $25,000. You withdraw $25,000. Because you withdrew less than the year's education expenses, the entire withdrawal is treated as tax-free. Next year, you do the same. By year three, your balance is $50,000 (contributions $30,000, earnings $20,000). If you withdraw $30,000, you are withdrawing your remaining contributions plus $0 of earnings, still tax-free.
If you end up with excess 529 funds (because your child got scholarships, went to a cheaper school, or didn't go to college), you have options: transfer it to a sibling's 529, roll it to a Roth IRA (under recent rules, up to $35,000 lifetime), or withdraw it (paying income tax and a 10% penalty on the earnings). Plan ahead to avoid this surprise.
The glide-path flowchart
Next
College savings is one significant bucket. But life events change more than just your college planning. Job changes, especially moves between employers and between employment and self-employment, require equally careful portfolio decisions. The next article addresses what happens when you change jobs and must make choices about a 401(k) rollover.