Part 3: How do we solve?

Part 3: How Much to Save Each Month

You know your inflation-adjusted target from Part 2 (based on current College Board tuition data). Now let's calculate your monthly savings needed to reach that goal.

Four Numbers That Determine Your Monthly Savings

Calculate Your Monthly Savings

Use the calculator below to see exactly how much you need to save each month:

Use the calculator below to estimate how much you need to save each month to reach your college savings goal. Enter your target amount, how many years until your child starts college, and your expected investment return. The calculator will show your required monthly contribution.

What Investment Growth Rate to Use

Your expected returns depend on how long you have until college. The closer to college, the less risk you want to take.

Why Starting Early Makes All the Difference

Let's look at the dramatically different monthly savings required depending on when you start. In this example, our target is $150,000, starting with $0 saved and assuming 7% returns.

Catch-Up Strategies for Late Starters

If your child is already in elementary or middle school and you have not started saving, the numbers above can look daunting. But starting late does not mean the goal is unreachable -- it means you need to use every lever available to close the gap.

Increase your monthly contributions

The most direct lever is simply saving more each month. Even modest increases add up: bumping your contribution from $400 to $550 per month over 8 years (at 7% growth) adds roughly $19,000 to your college fund. Look for places to redirect cash -- canceling unused subscriptions, reducing dining out by one meal per week, or putting bonuses and tax refunds directly into the 529. Every additional dollar benefits from compounding, even over a shorter horizon.

Revisit your school type assumption

A significant portion of the savings gap may disappear when you reconsider the target itself. The difference between four years at a private university (roughly $240,000 in today's dollars) and a strong in-state public school (roughly $110,000) is enormous. Many public flagship universities offer excellent programs, honors colleges, and research opportunities that rival private institutions -- at less than half the cost. If you have been planning for a private school sticker price, running the numbers for an in-state option can dramatically reduce the monthly savings you need.

Factor in financial aid

Many families assume they will pay the full published price, but the average student at a private four-year institution receives over $25,000 per year in institutional grants. Merit aid, need-based grants, and scholarships can cover a meaningful portion of the bill. You will not know your actual aid package until your child applies, but using net price calculators on college websites can give you a more realistic estimate well before then. Planning for 100% of sticker price when you may only owe 60-70% leads to unnecessarily aggressive savings targets.

Taxable brokerage accounts as a supplement

A 529 plan is the primary tax-advantaged vehicle for college savings, but it is not the only option. If you are starting late and need to save aggressively, a taxable brokerage account can serve as a useful supplement. The key tradeoffs:

• Flexibility: Unlike a 529, there are no penalties if the money is not used for education. If your child receives a full scholarship or chooses a different path, the money is simply yours.
• No contribution limits: 529 plans have lifetime contribution limits (typically $300,000-$550,000 depending on the state), and annual gifts above $18,000 may trigger gift tax reporting. A brokerage account has no such constraints.
• Tax cost: You will pay capital gains taxes on investment growth when you sell, which a 529 avoids. For shorter time horizons where growth is modest, this cost may be relatively small.
• Financial aid impact: Assets in a parent-owned brokerage account are assessed at up to 5.64% on the FAFSA, the same rate as a parent-owned 529. So the aid impact is equivalent.

A practical approach: maximize your 529 contributions first for the tax benefit, then use a brokerage account for any amount above what the 529 can efficiently handle given your timeline.