Plan for your child's college with tuition inflation and 529 plan growth built in.
Saving for a child's college education is one of the largest financial goals most American families face, and the earlier you start, the more compound growth works in your favour. This calculator estimates how much you need to save monthly to reach your college funding target, accounting for both investment growth and the reality that college tuition rises faster than general inflation. A four-year degree that costs approximately 100,000 dollars today at an in-state public university may cost more than 240,000 dollars by the time a newborn today enters college in 18 years.
According to the College Board, the average total cost of attendance for the 2024-2025 academic year (tuition, fees, room, board, books and personal expenses) was approximately 24,900 dollars per year at public in-state universities, 44,000 dollars per year at public out-of-state universities, 58,600 dollars per year at private nonprofit universities, and exceeded 90,000 dollars per year at the most expensive elite universities. These are average sticker prices — many students receive scholarships and financial aid that reduce net cost significantly, especially at private universities where the discount rate averages 55 percent. Tuition has risen approximately 5 to 6 percent annually for decades, roughly double the general inflation rate. This "college tuition inflation" is why saving today is so critical — every dollar you invest today is worth substantially more toward future tuition than a dollar you save in 10 years. Use our compound interest calculator to see how any lump sum grows over time and our inflation calculator for general purchasing power adjustments.
| College Type | 2024-25 Cost/Year | 4-Year Total Today | Projected in 18 Years (5% inflation) |
|---|---|---|---|
| Public In-State | $24,900 | $99,600 | $239,700 |
| Public Out-of-State | $44,000 | $176,000 | $423,700 |
| Private 4-Year | $58,600 | $234,400 | $564,200 |
| Elite Private | $90,000+ | $360,000+ | $866,300+ |
A 529 plan is a tax-advantaged education savings account named after Section 529 of the Internal Revenue Code. It is the most tax-efficient way to save for college for the vast majority of families. Money contributed to a 529 plan grows tax-free, and withdrawals used for qualified education expenses (tuition, fees, room and board, books, computers and internet, and up to 10,000 dollars per year for K-12 private school tuition) are also tax-free at the federal level. Most states also offer state income tax deductions or credits for contributions to their state's 529 plan — some states offer benefits worth over 500 dollars per year for maximum contributors, meaningfully boosting effective returns. 529 plans have high contribution limits (typically 300,000 to 500,000 dollars total lifetime per beneficiary), no annual contribution cap (though gift tax rules apply above 17,000 dollars per year per contributor as of 2024), and can be used at any accredited institution nationwide plus many international schools. 529 plans owned by parents count only about 5.64 percent toward Expected Family Contribution in federal financial aid calculations, which is favourable compared to student-owned assets (20 percent) or custodial UGMA/UTMA accounts (also 20 percent).
The specific monthly savings target depends on the child's current age, target college cost, assumed investment return, and how much of the total cost you want to save (vs borrow or pay from current income). A common approach is the "one-third rule": save one-third from investments (this calculator), plan to pay one-third from current income during college years, and borrow one-third through student loans if needed. For a newborn today targeting one-third of average public in-state costs, saving approximately 250 to 300 dollars per month at 6 percent annual return covers the target. For full private university funding for a newborn, monthly savings need to exceed 800 dollars. Starting when the child is older significantly increases the required monthly amount because there is less time for compound growth. Use our savings calculator to model general savings targets and our compound interest calculator to explore how different growth rates change outcomes.
| Child Age Now | Years to Save | Monthly ($100k target) | Monthly ($200k target) |
|---|---|---|---|
| Newborn | 18 | $260 | $520 |
| 3 years | 15 | $345 | $690 |
| 6 years | 12 | $475 | $950 |
| 9 years | 9 | $720 | $1,440 |
| 12 years | 6 | $1,170 | $2,340 |
| 15 years | 3 | $2,545 | $5,090 |
Most 529 plans offer two main investment approaches: age-based portfolios and static asset allocation portfolios. Age-based (or "target enrollment") portfolios automatically shift from aggressive (stock-heavy) allocations when the child is young to conservative (bond-heavy and cash-heavy) allocations as the child approaches college age. This mirrors target-date retirement funds and is designed to protect accumulated savings from market volatility right when they will be needed. Static portfolios maintain a fixed allocation regardless of the child's age — you choose one and it does not shift. Age-based portfolios are appropriate for most families because they automate the risk reduction that would otherwise require active management. Historically, a stock-heavy 529 portfolio has averaged 7 to 10 percent annual returns over long periods before inflation and fees. As it shifts toward bonds and cash near college years, expected returns drop to 3 to 5 percent. A blended average of 6 to 7 percent over an 18-year newborn timeline is a reasonable planning assumption, which is what our calculator uses by default.
For most families, 529 plans are the best college savings vehicle, but alternatives exist for specific situations. Coverdell Education Savings Accounts (ESAs) allow up to 2,000 dollars per year per beneficiary with tax-free growth and withdrawals for qualified expenses. Coverdells can be used for K-12 expenses more flexibly than 529s and can be invested in any securities. UGMA and UTMA custodial accounts have no tax advantages but no restrictions on how funds are eventually spent — the money legally belongs to the child when they reach majority age, which can be advantageous or problematic depending on the child. Roth IRAs can double as college savings vehicles for families with earned income under limits: contributions can be withdrawn tax-free and penalty-free for any purpose including college, and the account remains available for retirement if not needed. General taxable brokerage accounts offer maximum flexibility but no tax benefits. For most families, the tax-free growth and qualified withdrawal treatment of 529 plans make them the best primary vehicle, potentially supplemented by other accounts for flexibility. Our ROI calculator and savings calculator help compare investment returns across account types.
Parents often worry that saving for college will hurt their child's financial aid eligibility. The reality is more nuanced. Federal financial aid is calculated using the FAFSA (Free Application for Federal Student Aid), which now uses the Student Aid Index (SAI) — a formula that considers parent income, parent assets, student income, and student assets. Parent-owned 529 plans are counted as parent assets, which have favourable treatment: only up to 5.64 percent of parent assets are considered available for college contribution each year. Student-owned assets (traditional savings accounts, UGMA/UTMA accounts) are counted at 20 percent — nearly four times harsher. Retirement account balances (401(k), IRA, pension) are excluded entirely from FAFSA calculations. Home equity in the primary residence is also excluded from FAFSA (though some private colleges consider it via the CSS Profile). The practical implication: saving in parent-owned 529 plans and retirement accounts is far more aid-friendly than saving in the child's name. Withdrawals from grandparent-owned 529 plans used to count as student income (harsh treatment), but recent FAFSA simplification changes removed this penalty starting with the 2024-2025 aid year, making grandparent 529 plans much more attractive. Even generous savers whose family income is too high for need-based aid will benefit from 529 plans through tax-free growth and state tax deductions. Our tax calculator shows federal tax impact of contributions.
Several avoidable mistakes cost families thousands of dollars in tax savings, investment returns, or usable funds. The first is not using your own state's 529 plan when it offers state tax deductions or credits — even if the plan is not the absolute best-performing, the state tax benefit typically outweighs a 0.1 to 0.5 percent difference in expense ratios or returns for most contributors. Research your state's specific benefit before choosing a plan. The second common mistake is being too conservative too early. A newborn has 18 years until college, which is a long enough horizon to warrant heavy stock allocation. Sitting in bonds or age-based portfolios that shift conservative too fast leaves substantial growth on the table. The third mistake is timing withdrawals poorly. 529 withdrawals must be used for qualified education expenses in the same calendar year they are withdrawn — early withdrawals for expenses expected later in the year can create tax problems. Coordinate with your child's expected expenses each semester. The fourth mistake is over-funding without a Plan B. If your child receives a large scholarship or does not attend college, having too much in a 529 creates penalty risk. The SECURE 2.0 rollover to Roth IRA option (up to 35,000 dollars lifetime after 15 years) provides some flexibility. The fifth mistake is not front-loading contributions when possible. Under gift tax rules you can contribute 5 years of annual gift exclusion at once (currently 85,000 dollars per contributor, 170,000 dollars per couple) to jumpstart compound growth. Use our investment calculator to model different funding schedules.