529 Calculator
Project tax-free growth of college savings and find what monthly contribution gets you to your goal.
Reviewed & updated for 2026 · How we calculate
College cost reality check (2026 numbers)
According to the College Board's 2024-25 Trends in College Pricing data, sticker price for an in-state public four-year college averages about $11,610 in tuition and fees, $13,310 for room and board, roughly $25,000 per year all-in. Out-of-state at the same institution is closer to $46,000. Private nonprofit four-year averages $43,350 tuition and $14,650 room and board, about $58,000 annually. Elite private universities (Ivies, Stanford, MIT) post sticker prices of $80,000-$90,000.
Over a four-year degree, that's roughly $100,000-$120,000 for in-state public, $230,000+ for private, and $320,000+ for elite private, and that's at today's prices. College tuition has historically grown 4-6% annually (above general inflation), though the rate has moderated to 2-3% in recent years. Projecting forward 18 years with 4% inflation, today's $100K in-state degree would cost about $205K when a newborn today reaches college age.
Net price (after grants and scholarships) is significantly lower for most families. The College Board reports average net price for full-time in-state public students is closer to $19,000/year after grant aid. Aim to fund net price, not sticker, using the school's net price calculator (every college is required by law to provide one) gives a much more realistic target.
The state tax deduction game
529 plans get federal tax-free growth on any qualified withdrawal, but the state tax deduction is where the real boost lives. Around 35 states (as of 2026) offer some form of state income tax deduction or credit for 529 contributions. New York offers up to $10,000 deduction ($5,000 single) for residents using NY's plan. Oregon offers a tax credit (better than a deduction). Illinois offers $10,000/$20,000 deduction. Indiana offers a 20% tax credit on up to $7,500 contributed, effectively $1,500 in free state money each year.
A handful of states (Arizona, Arkansas, Kansas, Maine, Minnesota, Missouri, Montana, Pennsylvania) offer "tax parity", you can contribute to ANY state's 529 and still get the home-state deduction. Most states require using their in-state plan. Florida, Texas, Washington, and other no-income-tax states don't have a deduction either way, feel free to shop for the best plan based on fees and investment options.
The fee difference between the best and worst plans can be significant. Top plans (Utah, New York, Nevada Vanguard, Indiana) have all-in expense ratios under 0.20%. The worst can exceed 1.5% annually. Over 18 years, a 1% fee difference on $300/month contributions reduces the final balance by about $15,000-$20,000. Morningstar's 529 plan ratings are a good starting point for evaluating options.
Smart 529 strategies
- Start at birth (or sooner): An 18-year runway with $250/month at 7% return becomes ~$110,000. Wait until middle school and you need $1,500+/month for the same target. Time is the most valuable input.
- Use age-based portfolios: Most 529 plans offer "target-date" tracks that automatically shift from aggressive (90% stocks at age 0) to conservative (20% stocks at age 18). Reduces sequence-of-returns risk near college start.
- Superfund early: 2026 annual gift exclusion is $19,000 ($38,000 for married couples). 529s allow "5-year forward gifting", contribute $95,000 in one year ($190,000 jointly) without gift tax. The earlier this lump sum compounds, the larger the result.
- SECURE 2.0 Roth rollover (after 15 years): Starting 2024, unused 529 funds can be rolled to a Roth IRA in the beneficiary's name (up to $35,000 lifetime, subject to annual contribution limits). This solves the "what if my kid doesn't go to college" risk for moderate balances.
- Don't overfund: A 529 balance exceeding likely college costs creates a non-qualified withdrawal problem (income tax + 10% penalty on growth). Aim to fund ~70-80% of expected costs; cash flow or financial aid can cover the rest.
- Watch financial aid impact: 529 owned by parents counts as parental asset (5.64% reduction in aid eligibility per the FAFSA Simplification Act formula). 529 owned by grandparents (since 2024 FAFSA changes) no longer counts as student income on distributions, making grandparent ownership newly attractive.
FAQs
What is a 529 plan?
A 529 is a tax-advantaged state-sponsored savings plan for education expenses. Contributions grow tax-free and withdrawals are tax-free if used for qualified expenses: tuition, room/board, books, computers, K-12 tuition (up to $10K/year). Most states offer state tax deduction for contributions.
How much should I save in a 529?
Target: $250-$500/month per child for in-state public college. $500-$1,000/month for private. The earlier you start, the less you need each month. Starting at birth: $250/month grows to ~$110K by college at 7% return. Starting in middle school: needs $1,500+/month for same target.
What if my child doesn't go to college?
Options: (1) Change beneficiary to another family member (sibling, cousin, niece). (2) Use for K-12 tuition. (3) Save for grad school. (4) Roth IRA rollover (up to $35,000 lifetime, beneficiary's account, after 15 years). (5) Withdraw for any purpose, pay income tax + 10% penalty on earnings (not contributions).
Is there a 529 contribution limit?
No annual limit, but contributions over $19,000 (2026, single donor) trigger gift tax reporting. Aggregate cap varies by state, typically $300,000-$500,000+ per beneficiary. 'Superfunding' allows lump-sum contribution of 5x annual exclusion ($95,000) without gift tax.
529 vs Roth IRA for college?
529: Tax-free growth + tax-free withdrawal for qualified expenses. Best if child definitely goes to college. Roth IRA: Tax-free growth, contributions can be withdrawn anytime. Earnings only tax-free for qualified education or after age 59.5. More flexible if education plans are uncertain. Smart strategy: contribute to both, Roth for flexibility, 529 for state tax deduction.