College Savings Calculator
Project what four years of college will cost when your child gets there — and the monthly 529 contribution that gets you ready for it.
How the projection works
Required PMT: future value of monthly savings = target − growth of current savings
The model inflates each of the four college years separately, sums them, applies your coverage percentage, then solves for the monthly contribution whose future value (with your current savings' growth) hits that target by age 18.
Age 3 · in-state cost $27,000/yr · tuition inflation 5% · covering 75% · $5,000 saved · 6% return
Four years starting at 18 project to about $243,000; 75% target ≈ $182,000. With 15 years of growth, that requires roughly $540/mo.
Why the 529 wrapper matters
The same savings inside a 529 beats a taxable account because growth and qualified withdrawals are tax-free — over 15 years that's often five figures kept. Many states also deduct contributions from state income tax. Two planning notes: financial aid formulas count parent-owned 529s lightly (max ~5.6% of value), so saving doesn't wreck aid eligibility; and over-saving is less risky than it used to be, since leftover funds can move to a sibling or partially roll into the child's Roth IRA. If the monthly number looks impossible, remember the coverage slider — most families target a share, not 100%, and bridge the rest with aid and borrowing kept modest. Compare growth scenarios in the investment calculator.
Frequently asked questions
How much should I save monthly for college?
Newborn + public in-state + 6% returns ≈ $350–$400/mo for most of the cost; starting at age 10 roughly doubles that.
What is a 529 plan?
Tax-free growth and withdrawals for education, often with a state-tax deduction; leftover funds are transferable and partially Roth-rollable.
How fast does college tuition rise?
Historically 4–6%/yr — above general inflation. Plan with 4–5%.
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Note: College costs and 529 rules vary by state and change over time; verify current limits and tax treatment. Not financial advice. Last reviewed: July 2026.