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College inflates faster than your paycheck. Project the real bill.
The average all-in year of college runs $30,990 in-state public to $65,470 private (College Board 2025-26), and college costs inflate faster than CPI — so the bill due in 10 or 18 years is not the bill on the website today. This calculator projects your 529 balance and contributions forward, inflates the cost to the enrollment years, and shows the coverage percentage plus the monthly amount that would fully fund it.
Parents and grandparents use it at the first birthday-party conversation about college: the sticker price today is not the bill at enrollment, and this shows the inflated 4-year total against the current plan's trajectory. The coverage percentage and the fully-funded monthly number turn an abstract worry into a savings target.
Work backward from the inflated bill. Example: $10,000 saved, 10 years out, 6% return, targeting in-state public ($31,000/yr today at 4% inflation) → the 4-year bill projects to $194,860, your plan builds $67,072 (34%), and full funding takes about $1,080/month. From a newborn (18 years), $500/month at 6% builds $193,677 — 44% of a private bill, most of an in-state one. Starting early beats saving big late.
College Board 2025-26 all-in budgets (tuition, fees, room, board, books): $30,990/yr in-state public four-year, $50,920 out-of-state public, $65,470 private nonprofit, $21,320 community college. Tuition alone: $11,950 in-state public, $45,000 private. Sticker price is not net price — most students receive grant aid — but plan savings against the sticker number and treat aid as upside.
Modern 529s are flexible: change the beneficiary to another family member (siblings, cousins, yourself, a future grandchild), use up to $10,000 for K-12 tuition or student loan repayment, fund registered apprenticeships, or roll up to $35,000 lifetime into the beneficiary's Roth IRA (SECURE 2.0, account must be 15+ years old). Worst case, non-qualified withdrawals tax only the earnings plus a 10% penalty on them — contributions always come back tax-free.