Projected 529 Balance
$73,299
Growth
$25.1k
Coverage
61%
Projected 529 Balance
$73,299
after 12 years at 6%
Contributed
$48.2k
Growth
$25.1k
Tax Saved
$2.2k
Inputs
Result
$300/month for 216 months at 0.5%/month: FV = 300 x ((1.005)^216 - 1) / 0.005 = $115,785. Total contributions = $64,800. Growth = $50,985. State tax savings at 5% = $3,600/yr x 5% x 18 = $3,240.
Inputs
Result
Annuity FV = 500 x ((1.005)^96 - 1) / 0.005 = $61,567. Lump sum FV = 10,000 x (1.005)^96 = $16,123. Total = $77,690. Growth = $77,690 - $58,000 = $19,690.
Financial advisors recommend saving about one-third of projected college costs in a 529 plan. For a 4-year public university averaging $26,000/year ($104,000 total), target about $35,000. Starting early with $200-$400/month at 6% return can reach this in 12-15 years.
| Monthly Savings | 10 Years (6%) | 15 Years (6%) | 18 Years (6%) |
|---|---|---|---|
| $200 | $32,800 | $58,400 | $77,200 |
| $300 | $49,200 | $87,600 | $115,800 |
| $500 | $82,000 | $146,000 | $193,000 |
Earnings grow tax-free federally and withdrawals for qualified education expenses are not taxed. Over 30 states offer state income tax deductions or credits on contributions, typically saving 4-9% on contributions up to $2,000-$10,000 per year.
| State Tax Rate | Annual Contribution | Tax Savings/Year | 18-Year Savings |
|---|---|---|---|
| 3% | $3,600 | $108 | $1,944 |
| 5% | $3,600 | $180 | $3,240 |
| 7% | $3,600 | $252 | $4,536 |
| 9% | $3,600 | $324 | $5,832 |
The 529 balance uses compound interest: FV = PMT x ((1+r)^n - 1) / r + PV x (1+r)^n. With $5,000 initial, $300/month at 6% for 12 years: contributions total $48,200 and growth adds ~$24,600 for a projected balance of ~$72,800.
Unused 529 funds can be transferred to another family member for education, used for K-12 tuition (up to $10,000/year), student loan repayment (up to $10,000 lifetime), or rolled into a Roth IRA (up to $35,000 lifetime, account must be 15+ years old).
Age-based portfolios automatically shift from aggressive stocks (80-100% equities) to conservative bonds as college approaches. For a newborn, starting aggressive can yield 7-8% average returns. By age 15, the portfolio should be mostly bonds at 3-4% to protect against market drops.
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Last Updated: Mar 25, 2026
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