529 Plan Tax Savings Calculator

529 plans grow tax-free for qualified education and offer state tax deductions in many states.

Annual contribution

State deduction limit

State tax rate %

Years to college

Annual growth rate %

Total tax savings

$29,314

Annual state savings

$500

Total at college

$249,155

How the math works

State savings = contribution × state rate × years. Federal: tax-free growth.

$10k × 5% = $500/yr × 15 yr = $7,500 state. $150k contributions grow to ~$248k = $98k tax-free growth.

How to Use

Enter annual contribution.
Enter state deduction limit.
Enter state tax rate %.
Enter years to college.
Enter annual growth rate %.
Read total tax savings.

Frequently Asked Questions

529 plan tax benefits?

Federal: tax-free growth and withdrawals for qualified education (tuition, room/board, books, K-12 up to $10k/yr, computers, internet). State: 30+ states offer deduction or credit for contributions ($2k–$10k+ deductible/yr depending on state). Beneficiary change: rollover to family member (sibling, parent, cousin). Excess: 10% penalty on earnings + ordinary income tax. SECURE 2.0: $35k lifetime rollover to Roth IRA after 15-year hold (subject to annual Roth limits). Front-load: 5-year gift tax averaging.

How is this tax impact computed?

Tax outcomes depend on filing status, income bracket, depreciation schedule, basis adjustments, AMT exposure, and state conformity. Real estate tax planning typically involves cost segregation, 1031 exchanges, opportunity zone, depreciation recapture, passive activity rules, and entity structure (LLC vs partnership vs S-corp). This calculator provides directional analysis — final position requires CPA review.

State conformity?

States vary on conformity to federal tax code: California, NY, MA decouple selectively. Bonus depreciation: most states reduce or eliminate. QBI: most states don't conform. Section 1031: federal-only deferral, some states require state-level recapture. Property tax cap: state-specific (CA Prop 13, MI Headlee, FL SOH). Multi-state property requires apportionment analysis.

When to prioritize this strategy?

Tax strategies have setup cost, complexity, and audit risk. Cost segregation: $5–15k study, materially helps high-basis investors. 1031: 45/180 day deadlines, identification rules, qualified intermediary fees. Opportunity Zone: long hold required. Stack strategies: don't double-count benefits. CPA + tax attorney coordination essential for $1M+ strategies.