529 Plan State Tax Deduction Calculator
Estimate your immediate 2026 tax savings and understand the state-level benefits of saving for education.
Last updated: April 2026
What is a 529 Plan?
A 529 plan is a tax-advantaged savings plan designed to encourage saving for future education costs. Named after Section 529 of the Internal Revenue Code, these plans are sponsored by states, state agencies, or educational institutions.
While there is no federal tax deduction for contributions, over 30 states offer some form of tax deduction or credit for your contributions.
How to use this calculator
- 1Select Your State — Choose the state where you file your income tax returns.
- 2Enter Contribution — Input the total amount you plan to deposit into the 529 account this year.
- 3Estimate Tax Rate — Use your state's marginal tax rate (typically 3% to 9%).
- 4View Savings — The results show how much your state tax bill will be reduced.
Formula & example
Savings = Min(Contribution, State Limit) × State Tax Rate
In New York, you can deduct up to $5,000 for single filers. If you contribute $5,000 and your NYS tax rate is 6%, you save $300 on your state tax bill.
Benefits
Immediate Savings
The state tax deduction provides an instant 'return' on your investment.
Tax-Free Growth
Earnings in the plan are not subject to federal or state tax if used for education.
Broad Use
Funds can be used for K-12 tuition, college, vocational schools, and even apprenticeship programs.
Use cases
New Parents
Start small and let time do the heavy lifting with tax-free compounding.
Grandparents
529 contributions are a great estate planning tool for gifting to grandchildren while reducing your own state taxes.
Frequently asked questions
What are 'Tax Parity' states?+
Some states (like PA or AZ) allow you to deduct contributions to ANY state's 529 plan, not just their own.
What if the beneficiary doesn't go to college?+
You can change the beneficiary to another family member, or use the new 529-to-Roth IRA rollover provision.