No. There is no federal income-tax deduction for money you put into a 529. The federal benefit is that the account grows tax-free and qualified withdrawals (tuition, room and board, and so on) come out tax-free. The deduction or credit this tool estimates is purely a state benefit, and it exists in only about two-thirds of states. Contributions are treated as gifts for federal purposes: you can give up to $19,000 per donor per beneficiary in 2025 and 2026 without a gift-tax filing, or front-load five years at once ($95,000 single / $190,000 married electing) using the 5-year election.

Two different reasons, and the tool tells you which. Nine states have no state income tax at all (Alaska, Florida, Nevada, New Hampshire, which repealed its interest-and-dividends tax on 1 January 2025, South Dakota, Tennessee, Texas, Washington, which taxes only large capital gains, not wages, and Wyoming), so there is simply nothing to deduct against. A second group does tax income but chooses not to offer any 529 break: California, Hawaii, Kentucky, and North Carolina. In every one of these cases your 529 still grows federally tax-free; you just don't get an extra state-level reward for contributing.

A deduction lowers the income you're taxed on, so it's worth your marginal tax rate: a $10,000 deduction at a 5% state rate saves you $500, not $10,000. A credit is a dollar-for-dollar cut in your tax bill, so it doesn't depend on your bracket at all. Indiana's 20% credit is worth up to $1,500 whatever your rate. Most states use a deduction; Indiana, Utah, Vermont, Oregon, and Minnesota use a credit (Minnesota lets you take whichever of a deduction or a 50% credit is larger). The tool applies the right formula automatically for the state you pick, so it never mixes the two up.

In many states the deduction cap applies once per return; in a large group of others it applies per beneficiary (per child), which multiplies your cap. Arizona, Colorado, Georgia, Iowa, Kansas, Louisiana, Maine, Ohio, Pennsylvania, Utah, Vermont, Virginia (per account), and Wisconsin scale this way. Pennsylvania, for example, lets a couple deduct up to $38,000 per beneficiary, so three children means up to $114,000 of deductible contributions. Set the number of beneficiaries and the tool raises the cap accordingly for those states, and leaves it unchanged for per-taxpayer states.

Usually not. Most states only give the tax break for contributions to their own in-state plan, so shopping for a lower-fee out-of-state plan can cost you the deduction. A handful of 'tax parity' states (Arizona, Kansas, Maine, Minnesota, Missouri, Ohio, and Pennsylvania) let you deduct contributions to any state's plan, and Arkansas and Montana offer limited parity. The tool flags which rule applies to your state so you don't accidentally forfeit the benefit.

Owner-only states (including DC, Iowa, Montana, Nebraska, New York, Utah, and Virginia) give the tax benefit only to the person who owns the account, so a grandparent, aunt, or family friend who contributes to your child's account gets nothing unless they open and own their own. Recapture means that if you later take a non-qualified withdrawal, the state can claw back deductions or credits you claimed in earlier years; Illinois, New York, Vermont, and Virginia are examples. Both rules are surfaced for the state you select.

No. The optimizer runs entirely in your browser and stores nothing on our servers. There's no email box and no sign-up. Your inputs are only reflected in the page's web address so you can bookmark, share, or print your result; clear the link and they're gone.