Yes. Contributions to a Wisconsin 529 college savings account are deductible on your Wisconsin state income tax return, up to $5,280 per beneficiary for the 2026 tax year ($2,640 if you’re married filing separately). The deduction is only available for contributions to Wisconsin’s two official plans, Edvest 529 and Tomorrow’s Scholar, and any Wisconsin taxpayer who contributes can claim it, not just the account owner.1Wisconsin Department of Financial Institutions. Wisconsin 529 College Savings Program
How Much You Can Deduct
Wisconsin treats the contribution as a subtraction from federal adjusted gross income when calculating your state tax. The cap adjusts each year for inflation. For 2026, it’s $5,280 per beneficiary for single filers and married couples filing jointly, and $2,640 for married filing separately.1Wisconsin Department of Financial Institutions. Wisconsin 529 College Savings Program If you’re filing a prior year, the limits were $5,130 and $2,560 for 2025, and $5,000 and $2,500 for 2024.2Department Of Revenue. College Savings Accounts
The limit is per beneficiary, per contributor. Contribute to accounts for three different children, and you can deduct up to $5,280 for each in 2026. If you and your spouse both contribute to the same child’s account and file jointly, though, you share a single $5,280 for that beneficiary.
What that saves you depends on your bracket. Wisconsin’s income tax runs from 3.50% to 7.65% across four brackets.3Wisconsin Department of Revenue. DOR Tax Rates A full $5,280 deduction is worth roughly $404 at the top bracket and about $185 at the bottom. Multiply that across children and years and it adds up.
Who Can Claim It
You don’t have to own the account. Any Wisconsin taxpayer who makes a contribution can claim the deduction on their own return, up to the annual per-beneficiary cap. Grandparents, aunts, uncles, and family friends each get their own limit.1Wisconsin Department of Financial Institutions. Wisconsin 529 College Savings Program
So a grandparent and a parent could each put $5,280 into the same child’s account in 2026 and each deduct the full amount on their separate returns. The cap tracks the contributor, not the account balance.
Which Plans Qualify
Only contributions to a Wisconsin plan qualify. That means one of two accounts:
- Edvest 529, the direct-sold plan, opened online with as little as $25.
- Tomorrow’s Scholar, the advisor-sold plan, with a $250 minimum per investment option.
Contributions to another state’s 529 plan are not deductible in Wisconsin, even if the plan is otherwise sound.1Wisconsin Department of Financial Institutions. Wisconsin 529 College Savings Program If you currently hold funds in an out-of-state plan, you can roll the principal into Edvest or Tomorrow’s Scholar and claim the Wisconsin deduction on that rollover, subject to the same annual per-beneficiary cap.2Department Of Revenue. College Savings Accounts The lifetime contribution limit across both Wisconsin plans is $589,650 per beneficiary.
The Deadline and What Happens to Excess Contributions
You have until April 15 of the following year to contribute and still count it for the prior tax year. Contributions designated for 2025, for example, must be deposited by April 15, 2026.2Department Of Revenue. College Savings Accounts That window is useful if you’re waiting on a bonus or refund.
Contribute more than the annual cap for a beneficiary and the excess carries forward automatically. You claim it in a future year as long as the total deduction for that beneficiary in the claim year doesn’t exceed that year’s cap.2Department Of Revenue. College Savings Accounts Say you contribute $8,000 for one child in 2026: you deduct $5,280 that year and carry $2,720 into 2027, where you claim it (assuming new contributions don’t push you over the 2027 cap). There’s no expiration on carryforward amounts, which makes the rule especially handy for lump-sum gifts or an inheritance you want to deposit at once.
One boundary worth noting: if you front-load five years of gifts under the federal 529 gift tax election, the Wisconsin deduction still operates on the annual cap. A $95,000 lump sum only produces a $5,280 Wisconsin deduction in year one, with the rest carrying forward at the annual limit thereafter. Federal gift tax treatment and the state deduction run on separate tracks.
How to Report It on Your Wisconsin Return
Claiming the deduction takes two forms. Fill out Wisconsin Schedule CS with the beneficiary’s name and the amount contributed. That total flows to line 10 of Schedule SB, which handles all subtractions from income.4Wisconsin Department of Revenue. 2025 Schedule SB, Form 1 – Subtractions from Income The Schedule SB total then moves to line 6 of Form 1 (or Form 1NPR for part-year and nonresident filers), reducing the income used to compute your Wisconsin tax.5Wisconsin Department of Revenue. 2025 Schedule SB Instructions – Subtractions from Income
Before you file, pull together the account number, the account owner’s legal name, the beneficiary’s name, and the total you contributed during the year (plus any contributions made by April 15 that you’re designating to the prior tax year). Keep the plan’s year-end statements. If the Department of Revenue asks for proof, that’s what they’ll want to see.
You can e-file through the Department of Revenue’s My Tax Account system. E-filed returns with direct deposit typically produce refunds within about three weeks; paper returns take longer and can be delayed up to 12 weeks if flagged by fraud or error screening.6Wisconsin State Legislature. Electronic Filing – Paying Your Taxes or Receiving Your Refund – Common Questions
When You Have to Give the Deduction Back
The deduction isn’t unconditional. If you pull money out of a 529 account for something other than qualified education expenses, the federal government charges a 10% penalty on the earnings, and Wisconsin requires you to add back to state income any amount you previously deducted for contributions made after December 31, 2013, to the extent the withdrawal triggered the federal penalty.2Department Of Revenue. College Savings Accounts That reverses the state tax benefit for the amount involved.
Two other situations produce an add-back. Rolling 529 money into an ABLE account beyond the annual ABLE contribution limit adds the excess back to Wisconsin income. The same applies to a rollover to a Roth IRA that exceeds the applicable limits.2Department Of Revenue. College Savings Accounts A qualifying Roth rollover within those limits does not trigger Wisconsin tax or penalties.7Edvest 529. Rolling Unused Edvest 529 Savings to a Roth IRA And if you withdraw contributions within 365 days of making them, Wisconsin uses a first-in, first-out method to determine how much of the previously deducted amount comes back into income.
The add-back only touches contributions you actually deducted. If you put in more than the annual cap and never subtracted the excess from your income, that portion isn’t subject to recapture.