How the Iowa 529 (ISave 529) really works: the $6,100 state tax deduction, new K-12 and Roth rollover rules, and smart moves for parents and grandparents.
If you've got kids or grandkids, somebody has probably told you to “put money in a 529.” And so before we get into the how, let's start with the question we ask about every account: what's this money for? If the answer is education — college, trade school, maybe private school tuition along the way — the Iowa 529 is one of the best deals going. Iowa gives you a state tax deduction on the way in, the money grows tax-free, and it comes out tax-free for school. Let's walk through it.
Iowa's 529 plan is called ISave 529 — you might know it by its old name, College Savings Iowa. Same plan, new name. It's run by the State Treasurer's office, and the money goes into low-cost Vanguard index funds. If you've read anything else we've written, you know that's music to our ears: just own the whole market, keep costs low, and let the snowball roll. The costs in ISave 529 are a small fraction of what advisor-sold plans charge — Iowa has one of those too (the IAdvisor 529), but for most people we'd point you to the direct ISave 529 and skip the extra fees.
One thing to know: you don't have to use Iowa's plan, and the money isn't stuck in Iowa schools. A 529 can pay for college, trade school, and apprenticeship programs all over the country. But if you live in Iowa, there's a very good reason to use Iowa's plan, and that's the deduction.
For 2026, each Iowa taxpayer can deduct up to $6,100 per beneficiary from their Iowa taxable income (the number bumps up a little each year with inflation). The neat part is how it stacks. A married couple with two kids can each contribute to an account for each child — that's four accounts, four deductions, up to $24,400 off your Iowa income. At Iowa's flat tax rate, that's a bit over $900 back in your pocket, every single year you do it. We have to pay our share, but we don't have to leave a tip — and that goes for Des Moines as much as it does for Uncle Sam.
The other part of that is the deadline: you have until the Iowa tax-filing deadline (generally April 30) to make a contribution that counts for the prior tax year. So even if the calendar has flipped, you may not have missed the boat.
The list of qualified expenses has grown quite a bit, and 2026 brought some real changes:
Some of the happiest money conversations we have are with grandparents who want to help. A few things worth knowing:
The number one worry we hear: “What if my kid doesn't go to college? Is the money trapped?” It's a fair question, and the answer got a lot better. Leftover 529 money can now be rolled into a Roth IRA for the beneficiary — up to $35,000 over their lifetime. There are guardrails: the account has to be at least 15 years old, money contributed in the last 5 years can't move, the rollover counts against the annual Roth contribution limit each year, and the kid needs earned income that year. So it's a multi-year process, not one big transfer. But picture this: your kid gets a scholarship, and the “leftover” college money becomes a head start on tax-free retirement savings in their 20s. The best time to plant a tree was 20 years ago — and a Roth started at 22 has a lot of years to grow.
And if there's still money beyond that? You can change the beneficiary to another family member — a sibling, a cousin, even yourself — or just take it out (you'll owe income tax plus a 10% penalty on the earnings, and Iowa will want its deduction back on a non-qualified withdrawal).
We'll be honest with you — mostly no, but sometimes yes. A few situations where we pump the brakes:
The other thing to watch is the investment mix. A 529 for a newborn has 18 years of runway — it can ride the roller coaster. A 529 for a high school junior shouldn't be 100% stocks, because you'll be writing tuition checks before any downturn has time to recover. The age-based options inside ISave 529 handle that glide for you automatically, and for most families that's the right answer.
For Iowa families, the math is hard to beat: a state tax deduction going in, tax-free growth in low-cost index funds, tax-free withdrawals for a list of expenses that keeps getting longer, and a Roth escape hatch if plans change. Does that make sense for your situation? That depends on your goals, your retirement picture, and what this money is for — and that's a conversation we'd be glad to have. No pressure, no products, just a flat fee and straight answers.
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Up to $6,100 per beneficiary, per taxpayer, from your Iowa taxable income. A married couple contributing for two children could deduct up to $24,400. The amount adjusts for inflation each year.
Yes — College Savings Iowa was renamed ISave 529. Same plan, same Vanguard investments, same tax benefits.
No, but only contributions to Iowa's own plans qualify for the Iowa state tax deduction. For Iowa residents, that deduction usually makes ISave 529 the best starting point.
Yes — starting in 2026, up to $20,000 per year per student can go toward K-12 tuition and an expanded list of expenses like tutoring and test fees. Confirm the Iowa tax treatment of newer expense categories with your tax preparer.
You have options: change the beneficiary to another family member, roll up to $35,000 into a Roth IRA for the beneficiary over time (the account must be 15+ years old), use it for trade school or apprenticeships, or withdraw it and pay tax plus a 10% penalty on earnings.
Absolutely — and each grandparent gets their own $6,100-per-grandchild Iowa deduction. Under the current FAFSA rules, grandparent-owned 529 withdrawals no longer hurt the student's financial aid.
You can contribute up until the Iowa tax-filing deadline (generally April 30) and count it for the prior year.
ISave 529 uses low-cost Vanguard index funds, and its fees are among the lowest of any 529 plan in the country — a fraction of what advisor-sold plans charge. Costs compound just like returns do, so this matters more than people think.