Montana 529 Plan Rules And College Savings Options

Montana 529 Plans At A Glance

Montana 529 Tax Deduction And Tax Rules

For tax year 2026, each Montana taxpayer can deduct up to $4,600 in 529 contributions, or $9,200 on a joint return if both spouses contribute or the money comes from joint funds (Montana Department of Revenue). The deduction covers Achieve Montana and other states' 529 savings plans, but not prepaid tuition plans, and House Bill 845 now indexes the limit to inflation each year (Montana Department of Revenue). Our state-by-state 529 tax deduction table shows how that compares with neighboring states.

The deduction is available only in the year you contribute, and only if you, your spouse, or your Montana-resident child or stepchild owns the account (Mont. Code Ann. 15-30-2120). Growth is tax-deferred and qualified withdrawals are tax-free, including for an out-of-state college, which our list of qualified 529 plan expenses breaks down.

Montana's churning rule is a one-year account-age test. State law applies the recapture tax to any withdrawal "from an account that was opened after the date that is 1 year prior to the date of the withdrawal," even a qualified one, on the part that came from deducted contributions (Mont. Code Ann. 15-62-208), and the Revenue Department and Achieve Montana's disclosure repeat the one-year test (Achieve Montana). Families with an account open more than a year can route tuition money through it and keep the deduction, while a brand-new account can't be used that way, as our breakdown of 529 plan churning and withdrawal limits explains.

Montana fixed its Roth rule in 2025. Legislation passed May 8, 2025 treats 529-to-Roth IRA rollovers as qualified for Montana purposes, retroactive to tax years beginning after December 31, 2023, so they aren't subject to Montana income tax or recapture (Achieve Montana). Read our 529-to-Roth IRA rollover rules for the federal 15-year and $35,000 limits.

The Revenue Department lists K-12 tuition up to $20,000, apprenticeship costs, student loan payments, and professional credential expenses as qualified expenses under the federal definition (Montana Department of Revenue). It also says the 2025 federal changes don't alter the size of the Montana deduction (Montana Department of Revenue). Our breakdown of the 2026 529 plan expansion covers what changed federally.

How Montana's 529 Plan Ranks

Montana ranks 31st of the 50 state plans in our best 529 plans rankings, which include Washington, D.C., with a 61.9% net return on investment. Our Net ROI score models $100 a month for 10 years at a 5% annual return, subtracts plan fees, and reinvests the value of the state tax break each year. Montana's 5.7% tax break is one of the better ones in the region, but Achieve Montana's 40 basis point fee is among the highest in the rankings and drags the score down.

Montana residents can read this table differently than most. Each state's score assumes a taxpayer in that state using its own plan, but Montana gives the deduction for contributions to any state's 529 plan, so a Montana family can keep the tax break and pick a plan with lower fees than Achieve Montana. Wyoming doesn't sponsor a plan and isn't ranked, and the full rankings table lists all 50 state plans.

The gap with the top of the list comes down to two levers Montana controls. Indiana's 20% tax credit is what puts it at #1, and Achieve Montana's fees keep it in the bottom half even with a solid deduction, so lower fees would move Montana families up. If that matters to you, share these numbers with your state legislators, and use our 529 plan tax deductions by state table to show how other states reward savers.

Should Montana Residents Use Achieve Montana?

It depends on fees, not taxes. Because Montana's deduction applies to any state's 529 savings plan (Mont. Code Ann. 15-30-2120), a Montana family gives up nothing on the state return by picking a lower-cost plan, and our list of the best 529 plans shows several that cost less than Achieve Montana's 0.41%. Achieve Montana still makes sense for families who want a local plan with no account fee and simple age-based portfolios.

Families who already hold an Achieve Montana account should think before moving it, because the plan says Montana may impose recapture on a rollover to another state's plan (Achieve Montana). A cleaner move is to leave the existing account in place and send new contributions to the lower-cost plan, and our explainer on 529 plan rollovers and transfers covers the once-per-year federal limit. Our multiple 529 plans in multiple states explainer covers running two accounts for one child.

Four years at a Montana public university runs about $91,000 on campus, so the average Achieve Montana balance of about $20,300 covers less than one year. Our Montana college costs and financial aid breakdown lists costs by school, and our 529 savings benchmarks by age show what to aim for.

Montana 529 Plan Details

Achieve Montana is run by Ascensus College Savings under the Montana Board of Regents of Higher Education, which serves as trustee (Montana University System). As of June 30, 2026, Achieve Montana held $285.9 million across 14,108 open accounts, which ranked Montana 49th among the states in 529 assets (The 529 Network). Our 529 plan and college savings statistics show how that compares nationally.

Other Montana College Savings Programs

Upromise. Upromise lets you earn money for your Achieve Montana account through rebates and rewards on everyday spending, and the Upromise credit card sends cash back straight into your child's 529 plan (Upromise). You can link an Achieve Montana account to your Upromise profile, so the rewards stack on top of Montana's state tax deduction.

Tax refund deposits. Montana taxpayers due a refund can send all or part of it straight into an existing Achieve Montana account or another state's 529 plan when they file (Montana Department of Revenue). The account has to exist before you file, and first-time Montana filers get a paper check instead, so our 529 plan contribution limits page is worth a look before you plan a large deposit.

Montana ABLE. Montana residents with disabilities can save in Montana ABLE, a 529A account administered by the Montana Department of Public Health and Human Services with Ascensus as program manager (Montana ABLE). Contributions are deductible up to $3,000, or $6,000 for joint filers (Montana Department of Revenue), and our 529 plan overview compares ABLE accounts with regular college savings.

Leftover money. Families with money left after college can change the beneficiary to a sibling, pay down student loans, or roll to a Roth IRA, which Montana no longer taxes or recaptures. Our list of what to do with leftover 529 money covers each option, and Montana graduates in health care, teaching, or law should also check Montana student loan forgiveness programs.

Frequently Asked Questions

Related Montana Resources

How We Sourced This Data

Plan details on this page come from the plan and the state: the Achieve Montana website and FAQ, the Achieve Montana Program Description with supplements through June 2026, The 529 Network 529 plan data as of June 30, 2026, the Montana University System's 529 FAQ, and Montana ABLE. Tax rules come from the Montana Department of Revenue's 529 and ABLE deduction pages, its September 2025 legislative roundup on House Bill 845, and Montana Code Annotated sections 15-30-2120, 15-62-103, 15-62-207, and 15-62-208. The college cost figure comes from our Montana financial aid page, which draws on institutional cost pages and NCES IPEDS data. Read more about how we fact-check and update content.

Page refreshed annually in September, after Achieve Montana publishes its updated fee schedule, and reviewed in January for tax season. Last full refresh: September 24, 2026.