Montana 529 Tax Deduction Calculator
2026 rulesEnter your contribution to see how much Montana lets you deduct and what it saves you this year.
Your numbers
Result
Montana tax saved
- Total contributed$5,000
- Deductible this year$5,000
- Montana tax saved this year$235
- Saved per $1,000 deducted$47.00
The cap rises with inflation each year. Contributions to accounts you, your spouse or your child own qualify.
Montana at a glance
- Benefit
- Montana lets you deduct up to $4,600 ($9,200 joint) of contributions to Achieve Montana each year.
- Plans that count
- Achieve Montana.
- Good to know
- The cap rises with inflation each year. Contributions to accounts you, your spouse or your child own qualify.
Questions
Is there a Montana tax deduction for 529 contributions in 2026?
Montana lets you deduct up to $4,600 ($9,200 joint) of contributions to Achieve Montana each year.
What can 529 money pay for without tax?
College tuition, fees, books, and room and board for students enrolled at least half time; up to $20,000 a year of K-12 tuition and expenses from 2026; apprenticeship costs; and up to $10,000 of student loan payments over a lifetime. States can treat some of these differently.
What happens to the Montana deduction if I withdraw for something else?
A nonqualified withdrawal is taxed on its earnings, plus a 10% federal penalty, and Montana can add back the deductions you took on the money you withdraw.