IDAHO 529 PLAN · TAX YEAR 2026
Idaho 529 tax deduction calculator
Idaho lets you deduct up to $6,000 of contributions to Idaho's 529 plan, or $12,000 on a joint return. A single filer with $75,000 of wages who contributes $5,000 saves $265 of Idaho tax.
State tax saved
- Idaho tax saved
- $265.00
- Deduction
- $5,000.00
- Deduction limit
- $6,000.00
- Idaho tax before
- $2,866.72
- Idaho tax after
- $2,601.72
Idaho tax saved by contribution
With $75,000 of wages and one beneficiary.
| Contribution | Single | Married filing jointly |
|---|---|---|
| $1,000 | $53 | $53 |
| $5,000 | $265 | $265 |
| $10,000 | $318 | $530 |
| $20,000 | $318 | $636 |
Idaho 529 tax questions
Does Idaho have a 529 tax deduction?
Yes. Idaho lets you deduct up to $6,000 of contributions to Idaho's 529 plan, or $12,000 on a joint return.
How much does a $5,000 529 contribution save in Idaho?
$265 of Idaho tax for a single filer with $75,000 of wages, and $265 for a married couple filing jointly with the same income.
Which 529 plans qualify for Idaho's deduction?
Only IDeal, Idaho's 529 plan. Other states' plans are not eligible.
What happens to Idaho's deduction on a nonqualified withdrawal?
The whole withdrawal, contributions and earnings, is added to Idaho taxable income. Contributions must be made by December 31.
What the calculator leaves out
The calculator assumes the contribution goes to a plan that qualifies for the state's benefit: the state's own plan unless the state accepts any 529 plan. Wages are the only income, and they stand in for the income a state tests against its limits. Per-beneficiary limits assume the contribution is split evenly. Federal tax does not change, because 529 contributions aren't federally deductible. Carryforwards of earlier contributions, recapture on nonqualified withdrawals and city or school district taxes are left out.