New Mexico 529 tax deduction in 2026
No dollar ceiling on the deduction, which makes the exit rules the part worth reading twice.
New Mexico tax saved on this contribution
$2,174
4.8 % of what you put in comes back on your 2025 return.
| Subtracted from state income | $45,000 |
| Your state marginal rate | 4.90 % |
| Cap that applies this year | no cap |
| Back per $1,000 contributed | $48 |
New Mexico: Unlimited deduction of contributions made during the year, per beneficiary, to a New Mexico-approved Section 529 plan (The Education Plan, Scholar's Edge); MFS spouses each take half of the joint deduction (PIT-ADJ line 15). Read on 2026-10-19. No federal deduction exists for 529 contributions.
| Taxable income | Marginal rate | Tax saved |
|---|---|---|
| $50,000 | 4.70 % | $1,866 |
| $100,000 | 4.90 % | $2,182 |
| $200,000 | 4.90 % | $2,205 |
| $400,000 | 5.90 % | $2,655 |
Worked out by Radif Partners · How we calculate · New Mexico rule read on October 19, 2026, brackets of tax year 2025 · not tax advice
New Mexico lets a taxpayer subtract the full amount contributed during the year to a New Mexico-approved 529 plan, The Education Plan or Scholar's Edge, with no dollar cap. The value is the state rate on each dollar, from 1.5 % on the first slice of income to 5.9 % above $210,000 for a single filer or $315,000 on a joint return. A grandmother at $96,000 who moves $45,000 of savings into an account in one year saves $2,174, because the subtraction pulls her income down through several brackets. A couple at $74,000 who put in $5,000 saves $235. Contributions to other states' plans are not deductible. The deduction comes back as income if the account is closed with a refund of contributions or rolled to a plan outside New Mexico. The plan says New Mexico aligns with all federal qualified uses, K-12 included; one beneficiary's accounts take deposits up to $500,000.
| Benefit for contributions | Deduction |
|---|---|
| Cap | No dollar cap |
| Another state’s plan counts | No, in-state plan only |
| State plans (official names, no recommendation) | The Education Plan, Scholar's Edge |
| Account balance limit | $500,000 |
| K-12 withdrawals qualified for state tax | Yes |
| 529 to Roth IRA rollover qualified | Not stated by the state |
| Student loan payments qualified | Yes |
| Add-back on a rollover to another state’s plan | Yes |
A deduction that follows the deposit, however large
Line 15 of New Mexico's PIT-ADJ schedule takes off income the contributions made during the year to an approved plan, counted per beneficiary, with no maximum printed in the instructions. Where a state caps its deduction, a large one-time deposit earns no more than a modest one once the cap is reached. Here a lump sum keeps lowering the tax until there is little income left to lower.
The flip side is that the saving per dollar falls as the deduction digs into lower brackets. The grandmother above deducts $45,000 and saves $2,174, or 4.83 % of the deposit, below her 4.9 % marginal rate. Splitting the same money over two tax years, December and January, keeps more of it at the higher rate.
One large New Mexico deposit
New Mexico tax saved on this contribution
$2,174
| Subtracted from state income | $45,000 |
| Your state marginal rate | 4.90 % |
| Cap that applies this year | no cap |
| Back per $1,000 contributed | $48 |
A couple at $330,000, in the 5.9 % bracket, who put $70,000 across three grandchildren's accounts, save $3,580. Large gifts like that also raise the federal gift question; the five-year election page covers it. Spouses filing separately each take half of what a joint return would deduct.
Two approved plans, nothing for the rest
The Education Plan, sold directly, and Scholar's Edge, sold through advisors, are the only programs New Mexico counts. The Las Cruces couple saving $5,000 would deduct nothing with another state's plan, $0 instead of $235.
How the deduction comes back
Line 3 of the same schedule adds earlier deductions back to income in two cases: the account is closed and contributions are refunded, or contributions are rolled over to a 529 plan outside New Mexico. If the Las Cruces couple deducted $30,000 over the years and then moved the account to another state's plan, they would owe about $1,410 at today's rate. Earnings in a non-qualified withdrawal are taxed through federal adjusted gross income, the starting point of the New Mexico return.
New Mexico add-back on a rollover out
New Mexico tax if the deductions come back
$1,410
| Amount added back | $30,000 |
| Your state marginal rate | 4.70 % |
K-12 and the 2025 federal changes
The Education Plan's description says K-12 tuition, apprenticeship costs and student loan repayments became qualified uses for New Mexico tax in 2023, with no add-back after June 16, 2023, and a September 2025 supplement says state law is designed to align with every qualified use under Section 529, which would cover the $20,000 K-12 limit from 2026 and credential programs. That statement comes from the state-run plan; we did not see it in a publication of the Taxation and Revenue Department. Whether a rollover to a Roth IRA counts as qualified for New Mexico is not named in either source.
The $500,000 balance limit comes from the plan description of February 2023; we found no supplement changing it. Bracket thresholds below the 4.9 % rate were derived from the slope of the state's 2025 tax table rather than read from a printed schedule.