New Mexico does have a state income tax

New Mexico taxes wages, salaries, and most other forms of income. The state has a progressive tax system, meaning the rate increases as your income rises. Tax rates range from 1.7% on the lowest bracket to 5.9% on the highest, depending on your filing status and total income for the year.

Unlike some states, New Mexico does not exempt military pensions, federal pensions, or Social Security income from taxation — though certain retirement income does receive preferential treatment under specific conditions. The state also taxes business income, investment income, and capital gains at ordinary income rates.

Key Takeaways

  • New Mexico's state income tax rates run from 1.7% to 5.9%, with rates determined by your income bracket and filing status.
  • You must file a New Mexico return if you lived in the state for any part of the tax year and earned income above the filing threshold.
  • Social Security benefits are taxable in New Mexico if your total income exceeds certain thresholds, unlike in many other states.
  • Military and federal pensions are subject to state income tax, though some retirement income may may have access to for a deduction.

Tax brackets and rates for 2024

New Mexico uses four filing statuses: single, married filing jointly, married filing separately, and head of household. Each status has its own income brackets and corresponding tax rates. The lowest bracket begins at 1.7%, and each successive bracket increases the rate until reaching 5.9% at the top.

Income brackets adjust annually for inflation. The exact dollar amounts that trigger each bracket change year to year, so your tax liability depends on both your income and the current year's bracket thresholds. The New Mexico Department of Revenue publishes updated brackets each January on its website.

Because brackets shift, your tax bill can change even if your income stays the same. A tax professional or the state's online tax calculator can show you where your specific income falls within the current year's brackets.

Who must file a New Mexico return

You must file a state return if you lived in New Mexico for any part of the tax year and your income exceeded the filing threshold for your status. The threshold varies by filing status and age. Generally, single filers under 65 must file if they earned more than a set amount; that threshold is higher for those 65 and older.

Even if you are not required to file, you may want to file anyway if you had taxes withheld from your paychecks or if you are may have access to to a state tax credit. Filing can result in a refund of overpaid taxes or allow you to claim credits you would otherwise miss.

Part-year residents — people who moved to or from New Mexico during the tax year — must file a New Mexico return for the months they lived in the state, even if they also file in another state.

Social Security and retirement income taxation

New Mexico taxes Social Security benefits if your total income, including half of your Social Security benefits, exceeds certain thresholds. These thresholds are lower than federal thresholds, meaning you may owe state tax on Social Security even if you owe no federal tax on it.

Military pensions and federal pensions are fully taxable as income in New Mexico. However, the state does allow a deduction for certain retirement income. Residents 55 and older may deduct up to $2,500 of retirement income per year, though this deduction has specific requirements and limitations based on the source of the income.

If you receive income from an Individual Retirement Account (IRA), 401(k), or similar retirement plan, that income is taxable. The state's retirement income deduction does not apply to all retirement sources, so review the rules for your specific situation.

How to file your New Mexico return

You can file your New Mexico return by mail or electronically. The state accepts federal Form 1040 along with a New Mexico return form. Most people file electronically through the state's website or through tax software that supports New Mexico returns.

The filing deadline is the same as the federal deadline: typically April 15 of the year following the tax year. If you file your federal return and request an extension, the extension applies to your state return as well.

If you owe New Mexico income tax, you can pay online, by mail, or through an authorized payment processor. The state also allows you to set up a payment plan if you cannot pay the full amount by the deadline.

Tax credits and deductions available in New Mexico

New Mexico offers several tax credits that can reduce your tax bill. These include credits for dependent care expenses, education-related costs, and certain types of charitable contributions. Some credits are refundable, meaning you can receive money back even if you owe no tax; others reduce your tax bill only to zero.

The state also allows a standard deduction, similar to the federal system. Your standard deduction amount depends on your filing status and age. If you are 65 or older, your standard deduction is higher than for younger filers.

Certain types of income may be excluded from taxation entirely. For example, some types of government assistance and specific scholarships do not count as taxable income. Review the state's tax guide or speak with a tax professional to determine which deductions and exclusions apply to your situation.

Frequently Asked Questions

Do I have to pay New Mexico income tax if I work remotely for an out-of-state company?

If you lived in New Mexico for any part of the tax year, you must file a state return and pay tax on your income, regardless of where your employer is located. The state taxes income earned by residents, not based on where the employer operates.

What if I moved to New Mexico partway through the year?

You file a part-year resident return and pay New Mexico tax only on income earned while you lived in the state. You may also owe tax to the state you moved from on income earned there. Both states' filing thresholds apply to your portion of the year in each state.

Can I deduct federal income tax paid from my New Mexico return?

No. New Mexico does not allow a deduction for federal income tax paid. You calculate your state tax based on your income and the state's brackets and deductions, independent of your federal tax liability.

Is there a penalty if I file late or pay late?

Yes. The state charges penalties for late filing and late payment. The penalty for late filing is typically 5% per month of the unpaid tax, up to a maximum. Interest also accrues on unpaid tax. If you cannot file by the deadline, request an extension to avoid these penalties.