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New Mexico Income Tax for Business Owners: Rates, Pass-Through Income and the PTE Election

New Mexico Income Tax for Business Owners: Rates, Pass-Through Income and the PTE Election

New Mexico taxes business income in one of two ways. Most owners of sole proprietorships, partnerships, S corporations and default LLCs report their share of business profit on their personal return, Form PIT-1, at the state's graduated personal income tax rates. Regular C corporations pay a flat 5.9% corporate income tax. A third option, the pass-through entity tax (PTE) election, lets certain entities pay the tax at the entity level instead. This guide explains the rates, which entities are taxed which way, and what the PTE election involves.

Disclaimer: This guide is informational only. It is not legal, tax or accounting advice. Tax treatment depends on your entity type, ownership, where you earn income and your federal situation. Consult a qualified CPA or tax attorney before you file or make an election.

New Mexico personal income tax rates

New Mexico's personal income tax is graduated. For tax years beginning on or after January 1, 2025, it has six rates, running from 1.5% at the bottom to 5.9% at the top. Searches for new mexico income tax rate or nm income tax rate usually turn up the top rate, and that rate is the one most owners need to plan around.

The 5.9% top rate applies to taxable income above these thresholds:

Filing status 5.9% top rate applies to taxable income above
Single filers $210,000
Joint filers $315,000

The thresholds for the other brackets between 1.5% and 5.9% are not printed here. They change by tax year, so take them from the rate table in the current PIT-1 instructions published by the New Mexico Taxation and Revenue Department (TRD) at https://www.tax.newmexico.gov/. Check the table for the year you are filing, not the year you last filed.

A few points about the new mexico state income tax structure matter for owners:

  • The rate schedule applies to taxable income, not gross receipts. Business expenses reduce the profit that flows onto your return.
  • Your marginal rate is set by your total taxable income from all sources, including wages, business profit and investment income, so a large business year can push part of your income into the higher brackets.
  • The top rate is reached only on the portion of income above the threshold for your filing status. Bracket math is not a flat rate on everything you earn.

Who reports business profit on the personal return

Business profit from the following structures is reported on PIT-1 and taxed at the personal rates:

  • Sole proprietors, including people who operate under a trade name. New Mexico has no statewide DBA or assumed-name registration, so a trade name by itself does not change how the income is taxed.
  • Partners in a general or limited partnership. Each partner reports a share of the partnership's profit.
  • S corporation shareholders. The corporation files its own return, but the income passes through to each shareholder's PIT-1.
  • Default LLC owners. An LLC that has not elected to be taxed as a corporation is taxed as a sole proprietorship (one owner) or a partnership (more than one owner). Its members report their share on PIT-1.

For these owners, the entity itself usually pays no separate New Mexico income tax. The profit is taxed once, on the owner's personal return. That is what "pass-through" means in practice.

Business owners also need a Business Tax Identification Number (BTIN) from TRD. The BTIN, which replaces the former CRS identification number, is free. It is a tax registration, not a license. New Mexico issues no general statewide business license, so the BTIN does not authorize you to operate. Cities and some counties may charge their own flat annual registration, and some professions need licenses from the Regulation and Licensing Department. Confirm those requirements locally before you open.

Corporations pay a flat 5.9%

A C corporation pays New Mexico corporate income tax at a flat 5.9% of taxable income for tax years beginning on or after January 1, 2025. Corporations also owe a $50 annual corporate franchise tax, reported on Form CIT-1. The corporation's shareholders are not taxed again on the same profit at the state level until they receive dividends or other distributions, and those distributions are then taxed under their personal return rules.

Corporations also have a reporting obligation with the Secretary of State. The first corporate report is due within 30 days after the certificate of incorporation is issued, and corporate reports are then filed biennially, with a $25 fee. An LLC has no annual or biennial report and no LLC franchise tax. An LLC that elects to be taxed as a corporation files Form CIT-1 and owes the $50 annual corporate franchise tax, so the election changes both the tax and the filing calendar.

Before you choose a corporate structure for tax reasons, have a CPA run the numbers for both the flat corporate rate and the personal rates your owners would pay on distributions.

What the pass-through entity tax (PTE) election is

The PTE election is an option for some pass-through businesses. Instead of each owner paying tax on their share of profit, the entity pays New Mexico tax at the entity level, at 5.9% of the income apportioned to New Mexico. The owners then get a credit for that tax on their own returns.

The following entities may elect PTE:

  • Partnerships
  • S corporations
  • LLCs taxed as partnerships
  • LLCs taxed as S corporations

Single-owner LLCs are not eligible unless they are taxed as S corporations. An LLC taxed as a sole proprietorship with one owner does not qualify.

Several rules set the election apart from an ordinary filing choice:

  • It is made annually on the Form PTE return.
  • It binds all owners. The entity makes the election for everyone, so an owner cannot opt out on their own.
  • Owners claim a credit for their share of the entity-level tax, and they add the amount back into their income on PIT-1. The add-back and the credit work together so the tax is not counted twice.
  • Payment is due by the federal return due date for the entity. Confirm the exact payment and filing deadlines in the Form PTE instructions on the TRD website before you rely on them.

The main reason owners consider the PTE election is federal, not state. The federal limit on the deduction for state and local taxes (the SALT cap) restricts how much state income tax an individual owner can deduct on their federal return. Paying tax at the entity level can change how much of the New Mexico tax is deductible federally, depending on the owner's situation and the rules in effect for that year. The state effect is usually modest, and the federal effect is what makes the election worth studying.

Because the outcome depends on federal rules, the owner's other income, the apportionment of income to New Mexico and how each owner's credit flows through, the PTE election is a question for a CPA. Do not make the election based on a rule of thumb.

A simplified example

Suppose a two-owner LLC taxed as a partnership earns $100,000 of income that is fully apportioned to New Mexico. If the partnership makes the PTE election, the entity-level tax at 5.9% would be $5,900. Each owner would claim a credit for their share of that tax on their PIT-1 and add their share back into income.

This example is deliberately simplified. It ignores apportionment, business deductions, the owners' other income, each owner's filing status and the federal treatment of the payment. Real results can differ substantially from this arithmetic. Treat the example as a starting point for the conversation with your CPA, not as a forecast of your tax.

Gross receipts tax is separate from income tax

New Mexico has no sales tax. Instead, it imposes a gross receipts tax on the seller. The state gross receipts tax rate is 4.875%, and combined state and local rates run from 5.25% to 9.4375% under the schedule effective July 1, 2026 through June 30, 2027. Gross receipts tax is a tax on the business's sales, paid on a separate filing from the income tax return. Many new owners confuse the two. Registering with TRD for a BTIN is how you set up both.

Steps to get your New Mexico income tax right

  1. Confirm your entity type. Check whether your LLC is taxed as a partnership, sole proprietorship, S corporation or C corporation. The default treatment and the election treatment lead to different returns.
  2. Register with the Secretary of State. File Articles of Organization ($50) or Articles of Incorporation ($100) through the SOS Enterprise Business Filing System at https://enterprise.sos.nm.gov/. Use the business search at https://enterprise.sos.nm.gov/search to confirm the name is available.
  3. Get your BTIN from TRD. It is free. Use the registration guidance at https://www.tax.newmexico.gov/businesses/who-must-register-a-business/ to confirm which registrations you need.
  4. Keep books by entity and by owner. Track each owner's capital and allocated profit so the PIT-1 and any PTE credit calculations can be prepared from the records.
  5. Decide on the PTE election with a CPA before the entity's first return where it would apply, and record the decision in the entity's records.
  6. Calendar your deadlines. The personal return, the entity return and any PTE payment are separate obligations. Confirm each due date on the TRD website for the year in question.

Common mistakes owners make

  • Assuming an LLC pays its own income tax. A default LLC usually does not. Its members report their share of profit on PIT-1.
  • Using last year's rate table. The tax year determines which rates and thresholds apply. Pull the PIT-1 instructions for the year you are filing.
  • Treating the BTIN as a license. The number lets you file tax returns. It does not replace a city registration or a profession license.
  • Electing PTE without checking owner credits. Because the election binds all owners and changes how each owner's credit works, a decision made for one owner can affect the others.
  • Confusing gross receipts tax with income tax. They are separate taxes with separate returns and separate rules.

Questions to take to your CPA

Bring specific information to the meeting. Useful questions include:

  • Is the PTE election worth making this year, given my federal SALT situation and my co-owners' situations?
  • How much of the entity's income is apportioned to New Mexico, and what records support that figure?
  • What is my marginal rate across my wages, business profit and investment income?
  • Would electing S corporation or C corporation treatment change my total tax after owner distributions?
  • What New Mexico deadlines apply to my entity, and which ones depend on the federal return?

Official New Mexico resources

Disclaimer: This guide is informational content, not legal or tax advice. Rates, thresholds and deadlines change, and the figures here reflect the rules as stated for tax years beginning on or after January 1, 2025. Confirm current rates with the Taxation and Revenue Department and filing requirements with the Secretary of State before you act, and consult a qualified CPA or attorney for your situation.

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