New Mexico’s Form ACD-31015 is the free application you file with the Taxation and Revenue Department to register your business and receive a New Mexico Business Tax Identification Number (NMBTIN). You can submit it online through the Taxpayer Access Point, mail it to Santa Fe, or hand it in at a district office. The form is five pages, but much of that is instructions; the fields themselves move quickly once your paperwork is in front of you.
Who Has to File It
Any person or entity engaging in business in New Mexico for direct or indirect benefit needs to register before reporting or remitting taxes.1Justia. New Mexico Code 7-1-12 – Identification of Taxpayers That includes sole proprietors, partnerships, LLCs, corporations, nonprofits, trusts, and government entities. The same form covers many tax programs beyond gross receipts tax, so employers, buyers from out-of-state vendors, motor carriers, and specialized industries such as cannabis and telecommunications all use ACD-31015 to get on the department’s books.2New Mexico Taxation and Revenue Department. Business Tax Registration Application ACD-31015
Remote Sellers
If you have no physical presence in New Mexico, you still need to register once your taxable gross receipts sourced to the state hit $100,000 in the previous calendar year. Sales made through a marketplace that collects the tax for you do not count toward that threshold. Once you cross it, you must begin collecting and remitting gross receipts tax starting January 1 of the following year, using this same form to register.3New Mexico Taxation & Revenue Department. Who Must Register a Business?
What to Gather Before You Start
Pull these together first so you can work straight through the form:2New Mexico Taxation and Revenue Department. Business Tax Registration Application ACD-31015
- Your federal tax identifier: FEIN, Social Security Number, or ITIN.
- Your legal entity name exactly as it appears on your Secretary of State formation documents, plus any trade or “doing business as” name.
- Your NAICS code for your primary business activity. You can find it on your federal return or at naics.com.
- Physical and mailing addresses, with the county for each.
- Names, titles, and contact details for all officers, members, or partners with a significant interest.
- The date you began or will begin taxable activity in New Mexico.
Working Through the Form
Download the form from the department’s website or pick up a paper copy at any district office. A few sections tend to trip filers up.
Reason for Filing
The first question asks why you are submitting the form: new business, change of ownership, adding a tax program to an existing account, or updating previously filed information. Choosing “new business” when you are actually taking over an existing operation can create a duplicate account and delay your registration, so pick the option that matches what is really happening.
Entity Type
The ownership section lists more choices than most people expect. Beyond corporation, LLC, and partnership, the form has separate checkboxes for S corporations, general and limited partnerships, estates, trusts, government entities, Indian tribes, and nonprofits, with sub-options for 501(c)(3) and 501(c)(4) organizations.2New Mexico Taxation and Revenue Department. Business Tax Registration Application ACD-31015 Check the one that matches your formation documents. If you formed an LLC but elected S corporation treatment with the IRS, choose the option that reflects your state-level legal structure, which is typically LLC.
Tax Programs
Section 11 is where you select every tax program that applies. Most businesses need at least gross receipts tax, and the full list on the form includes:2New Mexico Taxation and Revenue Department. Business Tax Registration Application ACD-31015
- Gross receipts tax, the main business tax on receipts from selling property or services.
- Compensating tax, sometimes called use tax, on property or services bought from out-of-state vendors who did not charge gross receipts tax.4New Mexico Taxation & Revenue Department. Compensating Tax
- Wage withholding tax, required if you have employees.
- Non-wage withholding tax, covering payments like rents, royalties, or other non-wage compensation.
- Corporate income and franchise tax.
- Cannabis excise tax for licensed cannabis businesses.
- Weight distance tax for motor carriers on state highways.
- Workers’ compensation fee.
- Specialized programs including interstate telecommunications GRT, leased vehicle GRT and surcharge, and governmental GRT.
Check every program that applies now. If circumstances change later, such as hiring your first employee six months in, you can file an updated ACD-31015 to add the program without starting over.
Filing Frequency
The form asks how often you will file returns. The right answer depends on your expected combined gross receipts, compensating, and withholding tax:5New Mexico Taxation and Revenue Department. GRT Filer’s Kit
- Monthly filing is required if your combined taxes average more than $200 per month. Returns are due by the 25th of the following month. You may elect monthly even at lower volumes.
- Quarterly is available if combined taxes for the quarter are under $600. Returns are due by the 25th of the month after the quarter ends.
- Semiannual is available if combined taxes for the six-month period are under $1,200. Returns are due by the 25th of the month after the period ends.
If you are brand new and unsure of your volume, monthly is the safe pick. You can request a change once you have real numbers.
Signature
An authorized representative must sign and date the form. The signer needs legal authority to bind the business to tax obligations, meaning an owner, officer, or someone holding power of attorney. Unsigned forms are rejected and returned, so double-check before you send it off.
Three Ways to Submit
There is no filing fee whichever channel you pick.
Online Through TAP
The fastest route is the Taxpayer Access Point at tap.state.nm.us. The department’s online services page has a link labeled “Apply for a New Mexico Business Tax ID” that walks you through registration.6New Mexico Taxation & Revenue Department. Online Services Electronic filings skip the mail queue and cut down on data-entry errors.
By Mail
Send the completed form to:
Taxation and Revenue Department
PO Box 5374
Santa Fe, NM 87502-5374
Paper applications are processed in the order received. Keep a copy of what you mail, and certified mail gives you proof of delivery.
In Person
You can drop off the form at district offices in Albuquerque, Farmington, Las Cruces, Roswell, or Santa Fe. In-person visits currently require an appointment, booked through TAP or by calling 1-866-285-2996.7New Mexico Taxation & Revenue Department. Contact Information The upside is that staff can flag obvious problems, like a missing signature, before you leave.
After You Submit
Once the department processes your application, you receive an official registration certificate with your NMBTIN. Keep it somewhere you can find it: banks, vendors, and government agencies routinely ask for it before opening commercial accounts or awarding contracts, and you will need the number every time you file a return or contact the department.
If the department spots errors or missing information, it will send a notice asking for clarification. Respond quickly. Ignoring these notices delays your registration and can leave you operating without a valid tax account. You also need to notify the department when your business structure changes, you add a location, or you close down. Filing an updated ACD-31015 keeps your account current and prevents estimated assessments based on stale information.
What It Costs to Skip Registration
Operating without registering carries real financial exposure. A business that fails to file returns or pay taxes when due faces a penalty of 2% per month, or any fraction of a month, on the unpaid tax, capped at 20% of the amount owed. The minimum penalty is $5.8Justia. New Mexico Code 7-1-69 – Civil Penalty for Failure to Pay Tax or File a Return
If the department determines the failure was willful, the penalty jumps to 50% of the tax owed or $25, whichever is greater.8Justia. New Mexico Code 7-1-69 – Civil Penalty for Failure to Pay Tax or File a Return No penalty applies if the failure resulted from a good-faith mistake about what the law required, but that is a narrow defense, and not knowing you had to register rarely qualifies on its own. File ACD-31015 before you start conducting business, or within a few days of reaching the $100,000 economic nexus threshold if you are a remote seller.