How to Complete New Mexico Form ACD-31075: Updates, Submission, and Pitfalls

New Mexico Form ACD-31075, the Business Tax Registration Update, is how you tell the Taxation and Revenue Department (TRD) about changes to an existing business tax account: a new address, a new business structure, added or dropped tax types, or a full closure. There is no fee to file it, and you can submit the update online through the Taxpayer Access Point (TAP) portal or mail a paper form to the TRD in Santa Fe.1Taxation and Revenue New Mexico. Who Must Register a Business

ACD-31075 or ACD-31015?

Before you start, check which form you actually have in front of you. ACD-31075 is the older standalone update form, still hosted on some state agency websites.2New Mexico Film Office. Business Tax Registration Update ACD-31015 is the current combined Business Tax Registration Application and Update Form, which handles both new registrations and changes to existing accounts.3New Mexico Taxation and Revenue Department. Business Tax Registration Application and Update Form The fields overlap heavily, and the TRD accepts both. If you file online through TAP, you don’t touch either paper form; the system walks you through the update directly.

What to Have Ready Before You Start

Missing identifiers are the main reason an update gets rejected or sent back. Pull these together first:

  • Your New Mexico Business Tax Identification Number (BTIN). This is the account number the TRD assigned at your original registration. Older paperwork may call it the CRS (Combined Reporting System) Identification Number; it’s the same number under a different name. Look on prior CRS-1 returns or any TRD correspondence.
  • Your Federal Employer Identification Number (FEIN). Sole proprietors without an FEIN can use their Social Security Number or Individual Taxpayer Identification Number.3New Mexico Taxation and Revenue Department. Business Tax Registration Application and Update Form
  • Your legal business name exactly as it appears on your current registration. If the name is what’s changing, you’ll enter both the old and new.
  • The effective date of the change. The form wants the date the change actually took effect, not the day you’re filling out the paperwork.

Filling Out the Form

Header and Account Information

On ACD-31015, check “Registration Update” near the top of the form so the TRD routes it correctly. Enter your BTIN, FEIN (or SSN/ITIN), legal business name, and trade name if you use one. Field 6 asks for a short written description of the changes you’re requesting.3New Mexico Taxation and Revenue Department. Business Tax Registration Application and Update Form Be specific. “Changing mailing address” or “adding wage withholding tax” is more useful to processing staff than “updating account.” On the older ACD-31075, this section uses checkbox-style fields to flag the type of change, and you fill in only the sections that apply.2New Mexico Film Office. Business Tax Registration Update

Address and Contact Changes

Both forms have separate fields for the physical business location (no P.O. Box allowed) and the mailing address. Fill in only the address that is changing; leave the other blank. Include a current phone number and the name of someone authorized to discuss the account with TRD agents. If staff need to ask a question about your update, an outdated contact number can turn a routine change into weeks of back-and-forth.

Adding or Removing Tax Types

ACD-31015 lists every tax program you can register for or deactivate. Check all that apply:3New Mexico Taxation and Revenue Department. Business Tax Registration Application and Update Form

  • Gross Receipts Tax
  • Compensating Tax
  • Wage Withholding Tax
  • Non-Wage Withholding Tax
  • Corporate Income and Franchise Tax
  • Cannabis Excise Tax
  • Governmental Gross Receipts Tax
  • Interstate Telecommunication Gross Receipts Tax
  • Leased Vehicle Gross Receipts Tax and Surcharge
  • Weight Distance Tax
  • Workers’ Compensation Fee

The most common addition is wage withholding. Any New Mexico employer who withholds federal income tax from an employee’s paycheck must also withhold state income tax, which means registering for wage withholding through this form or through TAP.4Taxation and Revenue New Mexico. Withholding Tax and Workers Compensation Enter the effective date, typically the employee’s first pay date, so the TRD knows when your filing obligations begin.

Changing Business Status to Active or Closed

Field 12b on ACD-31015 lets you switch the registration status to Active or Closed, with an effective date.3New Mexico Taxation and Revenue Department. Business Tax Registration Application and Update Form If you’re closing the business entirely, enter the last date you conducted business activity in New Mexico. This step matters. Skip it, and the TRD will keep expecting returns and can issue estimated assessments for periods when you had no revenue.

When closing, you may also want a Letter of Good Standing or Certificate of No Tax Due. That requires a separate form, ACD-31096 (the Tax Clearance Request), not the registration update itself.5Taxation and Revenue New Mexico. Register / Close a Corporation Filing both at the same time saves you a second round of paperwork, especially if you’re selling the business and the buyer needs proof there’s no outstanding tax liability.

If Your Business Structure Is Changing

Converting from a sole proprietorship to an LLC, or from a partnership to a corporation, is not really an “update” in the TRD’s eyes. ACD-31075 notes that when ownership changes, a new New Mexico TRD identification number must be obtained.2New Mexico Film Office. Business Tax Registration Update You’re not editing your existing account; you’re closing the old registration and opening a fresh one under the new entity.

That same structural change almost always requires a new federal EIN from the IRS. The IRS lists the triggers by entity type:6Internal Revenue Service. When to Get a New EIN

  • Sole proprietors need a new EIN when they incorporate, form a partnership, or declare bankruptcy.
  • Corporations need a new EIN when they receive a new charter, change to a partnership or sole proprietorship, or create a new corporation through a merger.
  • Partnerships need a new EIN when they incorporate, dissolve and start a new partnership, or a single partner takes over as a sole proprietor.
  • LLCs need a new EIN when they terminate and form a new corporation or partnership, or when a single-member LLC begins filing excise or employment taxes.

You do not need a new EIN just for changing your business name, relocating, or renewing a license.6Internal Revenue Service. When to Get a New EIN Apply for the new EIN before submitting your New Mexico update, because the form asks for the federal number.

How to Submit the Update

Online Through TAP

The fastest route is the Taxpayer Access Point at tap.state.nm.us. Once you’re logged in, TAP lets you make account updates — including address changes, name changes, and officer information — electronically.7Taxation and Revenue New Mexico. Online Services If you don’t already have a TAP account, you can create one using your BTIN. Online submissions post to your account faster than mailed paper, and you get a confirmation screen you can save as a PDF.

By Mail or In Person

Print and complete the paper form, then mail it to the TRD’s business tax processing address in Santa Fe. You can also hand-deliver a completed ACD-31015 to any TRD district office in the state.1Taxation and Revenue New Mexico. Who Must Register a Business If you mail it, send it USPS Certified Mail so you have a dated receipt and delivery confirmation.8USPS. Mail Your Tax Return with USPS Keep a photocopy of the completed form with that receipt.

No Filing Fee

The TRD does not charge a fee to process a registration update or to issue a Business Tax Identification Number.1Taxation and Revenue New Mexico. Who Must Register a Business

Common Mistakes That Delay Processing

Most stalled updates come down to a few avoidable errors. Leaving out the BTIN is the most frequent; without it, the TRD can’t match your update to an existing account. Using a P.O. Box in the physical-address field is another — the form requires a street address for the business location. Entering today’s date as the effective date when the change actually happened weeks or months earlier creates reporting gaps that trigger follow-up inquiries. And forgetting to close out specific tax types when you stop a taxable activity, such as dropping wage withholding after your last employee leaves, means the department will keep expecting returns you have no obligation to file, eventually generating delinquency notices.

If you’re closing the business and plan to sell it, file the registration update and the ACD-31096 tax clearance request together. Buyers routinely ask for proof of no outstanding tax liability before completing a purchase, and waiting until the sale is imminent adds weeks to the transaction.