How to Find My New Mexico Taxpayer ID (NMBTIN)

New Mexico identifies businesses for state tax purposes using a New Mexico Business Tax Identification Number (NMBTIN), formerly known as a CRS (Combined Reporting System) ID. This guide explains what an NMBTIN is, how to obtain one, and where to find it.

What Is My New Mexico Taxpayer ID?

Your New Mexico Business Tax Identification Number (BTIN or NMBTIN) is the account number assigned by the New Mexico Taxation and Revenue Department (TRD) when your business registers for state tax accounts. TRD uses this number to track your filings, payments, and tax obligations.

You'll use your Taxpayer Access Point (TAP) account to manage your NMBTIN and other New Mexico tax obligations. If your business registered before New Mexico transitioned to BTINs, you may know this number as your CRS ID. TRD carried existing numbers forward, so it's the same account under a newer name.

Where to Find It

If you've already registered with TRD, you can find your New Mexico Taxpayer ID in any of the following places:

• Your New Mexico Business Tax Registration Certificate. When you register with TRD, the department issues a registration certificate for display at your business location. Your Taxpayer ID appears on this certificate.

• Your TAP account. Log in to your Taxpayer Access Point account at NM Taxation Revenue & Taxpayer Access Point and review your account summary to confirm the number on file.

• New Mexico Taxation and Revenue Department correspondence. Any notices, letters, or account-related communications from TRD will reference your Taxpayer ID.

⚠️ Important: If you're not sure whether your business is using its BTIN or an older CRS ID, they refer to the same account. You can provide whichever number appears on your most recent certificate or TRD correspondence.

What I Need to Obtain an NMBTIN

If your business hasn't registered with TRD yet, you'll need the following on hand before applying for a New Mexico Taxpayer ID (NMBTIN):

• Federal Tax ID number (EIN). Your business's federal Employer Identification Number, issued by the IRS.

• Business registration number from the New Mexico Secretary of State. The number assigned when you registered your legal business structure with the Secretary of State.

• Contractor number (if applicable). Construction contractors registering with the New Mexico Regulation and Licensing Department will also need their contractor license number.

Once you have these items ready, you can register online through TAP to obtain your NMBTIN.

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