New Mexico Notice of Tax Assessment Checklist
A New Mexico Notice of Assessment from the New Mexico Taxation and Revenue Department is an official document informing you that the state has calculated a tax amount you may owe based on their records. Responding to it affects what happens next in the collection process, and ignoring this notice can result in additional penalties, interest accrual, liens, levies (including wage garnishment or bank levies), and other enforcement actions.
What This Notice Means
The Notice of Assessment tells you that the New Mexico Taxation and Revenue Department has reviewed your tax account and determined that you owe a specific amount of tax based on their records or audit findings. It is not a bill for taxes you have already paid; rather, it represents the state’s official calculation of what they believe you owe.
Under New Mexico law, any assessment of taxes or demand for payment made by the Department is presumed to be correct. Such a legal presumption places the burden on you to present evidence tending to dispute the factual correctness of the assessment if you disagree with it.
Why the State Sent This Notice
The Department typically sends this notice after one of several administrative situations. You may have filed a return but did not pay the full amount due, or you did not file a return, and the state believes you had a filing obligation.
State auditors may have conducted an audit and found additional tax owed related to income tax, gross receipts tax, withholding tax, or other state tax programs. Alternatively, the Department may have matched income information from third parties (like employers or financial institutions) that suggests unreported income, and according to state administrative processes, the Notice of Assessment of Taxes is generated before any wage garnishment, bank levy, or property lien is placed.
What Happens If You Ignore This Notice
You have exactly 90 days from the mailing date of the Notice of Assessment to file a written protest. Missing this New Mexico tax protest deadline results in the undisputed amount of tax assessed becoming final, and you are deemed to have waived the right to protest the assessment unless you pay the tax and file a claim for refund.
What This Notice Does Not Mean
This notice does not mean the state has already seized your property, garnished your wages, or filed a lien. Those are separate collection action steps that may come later if the assessment is not addressed.
Checklist: What to Do After Receiving This Notice
Step 1: Locate and read the entire notice
Find the physical or digital copy of your Notice of Assessment and read it completely from start to finish. Note the tax year involved, the type of tax (income, gross receipts tax, withholding, or other), the amount assessed, any penalties listed, and the date the notice was issued.
Step 2: Identify all key dates on the notice
Write down the date you received the notice, the date the notice was issued, the deadline to respond if one is listed, and the date any payment is due. The New Mexico tax protest deadline is 90 days from the mailing date of the notice.
Step 3: Verify your tax account details
● Check the notice to confirm it has your correct name, address, Social Security number or Tax ID number, and the tax year in question.
● Confirm that the notice is addressed to you and not to another household member or a business you no longer own.
● Note any incorrect information as a correction you will need to request.
Step 4: Review the assessment calculation
Look at how the state calculated the amount owed. The notice must state the nature and amount of taxes owed, demand immediate payment, and inform you of available remedies. Compare the notice to your return and gather evidence that disputes the assessment’s accuracy if you disagree.
Remember that the assessment is presumed correct under Section 7-1-17 NMSA 1978, and you bear the burden of presenting evidence tending to dispute its factual correctness.
Step 5: Gather your tax records for that year
Collect your tax return if you filed one, W-2 forms, 1099 forms, receipts, business records, or any other documents related to income or deductions for the year in question. Having these records in hand, including documentation of tangible property used in business operations, if applicable, will help you prepare any response before contacting the state.
Step 6: Contact the New Mexico Taxation and Revenue Department
Call or write to the Department using the contact information on the notice. Ask them to explain the basis for the assessment, verify the accuracy of your account information, and clarify the deadline for response.
Step 7: Ask about response options
During your contact with the Department, ask what options are available to you. Short-term payment plans allow up to 12 months without a lien, while installment agreements allow up to 72 months and require a lien or acceptable security.
A self-service option is available through the Taxpayer Access Point portal. Ask about the specific process for each option and the deadline for requesting it.
Step 8: Understand your protest rights
If you disagree with the assessment, you must file a formal protest under Section 7-1-24 NMSA 1978. The protest must be in writing, identify the tax involved, state the grounds for the protest, summarize evidence supporting each ground asserted, and state the affirmative relief requested.
After filing a protest within 90 days of assessment, either party may request a hearing with the Administrative Hearings Office no earlier than 60 days after the protest is filed. The hearing officer will review the evidence presented during the assessment hearing and issue a Decision & Orders that explain the ruling on your protest. A New Mexico tax assessment appeal refers to judicial review of a hearing officer's decision by the Court of Appeals.
Step 9: Take your chosen action before the deadline
If you decide to challenge the assessment, file the protest before the 90-day deadline. Missing the deadline has specific statutory consequences: the undisputed amount of tax assessed becomes final, you are deemed to have waived the right to protest unless you pay the tax and submit a claim for refund, and the secretary may proceed to initiate collection action.
Alternatively, you may choose to pay the disputed tax amount and then file a refund claim under Section 7-1-26 NMSA 1978 if you believe the assessment was incorrect. Both the protest process and the refund claim process are available remedies under New Mexico tax law.
Step 10: Keep copies of everything
● Make copies of the original notice, any letters or documents you send to the Department, any written responses you receive, including Decision & Orders if you proceed to a hearing, and records of any phone calls, including dates and names of people you spoke with.
● Store these copies in a safe place for future reference.
Step 11: Monitor for follow-up notices
After you take action, watch for follow-up correspondence from the Department. Contact the Department to confirm your request was received if you do not receive the expected follow-up within a reasonable time.
Common Mistakes to Avoid
Submitting a response after the 90-day deadline results in the assessment becoming final and the waiver of your right to protest unless you pay the tax and file a claim for refund. Ignoring the notice escalates collection efforts, as the debt does not disappear if ignored.
Sending incomplete information or responses may not satisfy the Department’s requirements and will delay resolution, whether you pursue an assessment hearing or submit a refund claim. Not keeping records of your communications limits your ability to prove what was agreed upon or discussed.
A New Mexico Notice of Assessment is a formal step in the tax collection process, but it is not the end of the process. Taking time to understand what the notice says, gathering your records, and contacting the Department to discuss your options puts you in a stronger position than ignoring the notice.
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This checklist is for educational purposes only and does not constitute tax or legal advice. Always review official IRS instructions and consult a qualified professional for guidance
