State encourages mailing important documents early to avoid missing deadlines
New USPS postmark procedures could affect time-sensitive forms
Following changes by the United States Postal Service (USPS) on its postmark procedures, New Mexico state agencies are encouraging people to mail important, time-sensitive documents early to avoid potential datemark delays leading to missed deadlines.
New Mexicans are encouraged to file documents electronically, when possible.
On Dec. 24, 2025, USPS began postmarking letters and packages with the date processed at a facility rather than the date dropped off in a mailbox, as was previously done.
Multiple state agencies depend on the USPS postmark date for deadlines, including the
Taxation and Revenue and Workforce Solutions departments. Missed deadlines can lead to penalties and interest accrual.
Time-sensitive forms and matters with deadlines dependent on postmark dates include:
- Tax return filings
- Motor Vehicle Division Implied Consent hearing requests
- Delinquent property tax installment agreements
- Tax protests
- Unemployment insurance correspondence for claimants and employers for benefits, taxes, and appeal hearings
- Claims documentation related to child labor, human rights, paid sick leave, public works, and wage and hour
People can also take mail directly to a post office and request a manual postmark to ensure the postmark aligns with the date received by USPS.
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The Taxation and Revenue Department serves the State of New Mexico by providing fair and efficient tax and motor vehicle services. It administers more than 38 tax programs and distributes revenue to the State and to local and tribal governments throughout New Mexico.
The Department strives to reduce taxpayer burden through clearer communication, statutes, regulations, forms, correspondence and instructions.
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The New Mexico Department of Workforce Solutions (NMDWS) oversees the New Mexico public workforce system. The department is committed to supporting the business community through special recruitment, analyzing hard to fill jobs, layoffs, job fairs, and skills assessments for hiring; and assisting New Mexicans seeking employment opportunities with job search, job referrals and placement, and customized skill development such as interviewing skills and resume writing. The department administers programs to include business services; workforce training; Unemployment Insurance; labor law enforcement; veterans’ services; and labor market information. In 2025, NMDWS expanded to include the Office of Housing.