State of New Mexico
Personal Income Tax Extensions
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New Mexico Filing Due Date: NM personal income tax returns are due by April 15, in most years — or by the 15th day of the 4th month following the close of the taxable year (for fiscal year filers).
Extended Deadline with New Mexico Tax Extension: New Mexico offers a 60-day extension for taxpayers that don’t have a Federal tax extension.
If you have a valid 6-month Federal extension (IRS Form 4868), you will automatically receive a New Mexico extension for the same amount of time. In that case, the NM filing deadline will be moved from April 15 to October 15 (for calendar year filers).
New Mexico Tax Extension Form: To request a NM-only tax extension, file Form RPD-41096 by the original due date of your return.
New Mexico Extension Payment Requirement: An extension of time to file is not an extension of time to pay your New Mexico income tax. All state tax payments are due by the original deadline of the return. Any tax that hasn’t been paid by the proper due date will be subject to interest and penalties. You can pay the tax balance due for your New Mexico extension with Form PIT-EXT, or pay electronically through NM Online Services: www.tax.newmexico.gov/Online-Services