New Mexico Business State Tax Extension I Fiduciaries Filing Guide

Modified on Wed, 11 Feb at 12:36 PM


State NameNew Mexico
Business Entity TypeFiduciaries
Extension StatusApproved with Federal
Return Due DateApril 15, 2026
Extended Due DateOctober 15, 2026
Other Information

* New Mexico grants your business an automatic 6-month extension provided you have obtained an approved IRS extension.

* The extension is NOT an extension to pay any taxes you may have due.

* Tax payments are due by the original return due date.

Online PaymentNew Mexico | Online Tax Extension Payment
Payment Voucher FormForm RPD-41096 | Extension of Time to File
State Payment AgencyNew Mexico Taxation and Revenue Department
Mailing Address with Payment

Taxation and Revenue Department
P.O. Box 630
Santa Fe, New Mexico 87504-0630

Failure to File Penalty$100 each month or fraction thereof, plus 5% per month or fraction thereof of the underpayment not to exceed 25%.
Underpayment Penalty5% of the tax due.
Tax Year2025

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