W-4 Information & New Mexico State Tax Withholding

2024 Federal Form W-4
Do you have questions about the new 2024 Federal Form W-4 for your withholdings?  Please visit the IRS website.

Updating Federal Form W-4 online via LoboWeb
You can update your Federal W-4 Form online 24/7.  Paper forms do NOT need to be turned in to Payroll.


Instructions to change Federal Form W-4 online:
my.unm.edu > Login > Employee Life > LoboWeb > Tax Forms > Form W-4 Employee’s Withholding Certificate

Review your existing W-4 information such as Filing Status, Dependent Amount, Other Income, Deductions, and Additional Withholding.  If additional information is needed, select the Federal W-4 Form link for instructions.

If an update is necessary: Select Update at the bottom of the page.  Complete the required Fields. Select Certify Changes. Click Ok to verify the accuracy of your changes.  Select the W-4 Tax Exemptions and Allowances link to return to your Form W-4 Employee’s Withholding Certificate.  Review to verify accuracy and note the Start Date, as this is the date that the changes will become effective.


Filing status change: The following links may be helpful to determine if you need to submit a new Federal Form W-4 online via LoboWeb or at the Payroll Office.

You May Need to Check Your Tax Withholding

IRS Withholding Estimator: IRS Withholding Estimator


New Mexico State Tax Updates:  Any changes to Exempt status, Filing Status or Deductions amount (4b) on your Federal Form W-4 are also applied to your State of New Mexico withholding.  Should you require an additional amount of withholding, a different Deductions amount (4b), or wish to claim Exempt for the State of New Mexico Income Tax, print the form at University of New Mexico Payroll Department State Withholding form and deliver it to the Payroll Office directly, as Payroll personnel must update it.


New Employees:  Your W-4 is defaulted to Single.  You may update your W-4 after your start date.