Payroll Services

How to Change Your Tax Status

Tax Image

UC Davis employees are encouraged to update their own tax status through a secure website called At Your Service (AYSO). This is the fastest way to make changes, and employees receive confirmation by email that changes have been made.

Verify Your Current Status

If you have not accessed your account at AYSO previously, or have forgotten your user name or password:

  1. Contact the PPS Help Desk at ppshelp@ucdavis.edu for a temporary password (DO NOT include your SSN in email correspondence)
  2. Access AYSO, follow instructions provided by PPS Help Desk to login
  3. Enter the requested information to establish a new password
  4. If you have previously set up a user name it will be provided as a reminder for future use
  5. You may be prompted to agree to the electronic authorization and to choose six questions that will be used to verify your identity for future password resets
  6. Under the Income & Taxes heading, choose the Tax Witholdings link
  7. Your current witholding status will be provided for both federal and state tax filing

If you already have a user name and password:

  1. Access AYSO
  2. Enter the user name and password for your account at AYSO
  3. Under the Income & Taxes heading, choose the Tax Witholdings link
  4. Your current witholding status will be provided for both federal and state tax filing

Calculate Allowances

Forms are provided to assist you in calculating your allowances for both federal and state filing. Using the menu select the Calculate Allowances link to navigate to the forms.

Estimate Tax Withheld

Using the menu select the Estimate Tax Withheld link to navigate to the options for both federal and state deductions. If you are a current employee the site should pull your payroll data and populate the fields, adjust the marital status and allowances and press the Submit button to see what your new deduction would be based on your changes.

Note: This will not made changes to your status, the system is only estimating deductions.

Change Witholdings

Using the menu select the Change Witholdings link to navigate to the options for both federal and state filing. You will need to submit and verify the changes to fully update your filing status. A confirmation email will be sent to the email address stored for you in AYSO.

Filing Exempt Status

Using the menu select the Fed/CA Exemption link to navigate to the options for both federal and state exemption filing. Carefully read the information and make sure to submit and verify changes to fully update your filing status as Exempt from tax witholding.

Filing Status Using a W4 Paper Form

If you don't have access to the internet, don't want to update yourself, or have any other reason to use the paper W4 form to update your tax status, you can access the form here. Submit the completed form to your department payroll representative, or service center for processing.

Assistance with any of this information can be found through the PPS Help Desk by calling (530) 752-7750 or email ppshelp@ucdavis.edu. Do not provide any SSN information at part of email contact.

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