Two Factor Authentication – FAQ

  • What is Two-Factor Authentication?
    • Two-factor authentication is a functionality that provides identification of users by means of the combination of two different components: something the user knows and something the user possesses. In this case, the user knows his user name and password and possesses access to his phone or email account.  
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  • What information is required?
    • Phone number that accepts Short Message Service (SMS) messaging or,

    • Email address

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  • How am I protected?
    • Another user must acquire your: username and password. 

    • The use of two-factor authentication to prove one's identity is based on the premise that an unauthorized person is unlikely to be able to supply both factors required for access. When an authentication attempt is tied, both factors must be correct or the asset being protected remains blocked.

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  • Can existing taxpayers with web logons choose to opt-in two-factor authentication?
    • Yes, by updating their Profile and providing their preferred two-factor authentication contact method.
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  • Will two-factor authentication ever be required on GTC?
    • Yes, as follows:
    1. July 1 - Corporations and Subchapter S Corp
    2. August 1 - LLC, Partnership, Estate and Fiduciary
    3. September 1- Sole Proprietor and Individual
    • If you update your Profile, prior to the date above, based on your business type.
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  • Will I be required to enter a code each time I login?
    • If you are using the same device each time and have selected “Trust this Computer” upon logging in to GTC, this is not required
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  • Can I opt-out (disable) two-factor?
    • No, the Department has implemented two-factor to stay current with standard security measures.
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  • What if my Email address or phone number/carrier changes?
    • If you have already logged in on this browser and computer and selected “Trust this Computer”, then there will be no issues.
    • You may change your email address or phone number inside of GTC under your Profile.
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  • Do you accept international phone numbers?
    • Not at this time; you will need to choose the email method of contact.
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  • What happens if I use a second device, will I be required to re-authenticate if I go back to the first device?
    • You need to authenticate on every device/browser that you log in with unless you have previously selected “Trust this Computer” or you have cleared your cookies.
    • There is no issue with trusting multiple devices.
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  • What if I do not receive the email with the codes?
    • Check your spam folder
    • Verify you are checking the correct email address or phone number
    • Make sure that [email protected] is not added to your block list
    • Add [email protected] to your contacts list
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  • Is there a time limit on the authentication code received?
    • Your authentication code will last for 1 day unless you request another authentication code which will replace any previous codes.
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  • Am I required to re-authenticate on each login?
    • You need to authenticate on every device/browser that you log in with unless you have previously selected “Trust this Computer” or you have cleared your cookies.
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  • Who can I call for assistance?
    • Taxpayer Services Division @ 877-423-6711
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  • Here’s how to opt-in once you’re logged on to GTC

    How to Opt-In:

    Once logged into GTC, taxpayers who wish to opt-in will need to:

    TFA Opt-In.JPG

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