The TFN is invalid : LodgeiT

The "TFN" is invalid.

Modified on: Fri, 6 Mar, 2026 at 10:10 AM

Error Prompt: The "TFN" is invalid.

Suggested Solution:

1. Double check if the TFN number digits in LodgeiT vs. ATO portal is the same. You can find your TFN when you login to myGov account linked to the ATO. You can also see your TFN number in the Notice of Assessment and letters sent by ATO.

2. Try to remove the zero "0" digit when you input the TFN number in LodgeiT. See below image of a TFN number with a zero digit as prefix that was entered via client "Settings > General" section:

If the issue still persists, please send us the following:

1.Screenshot of the TFN from the ATO portal.

2.Invite tech team to access your LodgeiT account. Guide: Invite LodgeiT Team (for Concern / Issues)
Other ATO Related link:

https://www.ato.gov.au/businesses-and-organisations/hiring-and-paying-your-workers/payg-withholding/payments-you-need-to-withhold-from/payments-to-employees/tax-file-number-and-withholding-declarations#Withholdingdeclaration

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