How do I amend my 2024 state tax return to fix an underpaid Colorado TABOR state sales tax refund?

Some Colorado TurboTax customers have underpaid their state taxes due to an error with the TABOR sales tax refund. 

If we notified you, we recommend you submit an amended state tax return as soon as possible to avoid additional penalties and interest on the unpaid balance.

To correct your return, please follow the steps below:

• Use TurboTax to amend your state tax return.
  • Enter “TO CORRECT THE AMOUNT OF TABOR STATE SALES TAX REFUND” as the reason for amending.
• Follow the instructions provided by TurboTax to efile the amended state tax return. 
• Save a copy of your amended state tax return for your records.

If you have questions, call 844-333-2161 (Monday–Friday, 6 AM to 6 PM MT) to speak with a specialist. Mention 2024 CO MAGI TABOR so they know what you’re calling about.