If you have NOT filed the 2023 tax return -
See this TurboTax support FAQ for the injured spouse Form 8379 - https://ttlc.intuit.com/turbotax-support/en-us/help-article/spouse-partner/file-form-8379-injured-sp...
If you have filed the 2023 tax return you can complete the Form 8379 manually and mail the form to the IRS.
IRS Form 8379 - https://www.irs.gov/forms-pubs/about-form-8379
IRS address for mailing, by state, and use the address for a Form 1040 without payment - https://www.irs.gov/filing/where-to-file-paper-tax-returns-with-or-without-a-payment
