The IRS has a special POA form for tax matters, form 2848. That would include all income from both of you.I would also suggest you fill out the Schedule A for itemized deductions, the medical section. Legal documents for people with Alzheimer's and other dementias – learn about guardianship, power of attorney, living wills, living trusts and more. This free program will help you fill out the papers that you will need to file in Family Court. A complete list of forms can be found at the bottom of this page. Please read the instructions below to ensure that you select the correct form. Information about Form 8379, Injured Spouse Allocation, including recent updates, related forms, and instructions on how to file. Mark Preston was in his forties when he was diagnosed with a rare form of dementia. The following forms can be printed and submitted to your county DRS.