Get your taxes done using TurboTax

1) No, nothing in Part III of Form 8829 can be edited manually. Changes to this section can be made either on the Asset Worksheet for the Home Office or using the step-by-step interview. See below.

2) The path in TurboTax Home & Business is Business >> Business Income & Expenses >> Edit your business >> Home Office Expenses.

As you go through the home office expenses section for your business, look for the question near the end of the section that says, "Did you have any home office expenses not deducted in a prior year?"  Answering yes to this question will open the page for entering prior year expenses that can carry over.

3) Correct your basis for 2023 to report the correct amount of depreciation this year. If you know what the total prior depreciation should be, you can correct that as well under the Asset profile for the home office. 

File the amended return after you file the current year.

The path is Home Office Expense >> Edit home office >> Continue to the page Home Office Asset Summary >> Edit asset continue to page "Review Information."

      See screenshot below (click to enlarge).