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- Click ‘Get Form’ to open the CT-399 in the editor.
- Begin with Part 1, where you will compute New York State depreciation modifications. Fill in your corporation's legal name and employer identification number at the top.
- In Section A, list each item of depreciable property. For each item, provide details such as description, date placed in service, cost basis, and applicable depreciation methods. Ensure all columns from B to I are completed accurately.
- Proceed to Section B for property qualified under IRC section 168(k)(2). Repeat the process of listing items and filling out the required fields as instructed.
- If applicable, complete Part 2 for disposition adjustments by determining differences between federal and New York State depreciation deductions for each property listed.
- Finally, summarize your adjustments in Part 3 by entering amounts from previous sections into the designated lines.
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| 2025 | 4.6 Satisfied (42 Votes) | |
| 2024 | 4.8 Satisfied (60 Votes) | |
| 2023 | 4.4 Satisfied (55 Votes) | |
| 2022 | 4.8 Satisfied (53 Votes) | |
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| 2013 | 4.4 Satisfied (71 Votes) | |
| 2012 | 4 Satisfied (29 Votes) |
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