What documents do I need to include when filing my state taxes?

When filing your state taxes with the State of Hawaii Department of Taxation, there are a few essential documents you will need to include. First and foremost, you should have a completed copy of your federal tax return, including all schedules and supporting documentation. Additionally, you will need to attach copies of any income statements, such as W-2s or 1099s, received from employers or other sources of income. If applicable, include copies of any income tax withholding statements or other forms related to tax payments made throughout the year. It's also crucial to include any relevant documents supporting deductions or credits you are claiming. Finally, ensure that you sign and date the return before submitting it. Providing all the necessary documents will help ensure a smooth and accurate processing of your state taxes.