What documents do I need to prepare my state tax return in South Dakota?

When preparing your state tax return in South Dakota, there are certain documents you will need to gather. Firstly, you will need a copy of your federal tax return, including all schedules and attachments. Additionally, make sure to have any relevant W-2 forms from all employers you worked for during the tax year. If you have earned income from other states, you will require copies of those state tax returns as well. Any 1099 forms showing income from dividends, interest, or retirement accounts are necessary to include. If applicable, gather documents related to deductions or credits you may claim, such as mortgage interest statements, property tax bills, and medical expense receipts. Having your Social Security number and the Social Security numbers of any dependents is also essential. Finally, ensure you have any other relevant documentation, such as proof of education expenses or charitable contributions. Remember to consult the South Dakota Department of Revenue website for further details specific to your situation.