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

When filing state taxes in Alabama, you will need to include several documents to ensure a smooth and accurate process. The essential documents include your completed Alabama Individual Income Tax Return (Form 40), W-2 forms from all employers, any 1099 forms received, and a copy of your federal tax return (Form 1040). Moreover, if you are claiming any deductions or credits, like itemized deductions or educational credits, be sure to attach the necessary supporting documents. Additionally, include Form W-2C if you have made corrections to your W-2 forms. Remember to sign and date your return before mailing it to the Alabama Department of Revenue. Failure to include these documents may lead to processing delays or errors in your tax assessment.