What should I do if I made an error on my state tax return?

If you made an error on your state tax return, you should file an amended return as soon as possible to correct the mistake. You can do this by submitting Form 40X for individuals or Form 20C-C for businesses. Make sure to include any necessary documentation with your amended return. It's important to rectify any errors promptly to avoid penalties or interest charges. If you have questions or need assistance with amending your return, you can reach out to the Alabama Department of Revenue for guidance.