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File 2017 IL-1040 Using Tax-Prep Software

You may choose to file online using computer tax preparation (Tax-Prep) software. This allows you to file your IL-1040 electronically using department approved commercial software or web-based applications. In some instances, the commercial software can be downloaded from the software company's web site. Some providers of Tax-Prep software may charge a fee for their service.

To file using this method you and your spouse (if applicable) will need:



You may file using Tax-Prep software if you (and your spouse, if filing jointly) have an IL-PIN or a valid Illinois driver's license or Illinois identification card on file with the Illinois Secretary of State.

You may not file electronically using Tax-Prep software if you:

If you find that you have made an error after filing, you will need to file an IL-1040-X, Amended Individual Income Tax Return.