A Self-Select PIN is an identification that allows you to electronically file your return without the hassle of signing and mailing a signature form.

The federal Self-Select PIN is a 5-digit number that you personally select.

Illinois issues a PIN and requires that all on-line filers use paperless filing. Maine also issues PINs for electronic / paperless filing, the use of the PIN is optional. The other states either use the Federal PIN, do not require a PIN for paperless filing or do not offer the paperless filing option.