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When your IL-1040, Individual Income Tax Return, for last year was processed, either your filing status was entered incorrectly or your spouse's Social Security number was not entered.
If you complete a paper IL-1040, marking the appropriate filing status and writing your spouse's Social Security number in the spaces provided, you should both receive an IL-PIN next year. If you received an IL-1040 booklet in the mail, do not use the label with your pre-printed name and address on it. If you use the pre-printed label our records will not be corrected.