Worksheets 3 and 4 (Form 8582-CR) Worksheets 3 and 4 (Form 8582-CR) Summary: Worksheet 3 (used to determine the credit amounts to enter on Form 8582-CR, lines 3a and 3b, pertaining to low-income housing credits and Worksheet 4 (used to determine the credit amounts to enter on Form 8582-CR, lines 4a and 4b, pertaining to credits from all other passive activities) are printed here for the taxpayer's use.