Input Tax Credit conditions for goods sent to job workers require challans, ITC-04 reporting, and deemed supply rules. Rule 45 requires that inputs, semi finished goods and capital goods sent to a job worker be accompanied by a principal issued challan (endosable by job workers), with challan particulars as per rule 55; challan details must be reported in FORM GST ITC 04 for the prescribed period. If such goods are not returned within the period in section 143, they are deemed supplied by the principal, to be declared in FORM GSTR 1 with tax and interest payable. The rule clarifies that capital goods include plant and machinery and sets valuation rules for exempt supplies.