Informant reward factors guide eligibility and quantum based on information quality, assistance rendered, and incurred risk. Factors for granting an informant reward and fixing its quantum require fulfillment of scheme conditions; assessment of the specific nature, precision, accuracy and usefulness of information and the quality of evidence; evaluation of the extent and nature of assistance rendered; and consideration of the risk, trouble and expenses incurred by the informant, all to be weighed by the competent authority.