Good faith means honest conduct without malice or deceit, creating a rebuttable presumption of legitimacy. The term good faith under Section 3(22) of the General Clauses Act, 1897 denotes honest conduct done whether or not negligent, presumed when acts are performed with due care and attention and absent mala fides, ill will or intent to deceive; its existence is a question of fact that must be established or rebutted by evidence, with judicial authorities emphasising honest intention and absence of fraud, collusion or deceit.