Provisional attachment powers protect revenue by allowing property restraint pending tax proceedings, subject to guarantees and time limits.
Clause 500 empowers the Assessing Officer to provisionally attach assessee property during assessment, reassessment or specified penalty proceedings subject to prior written approval of a defined Competent Authority, execution in the prescribed manner, and a default six month duration extendable for recorded reasons within statutory limits; it permits substitution of a bank guarantee equal to fair market value (or a lower amount if objectively sufficient), mandates valuation by a Valuation Officer, sets timelines for revocation upon guarantee receipt, and prescribes invocation, application and release mechanics for guarantees.