Guidelines have been tightened to require more tax assessors to make declarations of interest.
The Inland Revenue Department has broadened the number of officials under the declaration system from 37 to 75 in the wake of the tax chief scandal.
The extra 38 staff include chief assessors, senior assessors and Deputy Collector of Stamp Revenue.
A government source said the staff had been added to the list after the department set up a committee in February last year to review the declaration system.
Declarations from the new staff are to be returned by the end of this month.
The measures were announced by Secretary for Treasury Denise Yue Chung-yee, the immediate supervisor of Wong Ho-sang, who was sacked yesterday. An investigation found Mr Wong had personally handled files submitted by his wife's company and had failed to declare a conflict of interest.
Acting Commissioner of Inland Revenue Sin Law Yuk-lin and her top aides are to interview the 75 officers to clarify the declarations.
