Account 590 " Provisions for impairment of marketable securities " is credited with the amount of impairment losses by debiting a subdivision of account 6866 entitled " Impairment losses of marketable securities ".

This account is debited by crediting a subdivision of account 7866 " Reversal of impairment losses of financial assets " when the provision for impairment is no longer required, in whole or in part.

When marketable securities are sold, the provision previously set aside is normally balanced by crediting account 7866.