【摘要】There are some problems about the treatment of Non-performing loans(NPLs) in the current 1993 SNA. Four kinds of measurements are provided on loan valuation and four options are consequently given a by special working group on NPLs of the IMF. Through discussion,it is determined that loans are remained to be measured at nominal value in the main accounts.Meanwhile,the fair value of loans is recorded on the asset side of balance sheets.In regards to the impact on FISIM,option 1 is preferable, i.e. continue to estimate FISIM on NPLs and allocate it to the corresponding borrowers.The unpaid FISIM is recorded in the accounts in such a way as to increment principal outstanding.