In a report tabled in the parliament on Tuesday, the Comptroller and Auditor General (CAG) said it found lapses in 22% cases where loans were writtenoff.
As home prices have stabilised, unemployment has gradually declined and troubled loans have been restructured or writtenoff, the two have set aside ever smaller provisions for loan losses.
But bankers say the rule of thumb is that only about 15% of restructured loans eventually become bad debts (and even they need not be entirely writtenoff).