The total amount of accounts receivable actually written off will seldom, if ever, be exactly equal to the estimated amount previously credited to the Allowance for Doubtful accounts.

但坏账的实际核销总额很少会与之前预估并贷记坏账准备的金额完全一致。

youdao

The amount of debt that has been written off is also increasing.

BBC: NI rates arrears reach record levels