Write-Off in AP

An AP write-off occurs when the business extinguishes an outstanding accounts payable balance that is no longer expected to be paid. This happens most commonly with: small rounding differences between invoices and payments, unapplied credits that are too old to be applied against current invoices, liabilities to suppliers who have ceased trading and from whom no further demand for payment is expected, and disputed balances that have been agreed to be forgiven by both parties.

Writing off an AP balance reduces the liability and creates a credit (gain) in the income statement. Economically, this makes sense: the business no longer owes the money, so the liability should no longer appear on the balance sheet. Practically, write-offs should only occur when there is genuine certainty that the obligation will not need to be honoured -- writing off an AP balance because "we haven't been chased for it" is not an adequate basis, since suppliers can and do demand payment of old invoices, particularly under SOPA in construction contexts.

Accounting treatment

The accounting entry for an AP write-off is: debit accounts payable (reducing the liability), credit other income or expense reduction (recognising the gain). The specific account used for the credit depends on the nature and materiality of the write-off: small rounding differences are often credited to a miscellaneous expense account; material liability write-offs may require a specific one-time gain line in the income statement, with disclosure in the financial statements if significant.

For GST purposes, writing off an AP balance does not in itself create a GST adjustment -- the GST has already been processed when the original invoice was entered (the ITC was claimed). If the write-off relates to an invoice for which the business claimed an ITC but never paid (and never will pay), the ATO may take the view that the ITC should be reversed on the BAS for the period of the write-off, since the supply was never actually paid for and the input tax credit relates to an amount that will not be paid. This is a nuanced area and advice specific to the situation should be sought where the amounts are material.

Preventing write-offs from accumulating

The best approach to AP write-offs is regular housekeeping that prevents old balances from accumulating in the first place. Unapplied credits should be reviewed and applied (or refunded) monthly. Balances that are in dispute should be formally documented and either resolved or escalated within a defined timeframe. Small rounding differences should be cleared through a defined write-off process rather than left to accumulate across the year. An annual AP balance review at financial year-end that identifies and clears all non-genuine balances keeps the AP ledger clean and the balance sheet accurate.