29/05/2026
One small bookkeeping mistake cost this business an extra $18,000. ๐ ๏ธ
Josh recently reviewed a clientโs BAS after they felt something wasnโt adding up โ and the issue was picked up almost immediately.
The problem?
Sales were being recorded twice in Xero.
Hereโs what happened:
The payment coming through the bank feed was manually coded as a saleโฆ AND a separate payment was also recorded against the invoice.
That duplicated the income in Xero, which meant the business was reporting more sales than they actually made โ and potentially paying more tax to the ATO because of it.
Whatโs even more concerning?
The BAS had already been prepared and missed before it was reviewed again.
The takeaway:
โ Always match bank feed payments to invoices in Xero
โ Donโt manually hard-code sales if the invoice already exists
โ Reconcile your accounts monthly or quarterly to catch errors early
Because small bookkeeping mistakes can turn into expensive tax problems fast.