You hired a bookkeeper. They were friendly, the price was reasonable, and the books got done each month. For a while everything was fine.
Then BAS came in late one quarter. Reconciliation slipped a month behind. You started checking receipts yourself just to keep things moving. The Xero file looked correct on the surface, but at year-end the accountant flagged miscoded GST, double-claimed expenses, and a quarter where super was missed entirely.
It happens often. Bookkeeping is high-volume work, and high-volume work drifts when nobody is reviewing it systematically. Trinity treats bookkeeping the same way we treat tax: senior eyes on the file, weekly checks rather than monthly catch-up, and reconciliation before the BAS gets prepared.