Nobody starts a business because they love bookkeeping. So it's always the last thing that gets done, usually the night before the BAS is due or when the accountant asks for everything in a panic.
The problem isn't the inconvenience. It's what happens when you're flying blind financially.
When your books are months behind, you don't actually know if your business is profitable. You know what's in your bank account, which tells you almost nothing useful. A healthy bank balance can coexist with a loss-making business. An empty one can sit alongside a profitable one. Cash flow and profit are not the same thing.
Behind books also means missed deductions. Expenses get forgotten. Receipts disappear. By the time your accountant sees everything, some of it can't be claimed because there's no record.
And then there's the time cost. Catching up six months of bookkeeping in one sitting takes hours, hours that could have been avoided by spending twenty minutes a week staying current.
The bar is genuinely low. Reconcile your bank account once a week. Photograph receipts when you get them. Use accounting software that connects to your bank. That's most of it.
If you're consistently behind and can't seem to catch up, that's usually a sign you need someone else to handle it. The cost of a bookkeeper is almost always less than the cost of the chaos.