Doing your own books feels free because no invoice arrives. It is usually the most expensive labour in the business, and the arithmetic is not close once you put a number on your own hour.
Start by pricing your own time
Most owners have never done this, which is why the decision gets made on feel.
Take what the business earns from an hour of your attention when you point it at the work only you can do: quoting, selling, running the job, keeping a good client. For a trades business that is the charge-out rate on a billable hour. For a services business it is what an hour of your delivery is worth. For a retailer it is harder, so use what you would have to pay someone competent to replace you on the floor, then add the margin your presence generates.
Whatever that number is, it is almost never $40 to $90 an hour, which is what Australian bookkeeping costs to buy in 2026. If your hour is worth more than that, every hour you spend coding a bank feed is sold at a loss.
The arithmetic, using real numbers
A modest DIY load for a business with a few staff is six to ten hours a month, once you count the bank feed, chasing receipts, payroll, and the longer stretch at quarter end.
| Your hour is worth | 8 hours a month costs you | Over a year |
|---|---|---|
| $80 | $640 | $7,680 |
| $120 | $960 | $11,520 |
| $180 | $1,440 | $17,280 |
Against that, a fixed monthly bookkeeping fee for a small business sits between $300 and $1,200 depending on volume, payroll and complexity. Even at the top of that band, the owner whose hour is worth $120 is ahead, and that is before anything below this line is counted.
The three costs nobody puts in the comparison
The hours are not the ones you think
Coding transactions is the visible part and the smallest. The hidden hours are working out what an unlabelled transfer was four weeks later, hunting a receipt you know exists, re-reading how to treat something you only encounter twice a year, and the quarter-end stretch where three months arrive at once.
They are also the worst hours in the week. Sunday night, after a full day, on the one task you have been avoiding. Work done in that state is slower and less accurate than the same work done by someone doing it on a Tuesday morning as their actual job.
Errors cost more than the fee
The expensive ones are not typos. They are structural, they repeat, and they are found late.
- GST claimed on items that never carried it. Bank fees, most residential rent, some insurance components. Repeated quarterly until someone checks the control account.
- Deductions never claimed because the receipt was lost or the expense went through a personal card and was never brought back in. This one costs money silently and forever.
- Super paid late. Since 1 July 2026 contributions must be received by the fund within 7 business days of payday, not quarterly. Miss it and the super guarantee charge applies. This is the single most expensive DIY error currently available in Australia, and the rule change caught out employers who had been compliant for decades.
- Award classification drift. Staff who gained responsibility and were never moved up a level. Cumulative, and found when someone resigns and checks.
Late information costs decisions
This is the cost owners discount most and regret most.
If your books are three months behind, every decision you make is on three month old information. You take on a job at a price that no longer works. You keep a client who stopped being profitable in March. You find out in October that July was bad, which is too late for October to be any different.
A business with current numbers is not just more compliant. It makes different decisions, earlier, and that gap compounds.
There is also a year end multiplier. An unreconciled file arrives at your accountant as bookkeeping work, and they do it at accountant rates. Plenty of owners save $700 a month on a bookkeeper and hand back a meaningful part of it in a larger accounting bill.
When DIY genuinely makes sense
It is not always the wrong call, and it is worth saying so plainly.
DIY is reasonable if you are a sole trader with no employees, low transaction volume, one bank account and one card, no inventory, and you are disciplined enough to reconcile monthly rather than annually. At that size the work is genuinely small, the risk is low, and the fee would be a real proportion of your turnover.
It stops being reasonable the moment you employ someone. Payroll is where the rules are strictest, the penalties are largest, and the changes are most frequent. One person on the payroll changes the risk profile of the whole exercise.
Want to know what your file would actually cost?
We look first, then quote a fixed monthly fee in writing, including if the honest answer is that you do not need us yet.
The middle option most people miss
It is not all or nothing. The split that works best for owners who want to stay close to the numbers:
- You keep raising invoices and approving bills, because that is where your judgement about customers and suppliers actually matters
- Someone else takes reconciliation, payroll, the month end close and quarter preparation, because those are rules-based and benefit from being done by someone who does them every day
You stay in the file and keep the feel for it. You stop spending Sunday nights on the part that is pure process.
How to decide this week
- Track the hours honestly for one month, including the quarter-end stretch and the time spent looking for things.
- Multiply by what an hour of your attention earns the business.
- Add anything you know went wrong last year and what it cost to fix.
- Compare that total to a fixed monthly quote for your actual file.
If the numbers are close, keep doing it yourself and set a calendar reminder to reconcile monthly. If they are not close, they are usually not close by a wide margin.
See what bookkeeping should cost for the market ranges, or online bookkeeping for how the handover works in practice. Rates and rules referenced here apply for the 2026-27 financial year.
