My Bookkeeping Is Months Behind — Where Do I Start?

Falling behind on bookkeeping is extremely common, and it's recoverable — the way out is a structured catch-up process, not trying to do four months of admin in one sitting. Working backward, period by period, with the right records gathered first, turns an overwhelming task into a manageable one.

Bookkeeping rarely gets skipped because someone decides not to do it. It gets pushed aside during a busy stretch, and the longer it sits, the more daunting it feels to start again — which pushes it further. There's no judgement in being behind. There's just a next step.

1. Gather everything first. Bank and credit card statements, invoices sent, receipts, and any records of cash transactions, for the full period you're behind.

2. Reconcile the bank account. Match every transaction on the bank statement to your accounting records. This is the foundation — everything else builds on it being accurate.

3. Categorise transactions systematically. Work through them in batches by type — all income first, then all expenses by category — rather than jumping around.

4. Chase missing information as you go. A transaction you can't identify is worth resolving now, while it's recent enough to remember, rather than guessing.

5. Reconcile GST if registered. Once transactions are categorised, check your GST position is accurate before it feeds into a BAS.

6. Work period by period, not all at once. Finish one month completely before moving to the next — it creates real progress markers instead of one enormous, undifferentiated task.

• Anything with a deadline attached. An overdue or upcoming BAS takes priority over general tidying.

• Bank reconciliation over categorisation detail. Knowing your numbers are accurate matters more, initially, than having every transaction perfectly labelled.

• Recent periods over old ones. The most recent months are usually most urgent for understanding your current position — older periods can follow.

• Set a fixed, recurring time each week or fortnight specifically for bookkeeping — treat it as an appointment, not a someday task.

• Reduce the manual effort involved — bank feeds and receipt-capture tools in accounting software remove much of the reason it gets deferred.

• Reconcile monthly at minimum, so you're never more than one period behind at any point.

• If time genuinely isn't there, consider whether a bookkeeper is a better use of your hours than doing it yourself.

• How many months am I actually behind, specifically?

• Do I have all the source records — statements, invoices, receipts — for that period?

• Is there a BAS or tax deadline that makes part of this urgent?

• What would need to change for this not to happen again?

• you're more than a month or two behind and the catch-up feels genuinely unmanageable alone;

• there's an overdue or upcoming BAS or tax deadline attached to the backlog;

• you're not confident your bank reconciliation is accurate once you've caught up; or

• you want ongoing bookkeeping support so this doesn't recur.

→ Do I Need Accounting Software When My Business Is Still Small?

→ How Often Should I Reconcile My Business Bank Account?

→ What Should I Review Every Month in My Business Accounts?

SKC Accounting | Knowledge Centre | Knowledge Guide 020

Last reviewed: August 2026

General information only. This guide does not take into account your individual circumstances and is not a substitute for professional accounting, taxation, legal or financial advice.