Catch Up Bookkeeping When You're Months Behind on Bank Recs

It's Oct 2026, your accountant has asked for the year-end numbers twice, and the last time anyone reconciled the bank account was 31 Mar 2026. You're not the first, and it's fixable. The plan is simple: find the last month you can trust, then work forward one month at a time, oldest first, without skipping. Here's how to make catch up bookkeeping bearable.

First, don't panic-start in the wrong place

The instinct is to open this month's statement and start there. Resist it. A reconciliation only works if the opening balance is right, and the opening balance for this month depends on every month before it. If you start at the end, every difference you find is a mix of this month's issues and five months of old ones. You'll go round in circles.

Start at the beginning of the gap instead.

Step 1: Find your last good reconciliation

Look for the most recent month where:

• there's a reconciliation report (or at least a record that it was done)
• the closing balance in your books matched the bank statement
• nobody has edited transactions in that month since

That month is your anchor. If you can't find one at all, use the end of the last financial year your accountant finalised, because their closing figures are a trustworthy starting point.

Step 2: Gather every statement for the gap

Download statements for every account, for every month in the gap. Business account, savings, credit cards, PayPal or any payout account you use. Bank feeds usually only bring in recent history, so for older months a downloaded CSV statement is often the way in. Save them all in one folder with clear names like "Business account Apr 2026.csv".

Step 3: Size the job honestly

Before you start, count. Is this a weekend job or a month of evenings? It helps to know.

Here's an illustrative example. Chloe runs a mobile dog-grooming van in Newcastle. Her last good reconciliation was 31 Mar 2026. Today she's looking at six months of backlog.

Check: 142 + 156 + 171 + 149 + 163 + 158 = 939.

Most of those are regular: card takings, fuel, shampoo supplies, phone, insurance. Maybe 10 to 15 per cent will need any real thought. That's still a decent chunk of work, but it's not 939 puzzles. It's around 100 puzzles and 800 clicks.

Step 4: Get categories right before you match

Catching up is mostly categorising. Before you match a single line, set yourself up:

• Make a short list of the categories you use most. For Chloe: grooming income, grooming supplies, vehicle fuel, vehicle repairs, phone and internet, insurance, bank fees, owner drawings.
• Decide the regular ones once. Her fuel card is always fuel. Her phone direct debit is always phone and internet. Don't rethink them 30 times.
• Keep a "come back to" list for anything you can't identify. Don't let one mystery $73.80 stop the whole month.

Step 5: Reconcile one month, finish it, move on

This is the core of it. For each month, in order:

1. Import or bring in that month's transactions.
2. Categorise them.
3. Match them against anything already in your books (invoices paid, bills paid).
4. Enter bank-only items: fees, interest, direct debits.
5. List outstanding items at month end.
6. Check the adjusted balances agree.
7. Sign off the month.

Only then start the next month. If April 2026 doesn't balance, May 2026 won't either. Finishing each month properly is what keeps the whole catch-up from collapsing into one giant unsolvable difference.

Step 6: Give 30 Jun 2026 extra attention

If your gap crosses 30 Jun 2026, like Chloe's does, the end of FY2025-26 is inside the backlog. That month matters more than the others, because it's what your accountant uses for the year-end work. Spend a bit of extra care on June 2026:

• make sure every customer payment received before 30 Jun 2026 is matched to its invoice
• make sure bills paid before 30 Jun 2026 are recorded as paid
• list outstanding items at 30 Jun 2026 clearly
• clear out any "come back to" items from Apr 2026 to Jun 2026 before you move on to Jul 2026

Then send your accountant the June 2026 reconciliation as soon as it's done. They can start their part while you carry on with the rest.

Step 7: Clear the "come back to" list

At the end, you'll have a handful of mystery transactions. Work through them:

• search your email for the amount
• check your card's merchant description online
• ask your bank for the payee details on an EFT
• ask staff or family members who had access

If something truly can't be identified, don't guess. Park it in a clearly named holding account, note what you tried, and ask your accountant how they'd like it treated. A small, documented list is fine. A big, undocumented one isn't.

How long will it take?

It depends on volume and how tidy your records are. As a rough guide from our own experience, a regular-transaction business like Chloe's might need one to two hours per month of backlog for the first month, dropping as the categories settle and the rhythm sets in. Months with a lot of one-off spending take longer.

Don't try to do six months in one sitting. Two or three sessions a week of an hour or so each is more accurate than one exhausted Sunday.

When to call in help

Get a bookkeeper or BAS agent involved if:

• you're more than a year behind
• the opening balance from your last "good" month doesn't actually agree with the bank
• several accounts or entities are mixed together
• you've had staff or a previous bookkeeper leave without handover

There's no shame in it. A professional who catches up books every week will be faster, and you can take over once you're current.

Staying caught up afterwards

The catch-up is the hard part. Staying current is easy by comparison, as long as you change one habit: reconcile little and often. Pick a frequency that matches your volume (for Chloe, weekly) and treat it as a booked appointment.

How HelloBooks helps

If you're catching up in HelloBooks, you can import older bank statements as CSV and connect your bank account for transactions going forward. Everything lands in a review list where you confirm or change categories. On Pro, AI auto-categorisation suggests categories as transactions come in, which takes much of the grind out of a backlog. If your AI credits run out, AI categorisation pauses but your books keep working.

The reconcile screen puts an AI match suggestion with a confidence score and reason on each line, so you're mostly confirming and only working through exceptions. Each finished month produces a reconciliation report you can export as PDF or CSV and send to your accountant, and you can lock each month once it's signed off. Your accountant can also be invited into the same books.

One honest note: the Free plan covers up to 200 transactions a year, so a backlog like Chloe's is beyond it. Check Australian pricing for the plan that fits, and see how bank reconciliation works.

FAQs

Should I reconcile the most recent month first to see where I stand?

No. Start from your last good reconciliation and work forward. A later month's balance depends on every month before it.

Can I just make one big adjustment to bring the books into line?

Not without understanding what it is. A single unexplained adjustment hides errors and makes your reports unreliable. Your accountant will ask about it anyway.

My bank feed only shows recent transactions. What about older months?

Download statements for those months from your internet banking, usually as CSV, and import them.

What if I can't find a good starting point at all?

Use the closing figures from the last year your accountant finalised. If those aren't available, talk to your accountant before you start.

How do I avoid falling behind again?

Reconcile weekly or fortnightly in short sessions, and lock each month once it's signed off so it stays put.

Six months behind is a project, not a crisis. Start at the beginning and keep going.

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