How many years of bookkeeping records must an Australian business keep?

Australian businesses generally need to keep most tax records for five years, but payroll and company records may require longer retention. According to the Australian Taxation Office, the five-year period can begin at different times depending on the record. Employee records and company financial records generally need to be retained for seven years.

Can I complete overdue bookkeeping myself?

You can complete straightforward overdue bookkeeping yourself if the source documents are complete and you can accurately reconcile every bank, card, loan and payment-platform account. Seek qualified assistance where records involve unresolved GST, payroll, superannuation, amended lodgments or complex asset transactions. Only appropriately registered practitioners may provide certain BAS or tax agent services for a fee.

What documents are needed to bring overdue bookkeeping up to date?

Collect bank and credit-card statements, sales and supplier invoices, receipts, payment-platform reports, loan statements, asset purchase documents and payroll records for every missing period. Also obtain previous Business Activity Statements, tax returns and year-end reports. These documents allow recorded balances to be checked against independent source evidence and help identify duplicate or missing transactions.

What should I do if an overdue BAS may be incorrect?

Reconcile the relevant sales, purchases, GST, payroll and bank records before changing or lodging the Business Activity Statement. According to the Australian Taxation Office, GST mistakes may be corrected on a later BAS only when its correction rules and applicable time and value limits are satisfied. A registered BAS or tax agent can assess the appropriate process.

How do I catch up on overdue bookkeeping before tax time?

Catching up on overdue bookkeeping before tax time means bringing your business records up to date so income, expenses, GST and other obligations can be reviewed accurately. The work involved depends on how long records are behind, the condition of your source documents and whether any reporting dea

Quick answer

Catch up on overdue bookkeeping by listing every incomplete period, gathering source documents and reconciling bank, card, loan, sales, expense, GST and payroll records in date order. Prioritise approaching lodgment deadlines and unresolved discrepancies. According to the Australian Taxation Office, most business tax records generally need to be retained for five years.

Skill level: General guidance
Time: Varies
Trade: Accounting & Business Structures
Updated: 6 November 2026

How do you catch up on overdue bookkeeping before tax time?

What should you know before updating overdue business records?

Useful records can include bank and credit-card statements, sales invoices, receipts, payroll information, loan statements and records of business assets. The ATO explains what records businesses need to keep and for how long.

Bookkeeping is more than entering transactions: payments may need to be matched to invoices, checked against bank statements and recorded in the right accounts and reporting period.

GST and payroll records may need particular attention if your business is registered for GST or employs staff. Reporting obligations and deadlines depend on your circumstances.

A current set of books can help your accountant review the business’s financial position and prepare for tax work, but it does not by itself confirm that a tax return or other lodgment is correct.

ASIC requirements may also matter if you operate through a company, while the Tax Practitioners Board (TPB) regulates registered tax practitioners. CPA Australia and Chartered Accountants ANZ provide information about professional accounting standards and services.

What will a bookkeeping or accounting specialist review?

How far behind the records are, which accounting system you use and whether the source documents are complete.

Whether bank, card, loan and payment-platform balances reconcile with the bookkeeping records.

Whether sales, expenses, GST and payroll have been recorded consistently and whether prior reports or lodgments may need review.

Your business structure and any related record-keeping or reporting obligations, including company requirements where relevant.

What work should be prioritised ahead of tax time, and whether a bookkeeper, accountant or registered tax agent is appropriate for each part.

Common Costly Mistakes

Guessing amounts or relying on memory when receipts, invoices or statements are missing.

Mixing personal and business transactions without identifying and documenting them clearly.

Treating bookkeeping software reports as proof that records are complete or tax-ready.

Leaving overdue activity statements, payroll matters or other reporting issues unmentioned until the tax return is being prepared.

When To Get Professional Help

Consider speaking with a bookkeeper or accountant if the records cover several periods, do not reconcile, or involve GST, payroll or company records. If a tax return or other lodgment is overdue, a registered tax agent can help assess the next steps; the right support depends on your situation.

Talk To A Specialist

If you would like help working out what needs attention before tax time, book a free accounting discovery call. It’s a chance to discuss your records and whether specialist support may be useful: /finance/enquire?service=accounting

Frequently Asked Questions

How do I catch up on bookkeeping before tax time?

Start by identifying which periods and records are incomplete, then gather available source documents such as statements, invoices and receipts. A specialist can help determine what needs reconciling and what should be prioritised, particularly if reporting deadlines are involved.

Can I do overdue bookkeeping myself?

Some business owners can organise and enter straightforward records themselves, but incomplete documents, unreconciled balances or GST and payroll issues can make the work more complex. Whether DIY is suitable depends on your records, obligations and confidence with the accounting system.

What documents do I need to catch up on bookkeeping?

Common records include bank statements, sales and purchase invoices, receipts, loan information and payroll records where relevant. The ATO’s record-keeping guidance can help you understand general requirements, but the documents needed to resolve gaps depend on your business.

Should I lodge my tax return if my bookkeeping is behind?

That depends on whether the underlying records are complete enough to support accurate reporting and whether any deadlines are approaching. Speak with an accountant or registered tax agent about your circumstances rather than lodging figures based on estimates.

Can an accountant help with overdue bookkeeping?

An accountant may review the records, identify gaps and advise on what work is needed before tax preparation. Some bookkeeping tasks may be handled by a bookkeeper, while tax agent services should be provided by an appropriately registered practitioner.

Important — General Information Only

This guide provides general information only and is not personal accounting or business structures advice. It does not take into account your objectives, financial situation or needs. Record-keeping and tax obligations depend on individual circumstances; check current guidance from the ATO and ASIC, and consider seeking advice from a suitably qualified accountant or a tax practitioner registered with the Tax Practitioners Board before acting.

Frequently asked questions

How do I catch up on bookkeeping before tax time?: Start by identifying which periods and records are incomplete, then gather available source documents such as statements, invoices and receipts. A specialist can help determine what needs reconciling and what should be prioritised, particularly if reporting deadlines are involved.
Can I do overdue bookkeeping myself?: Some business owners can organise and enter straightforward records themselves, but incomplete documents, unreconciled balances or GST and payroll issues can make the work more complex. Whether DIY is suitable depends on your records, obligations and confidence with the accounting system.
What documents do I need to catch up on bookkeeping?: Common records include bank statements, sales and purchase invoices, receipts, loan information and payroll records where relevant. The ATO’s record-keeping guidance can help you understand general requirements, but the documents needed to resolve gaps depend on your business.
Should I lodge my tax return if my bookkeeping is behind?: That depends on whether the underlying records are complete enough to support accurate reporting and whether any deadlines are approaching. Speak with an accountant or registered tax agent about your circumstances rather than lodging figures based on estimates.
Can an accountant help with overdue bookkeeping?: An accountant may review the records, identify gaps and advise on what work is needed before tax preparation. Some bookkeeping tasks may be handled by a bookkeeper, while tax agent services should be provided by an appropriately registered practitioner.
How many years of bookkeeping records must an Australian business keep?: Australian businesses generally need to keep most tax records for five years, but payroll and company records may require longer retention. According to the Australian Taxation Office, the five-year period can begin at different times depending on the record. Employee records and company financial records generally need to be retained for seven years.
Can I complete overdue bookkeeping myself?: You can complete straightforward overdue bookkeeping yourself if the source documents are complete and you can accurately reconcile every bank, card, loan and payment-platform account. Seek qualified assistance where records involve unresolved GST, payroll, superannuation, amended lodgments or complex asset transactions. Only appropriately registered practitioners may provide certain BAS or tax agent services for a fee.
What documents are needed to bring overdue bookkeeping up to date?: Collect bank and credit-card statements, sales and supplier invoices, receipts, payment-platform reports, loan statements, asset purchase documents and payroll records for every missing period. Also obtain previous Business Activity Statements, tax returns and year-end reports. These documents allow recorded balances to be checked against independent source evidence and help identify duplicate or missing transactions.
What should I do if an overdue BAS may be incorrect?: Reconcile the relevant sales, purchases, GST, payroll and bank records before changing or lodging the Business Activity Statement. According to the Australian Taxation Office, GST mistakes may be corrected on a later BAS only when its correction rules and applicable time and value limits are satisfied. A registered BAS or tax agent can assess the appropriate process.

Written by Ledger, the Accounting & Business Structures specialist at VIC.Tools.