A missing receipt may feel minor when business is busy. But when it is time to prepare a BAS, finalise payroll, claim a deduction or answer an ATO question, that one missing piece can create unnecessary work. Understanding what records must businesses keep helps you protect your deductions, meet your obligations and make better decisions from clear financial information.
For most Australian businesses, good record keeping is not about creating more paperwork. It is about having a reliable trail showing what you earned, what you spent, who you paid and why each transaction occurred. Whether you are a sole trader in Perth, a growing company or a trust with employees, the principles are similar, although the detail will depend on your structure, registrations and industry.
What records must businesses keep for the ATO?
Australian businesses generally need to keep records that explain all transactions relevant to their tax and reporting obligations. Those records need to be in English, or readily convertible into English, and must be kept in a way that allows the information to be accessed if requested.
At a practical level, this means retaining evidence of your income, expenses, assets, liabilities and tax payments. A bank statement alone is not always enough. It shows that money moved, but it may not explain the business purpose of the payment or whether GST was included. The supporting invoice, receipt, contract or finance document fills in that picture.
Your records should also make it possible to prepare and substantiate your income tax return, BAS and GST reporting, payroll reporting and any other statements you are required to lodge. If a transaction is unusual, significant or partly private, keep a short note explaining the treatment. This is particularly helpful for motor vehicle costs, home-based business expenses, travel, entertainment and purchases used for both business and personal purposes.
The core business records to retain
The exact documents will differ between businesses, but a well-organised file system usually includes the following records:
- sales invoices, receipts, point-of-sale reports, online sales reports and other evidence of income;
- purchase invoices, receipts, supplier statements and expense claims;
- bank account, credit card, loan and merchant facility statements;
- records of cash sales and cash payments, including petty cash where used;
- contracts, quotes, purchase orders, leases, insurance policies and finance agreements;
- asset purchase documents, depreciation schedules and records of asset sales or write-offs;
- stocktake records, where your business buys and sells trading stock;
- BAS workpapers, GST calculations, lodged activity statements and payment confirmations; and
- income tax returns, assessments, instalment notices and correspondence relating to tax matters.
Digital records are acceptable, and for many businesses they are easier to search and protect than paper files. A photo of a receipt can be useful, provided it is clear, complete and stored safely. Accounting software can also bring invoices, bank transactions and reporting together, but it does not remove the need to check that transactions have been coded correctly.
GST and BAS records need extra care
If you are registered for GST, your records need to support the amounts reported on each BAS. This means being able to identify GST collected on sales, GST paid on eligible purchases and transactions that are GST-free, input taxed or outside the GST system.
Tax invoices are especially relevant for purchases where you intend to claim GST credits. For larger purchases, the documentation should clearly show the supplier, ABN, date, amount and GST information required for a valid tax invoice. Keep adjustment notes as well, such as credit notes issued after a refund, discount or returned goods.
Regular bookkeeping makes BAS preparation far more straightforward. Waiting until the deadline to sort months of transactions increases the chance of duplicated entries, missed invoices and GST claimed incorrectly. A monthly review allows problems to be identified while the detail is still fresh.
Keep evidence for private and mixed-use expenses
Many small business owners pay for costs that have both business and private elements. A mobile phone, internet connection, vehicle or home office are common examples. You can usually only claim the business portion, so keep records showing how you calculated it.
A reasonable usage diary, logbook or supporting schedule may be needed depending on the expense. The right method varies. For example, vehicle claims have specific rules, while home office costs may require a record of hours worked from home. The key is to use a method that reflects your actual circumstances and retain the evidence behind it.
Payroll and employee records
Employers have record-keeping obligations beyond tax. Employee records generally need to be kept for seven years under workplace laws. They must be accurate, legible and readily accessible to the employee if they are entitled to inspect them.
These records commonly include employee details, employment type, pay rates, hours worked where relevant, overtime, leave balances and leave taken, superannuation contributions, deductions, termination details and copies of payslips. You should also retain records supporting PAYG withholding and Single Touch Payroll reporting.
Awards, enterprise agreements and individual arrangements can affect what must be recorded and how employees are paid. This is an area where assumptions can become costly. A payroll system may calculate pay, but someone still needs to ensure the employee classification, ordinary hours, allowances and leave settings are correct.
For contractors, retain the contract, invoices, payment details and any records that support your decision to treat the worker as a contractor. The label used in an agreement is not always the deciding factor. The working relationship and relevant obligations need to be considered carefully.
Company, trust and partnership records
Your business structure creates further record-keeping responsibilities. Companies need to maintain financial records that correctly record and explain transactions, financial position and performance. They also need to keep company registers, director and member details, minutes or resolutions, and records of share issues or transfers where applicable.
Trustees should retain the trust deed, amendments, trustee resolutions, beneficiary distribution records, financial statements and tax returns. These documents are essential when determining how income has been distributed and reported. A resolution prepared after the relevant deadline may not achieve the intended tax outcome.
Partnerships should keep the partnership agreement, records of partner contributions and drawings, profit-sharing arrangements and financial statements. Even where there is no formal written agreement, clear records reduce the risk of disputes and make year-end reporting easier.
How long should business records be kept?
As a general rule, ATO-related business records should be retained for at least five years from the date you lodge the relevant tax return or activity statement, or from when the records were prepared, obtained or completed, whichever is later. In some circumstances, records must be kept longer.
Capital gains tax records may need to be retained for at least five years after the relevant asset is sold, which can be many years after the original purchase. Asset records, carried-forward losses, depreciation information and documents connected to ongoing tax positions can also have a longer life. Employment records generally have a seven-year retention period.
If you are unsure whether a document can be destroyed, it is usually sensible to keep it until you have checked the applicable requirement. Storage is inexpensive compared with reconstructing records during a review or audit.
A simple system is better than a perfect one you do not use
The best record-keeping process is one that fits into the way you operate. For a sole trader, that may mean using accounting software, photographing receipts as they are received and reviewing transactions once a week. A business with staff and higher transaction volumes may need documented approval processes, payroll controls and regular reconciliations.
Separate business and personal bank accounts wherever possible. This single step reduces confusion, saves bookkeeping time and makes it easier to see how the business is performing. Reconcile your bank accounts regularly, follow up missing invoices promptly and back up digital files using secure storage.
It is also worth setting a routine for reviewing reports rather than viewing them only at tax time. A current profit and loss report, aged debtor list and cash position can help you decide when to follow up customers, manage expenses or plan for upcoming tax and superannuation payments.
Good records give you more than a compliance file. They provide the clarity to run your business with confidence and reduce the stress that often arrives when a deadline is already close. If your records are behind, inconsistent or difficult to understand, an accountant can help put a practical process in place at your convenience.
