Tax time in Australia can be straightforward if you spend a little time getting your information together before you lodge. The ATO already pre-fills many fields, but missing details (or weak substantiation) is what commonly leads to delays, amended returns, or ATO follow up.
This guide walks through what to prepare before you lodge, for both individuals and businesses, so you can submit with confidence.
Tax time dates to keep in mind
For most people, the Australian financial year runs from 1 July to 30 June.
In general:
- If you lodge your own return, the due date is often 31 October following the end of the financial year.
- If you use a registered tax agent, you may be eligible for a later lodgment date, but you typically need to be on the agent’s client list before 31 October.
Deadlines can vary by entity type and circumstances, so it is worth checking the ATO’s lodgment information for your situation (see the ATO’s guidance on lodging your tax return).
Step 1: Confirm you actually need to lodge
Many Australians do need to lodge a tax return, but not everyone. Before you start compiling documents, confirm whether you need to lodge a return or a non-lodgment advice. The ATO provides guidance on whether you need to lodge.
If you are unsure, getting advice early can prevent last minute stress, especially if you have multiple income sources or a change in circumstances.
Step 2: Gather the essentials (individuals)
Think of your individual return prep in two buckets: income (what you earned or received) and claims (deductions and offsets you are entitled to).
Income documents to prepare
Even if you plan to use ATO pre-fill, it is smart to have your own records ready to cross-check.
| Income type | What to collect | Common sources |
|---|---|---|
| Employment income | Income statement details (finalised) | myGov linked to ATO, employer payroll |
| Bank interest | Interest summaries | Bank statements, online banking exports |
| Dividends | Dividend statements | Share registry, broker, dividend notices |
| Managed funds/ETFs | Annual tax statement (AMMA) | Fund provider portal, registry |
| Government payments | Payment summary | Services Australia/Centrelink portal |
| Private health insurance | Annual statement | Insurer portal/app |
| Rental income | Rent summary, agent statements | Property manager, bank statements |
| Capital gains/losses | Buy/sell confirmations, cost base records | Broker contract notes, conveyancer records |
| Crypto transactions | Transaction history and disposal details | Exchange reports, wallet records |
| Foreign income | Statements and tax withheld details | Overseas payslips, foreign tax statements |
A common issue at tax time is lodging before all income statements and annual tax statements are finalised. Waiting for final documents reduces the chance you will need to amend later.
Deductions: get the evidence ready
Work-related deductions must generally meet the ATO’s three golden rules: you spent the money yourself, it directly relates to earning your income, and you have a record. The ATO explains the rules and substantiation expectations for work-related expenses.
Prepare a folder (digital is fine) with:
- Receipts or invoices (including GST where applicable)
- Bank or card statements that support the purchase
- A work-related basis for the claim (for example, a diary note or logbook where relevant)
For deductions that often require extra support, set aside time before you lodge:
| Common claim | What the ATO typically expects | What to prepare |
|---|---|---|
| Car expenses (work-related use) | Evidence of business/work use method applied | Logbook (if used), odometer records, running cost receipts |
| Working from home | Method and record-keeping for hours and costs | Diary of hours, relevant bills, calculation workings |
| Self-education | Connection to current income-earning activities | Course invoices, receipts, statement of relevance |
| Gifts and donations | Donation must be to a deductible gift recipient (DGR) | Donation receipts (with DGR details) |
| Tools, equipment, uniforms | Work-related nature and cost | Receipts, employer requirements (if applicable) |
If you are unsure about eligibility (especially for mixed personal and work use), it is often better to ask before lodging than to guess.
Offsets, levies, and personal details people forget
Returns are not just about income and deductions. A few details can change the outcome of your assessment:
- Private health insurance details affect the private health insurance rebate and Medicare levy surcharge considerations.
- Medicare and dependent information may matter if your family circumstances changed.
- HELP/HECS obligations can impact your tax payable depending on your repayment income.
- Super contributions (including any personal contributions you intend to claim as a deduction) require correct paperwork and timing.
If you have had major life changes (moved states, separated, had a child, became an Australian resident for tax, started renting out a former home), make a note before you lodge. These situations can affect what you need to report.
Step 3: Gather the essentials (businesses)
For businesses, tax time is smoother when your bookkeeping and compliance are up to date. The goal is to ensure your figures reflect reality before tax returns are prepared.
Reconcile and validate your bookkeeping
Before you lodge, make sure you can answer these confidently:
- Do your bank accounts reconcile to your accounting file?
- Are income and expenses coded consistently (and not sitting in suspense or uncategorised)?
- Have you correctly captured owner drawings, shareholder loans, or director transactions (where relevant)?
Clean books reduce the risk of incorrect claims and make it easier to substantiate amounts if the ATO asks questions later.
Ensure payroll and super are aligned
If you have employees, confirm your payroll reporting and obligations are complete for the year (including finalisation where required). Also verify that superannuation payments and reporting are consistent with your payroll records.
Prepare business-specific tax documents
Depending on your business, you may need:
| Area | What to prepare | Why it matters |
|---|---|---|
| Sales and invoices | Sales reports and debtor listings | Supports income completeness |
| Expenses | Supplier invoices, subscriptions, insurance | Supports business deductions |
| Asset purchases | Tax invoices, finance documents, dates placed in service | Impacts depreciation and year-end tax position |
| Stock (if applicable) | Stocktake or inventory valuation | Affects taxable income calculations |
| Loan statements | Interest and balance summaries | Separates interest vs principal, supports deductions |
| Contractor payments | Contractor invoices and details | Helps with correct reporting and compliance |
Rules around depreciation and small business concessions can change over time, so it is worth confirming what applies for the specific financial year you are lodging.
Step 4: Use ATO pre-fill, but do not rely on it blindly
The ATO’s pre-fill can save time, but it is not a guarantee of completeness. Some information is reported later than others (for example, some investment statements), and some items may never pre-fill.
A practical approach is:
- Check pre-filled income against your own documents
- Add any missing income (especially distributions, capital gains events, and side income)
- Keep records for every claim you make
If you lodge through myTax, ensure your myGov access is working well before the rush. Account access issues are more stressful when deadlines are close.
Step 5: Avoid the most common pre-lodgment mistakes
A few errors show up repeatedly at tax time:
- Claiming deductions without adequate substantiation (especially for mixed-use items).
- Double counting expenses or income (for example, entering figures that are already included in an annual tax statement).
- Forgetting capital gains tax events, including sales of shares, crypto disposals, or property changes.
- Mismatched rental income and expenses when using agent statements and personal bank records.
- Lodging too early, before income statements or investment statements are finalised.
If you are not confident, getting help can be cheaper than fixing a messy return later.
When it makes sense to use an accountant for tax time
Many people can lodge a simple return themselves, but an accountant is particularly helpful when:
- You have multiple income sources (investments, rental property, contracting)
- You are unsure about deductions and substantiation requirements
- You run a business and need tax planning and compliant financials
- You have late tax returns to catch up
- You need support with bookkeeping, payroll, or compliance
A registered tax agent can also help you stay on top of deadlines and reduce the risk of avoidable ATO issues.
Frequently Asked Questions
What should I prepare before I lodge my tax return in Australia? Gather income documents (income statements, bank interest, dividends, managed fund statements, Centrelink, rental summaries) plus receipts and records for deductions you plan to claim.
Can I lodge before my income statement is finalised? You can, but it increases the risk of missing or incorrect information and needing an amendment. Waiting for finalisation and annual tax statements is usually safer.
How long should I keep tax records in Australia? In many cases the ATO expects you to keep records for several years. The exact period can depend on the record type and situation, so check ATO record-keeping guidance or ask your accountant.
What deductions are most scrutinised at tax time? Work-related expenses commonly get attention, particularly working from home, car expenses, and any claims that are partly private. Strong substantiation is key.
Do businesses need to do anything before tax time besides the tax return? Yes. Reconcile bookkeeping, ensure payroll reporting and super align, confirm asset purchases and stock/inventory where applicable, and validate that income and expenses are properly captured.
What if I have late tax returns? Late lodgment can often be resolved, but it is best to address it early. An accountant can help prioritise what to lodge first and ensure figures are correct.
Get help preparing for tax time with Perfect Accounting & Tax Services
If you want tax time handled with less stress, and fewer “what did I miss?” moments, professional support can make a real difference. Perfect Accounting & Tax Services provides tailored help across Australia, including individual tax returns, business tax services, bookkeeping, late tax return assistance, payroll and compliance support, and superannuation/SMSF advice.
To discuss what you need before you lodge, visit Perfect Accounting & Tax Services and get guidance suited to your situation.
