If you travel overnight for work, keeping the right records really does matter. One area that often causes confusion is the ATO travel diary rule. Many people assume that as long as they have their receipts, they are covered, but that is not always the case.

Here is a practical and easy-to-follow guide on when a travel diary is required, what needs to be recorded, and how travel allowances fit into the picture.

When Can You Claim Overnight Travel Expenses?

You can generally claim accommodation, meals and incidental expenses if:

• You travel away from home
• You stay away overnight
• You are temporarily working somewhere other than your regular workplace

You cannot claim if you return home the same day, if you are living at the work location, or if the expenses are private in nature. The ATO is clear that you must stay away from home overnight for the travel to be deductible.

See ATO: Overnight travel expenses for details and examples.

When Do You Need a Travel Diary?

This is where many people get caught out.

The general rule is:

• Away for fewer than 6 consecutive nights → No travel diary required
• Away for 6 or more consecutive nights → Travel diary required

The ATO states that if you are away for 6 or more nights in a row, you generally need to keep a travel diary.

Even if your trip is shorter than 6 nights, it can still be helpful to keep notes, especially if there is a mix of work and private activities. See ATO: Travel expenses for example of travel diary.

What Is a Travel Diary and What Must It Include?

A travel diary is simply a record of what you did while travelling for work. It helps show which parts of your trip were work-related and supports how you worked out your claim. Unless an exception applies, the ATO requires you to keep records that may include both written evidence and a travel diary.

Think of it as practical evidence that explains your claim if the ATO ever asks questions.

What If You Receive a Travel Allowance?

Receiving a travel allowance does not automatically mean you do not need records.

There are record-keeping exceptions if:

• You receive a genuine travel allowance
• You incur deductible travel expenses
• Your claim is within the ATO reasonable amounts

For domestic travel, if you meet these conditions, you may not need to keep written evidence or a travel diary.

However, if your claim exceeds the reasonable amounts, you must keep:

• Written evidence for the entire claim
• A travel diary if you were away 6 or more nights

Overseas travel has stricter rules, and accommodation receipts are always required. See ATO: Travel allowance for more details.

Simple Ways to Stay Compliant

To make things easier:

• Keep your flight confirmations and hotel invoices
• Save digital copies of receipts
• Use your calendar to track work activities
• Make a short note at the end of each travel day
• Clearly mark workdays and private days

Good habits during the trip will save time and stress at tax time.

If you are away for 6 or more consecutive nights, you should keep a travel diary, and if you receive a travel allowance, make sure the record-keeping exception genuinely applies before assuming you do not need records. Travel claims are an area the ATO reviews closely, so keeping clear and timely records will help protect your deduction and reduce risk if your return is ever reviewed.