One of the most common questions we hear from business owners is:
“If my Profit & Loss says I made $100,000, why isn’t that the amount I’m paying tax on?”
The answer is simple: accounting profit and taxable income are not the same thing.
While your accounting software calculates your accounting profit, the tax rules often require adjustments before your taxable income is worked out.
Here’s why the two figures are often different.
What Is Accounting Profit?
Accounting profit is the profit shown in your financial statements.
It’s simply: Income – Expenses = Accounting Profit
This number helps you understand how your business has performed during the year and is useful for measuring profitability and making business decisions.
What Is Taxable Income?
Taxable income starts with your accounting profit, but then adjustments are made under tax law.
Some expenses that are perfectly acceptable for accounting purposes aren’t deductible for tax. Other deductions may be claimed for tax even though they don’t appear as an expense in your Profit & Loss.
The result is that your taxable income is often higher—or sometimes lower—than your accounting profit.
Common Tax Addbacks
An addback is an expense that appears in your accounts but can’t be claimed as a tax deduction.
Some common examples include:
- Entertainment expenses
- Fines and penalties
- The private portion of motor vehicle expenses
- Non-deductible expenses like some superannuation contributions or ATO interest
These expenses reduce your accounting profit, but they’re added back when calculating taxable income.
Timing Differences
Sometimes the expense is deductible—it just isn’t deductible yet.
For example:
- Depreciation in your accounts may be different to tax depreciation.
- Employee superannuation is generally only deductible once it’s paid to the fund.
- Prepaid expenses may need to be claimed over more than one financial year.
These are known as timing differences because the deduction is recognised at different times for accounting and tax purposes.
Profit Doesn’t Always Mean Cash
Another common misunderstanding is assuming that profit equals money in the bank.
A business can report a healthy profit while still experiencing cash flow pressure.
That’s because your profit doesn’t take into account:
- Loan repayments
- Asset purchases
- Money owed by customers
- Stock you’ve purchased but haven’t sold yet
This is why it’s possible to have a profitable business while still feeling short on cash.
Why It Matters
Understanding the difference between accounting profit and taxable income helps explain why your tax bill doesn’t always match the profit showing in Xero or your financial reports.
It also highlights why tax planning should happen before year-end. Many of the adjustments that affect taxable income can only be managed before 30 June.
The Bottom Line
Your financial statements tell the story of how your business has performed, while your tax return applies a different set of rules to calculate how much tax is payable.
Although the two figures often start in the same place, it’s completely normal for them to end up looking quite different.
If you’ve ever wondered why your taxable income doesn’t match your accounting profit, or you’d like to better understand your business’s financial results, get in touch with our team. We’re always happy to explain the numbers in plain English.
