Key Takeaways
- Large tax bills often catch business owners off guard, but they’re usually avoidable with proper planning
- Poor record-keeping and underestimating income are common causes of tax surprises
- Setting aside tax money regularly can smooth out cash flow and reduce financial pressure
- Working with an accountant throughout the year can help you forecast your tax and stay on top of PAYG instalments
- If you do receive a large tax bill, there are options to manage it without panic
One of the biggest financial shocks for small and trade business owners comes in the form of an unexpected tax bill. You’ve had a good year, cash has been flowing, and then your accountant tells you that you owe tens of thousands to the ATO. Suddenly, that cash is no longer available, and stress levels rise.
The good news is that large tax bills don’t have to catch you off guard. With a little planning and consistency, you can build a strategy to handle them without the stress. Whether you’re a plumber, builder, electrician, or owner of a growing small business, here’s how to avoid being blindsided at tax time.
1. Understand Why Large Tax Bills Happen
The first step is to understand why these big bills show up in the first place. Some common reasons include:
- Business profits were higher than expected, and you didn’t set aside enough for tax
- PAYG instalments were underestimated, or not paid at all
- Poor record-keeping, leading to missed deductions or inaccurate estimates
- Lack of regular check-ins with your accountant, which means you didn’t see it coming
All of these issues are fixable. And the earlier you identify them, the easier they are to manage.
2. Forecast Your Tax Throughout the Year
One of the best ways to avoid a surprise bill is to treat tax like any other regular expense. If you know roughly how much you’ll owe, you can budget for it in advance.
Start by asking your accountant to help you estimate your annual tax liability. From there, divide that amount into monthly or fortnightly chunks and set it aside in a separate savings account.
For example, if you expect to owe $24,000 in tax for the year, putting away $2,000 each month will keep you on track. This way, you’re not left trying to scramble for the full amount at once.
3. Get on Top of PAYG Instalments
If you’re paying PAYG instalments, make sure they’re accurate. The ATO will either calculate an amount based on your last tax return or give you a percentage of your income to pay each quarter.
However, if your income has increased (or decreased), your PAYG instalments may no longer reflect your current tax position. It’s important to review them regularly and vary the amount if needed.
Many tradies and small business owners get caught out when they make significantly more profit in a year, but their PAYG instalments are still based on the previous year’s lower income.
Speak to your accountant about reviewing and adjusting your PAYG instalments, so you’re paying the right amount throughout the year—not playing catch-up at tax time.
4. Keep Accurate and Up-to-Date Records
Good bookkeeping isn’t just about ticking boxes—it’s your early warning system.
With up-to-date records, you can:
- Monitor your income and expenses in real time
- Track profitability across different jobs or projects
- See how much tax you may owe as your income rises
Cloud accounting software like Xero or MYOB makes it easier than ever to automate this process. And if you’re too busy on the tools to manage it yourself, consider engaging a bookkeeper who understands your industry.
5. Make Super Contributions on Time
Superannuation for employees is not only a legal requirement but also a significant part of your tax planning. Paying super on time ensures you can claim it as a deduction in the same financial year.
If you miss the quarterly due dates, not only will you miss the deduction, but you may also face penalties and interest.
For business owners looking to reduce taxable income, personal super contributions can also be an effective tool, especially when managed with guidance from an accountant.
6. Consider Setting Up a Tax Holding Account
If you struggle with spending money that should be set aside for tax, try opening a separate bank account specifically for tax savings.
Each time you receive payment from a client, transfer a set percentage (say 25–30%) into the tax account. This simple step makes it easier to manage cash flow and ensures you don’t accidentally dip into money that will eventually go to the ATO.
This strategy is particularly useful for sole traders and partnerships, where tax isn’t automatically withheld from your income.
7. What to Do If You Get a Large Bill
If a big tax bill still sneaks up on you, don’t panic and don’t ignore it. The ATO offers payment plans that allow you to pay your tax debt in instalments.
The key is to act early. Talk to your accountant or contact the ATO to set up a payment plan that works for your cash flow.
Avoid taking out high-interest loans or using personal credit cards to pay tax debt unless you’ve exhausted other options.
Final Thoughts
Tax bills are part of doing business, but they don’t have to be overwhelming. The real stress comes from being unprepared. With some forward planning, regular reviews, and a bit of discipline, you can turn tax time from a headache into a manageable part of your financial rhythm.
If your trade business is growing and you’re earning more than ever, now is the time to get a better handle on your tax. Speak to the team at Toyne, put the right systems in place, and start planning today so you won’t be caught out tomorrow.
