Small business accounting: 5 common mistakes small businesses make

When starting out, many small businesses choose to take care of their own books. However, this can be the first of many mistakes, particularly if you have no experience in accounting. Here are some of the most common mistakes that you could fall victim to:
Mistake #1: Mathematical miscalculations
Armed with a calculator, you might think that nothing can go wrong when working out your earnings and outgoings. But it's all too easy to slip up and make mistakes, which can be difficult to spot if you're not used to working with numbers. Errors like this could cost your company in the long term, as you might not have the money to run certain operations, or tax time could hit you in a particularly bad way. It's always best to check figures several times or, even better, ask a professional to handle them for you.
Mistake #2: No backups
Too many small businesses forget to back up their financial records. Whether you're using professional software or not, it's important to have at least two copies of your books. This could be a paper and digital copy or linking your accounts to secure cloud storage. If you don't have any backups, you could quickly find yourself in hot water when your computer's hard drive fails and you have no information to give the taxman.
Mistake #3: Not setting a budget
It's essential to stick to a budget, not just so you know how much you can spend, but also to give you an idea of how your business is growing. Budgeting and forecasting can help you to plan your finances better and highlight areas where you need to cut costs or have room to spend a little extra.
Mistake #4: No separate business and personal accounts
When you use the same account for your personal finances as well as your business, things quickly become confusing. By keeping your finances separate, you'll always know what transactions were commercial and available to claim tax on, and which transactions were your own and unrelated to your business' budget.
Mistake #5: Trying to DIY on your bookkeeping
All of these common mistakes can be avoided by opting to choose a professional bookkeeping service. At Ascent Accountants we’ve been helping small businesses in Perth for many years now to stay organised and on top of their business’ tax, books and overall financials.
With our experience and technical knowledge we can help you better manage your business and free up your time so you can do what you do best and focus more on what you love doing.
And we’re guessing that’s not doing your own bookkeeping!
Need help with your accounting?

If your business provides a car to an employee (or you’re the business owner/employee using it), there’s a good chance the Fringe Benefits Tax (FBT) rules apply. A car fringe benefit arises when a car owned or leased by an employer is made available for the private use of the business owner, an employee or their associate (such as a family member). “Private use” doesn’t just mean weekend road trips — it can include everyday commuting and even cases where the car is parked at an employee’s home, making it available for personal trips. Understanding how FBT is calculated and what records to keep is essential for compliance — and for avoiding paying more tax than necessary. What counts as a “car” for FBT purposes? The FBT law defines a car as a motor vehicle (except a motorcycle or similar) designed to carry less than one tonne and fewer than nine passengers. From 1 July 2022, some zero or low-emission vehicles are exempt from FBT, provided they meet certain criteria — for example, they must be first held and used after 1 July 2022 and must not have attracted Luxury Car Tax. Electric vehicle running costs, such as charging, are also exempt when the vehicle itself qualifies. Two main methods for calculating FBT on cars There are two ways to calculate the taxable value of a car fringe benefit. 1. Statutory formula method This method applies a flat 20% statutory rate to the base value of the car, adjusted for the number of days in the FBT year the car was available for private use. The formula is: (A × B × C ÷ D) − E A = Base value of the car (cost price plus GST and certain accessories, less registration, stamp duty and eligible reductions) B = Statutory fraction (generally 20%) C = Days available for private use D = Total days in FBT year (365) E = Employee contributions If the car has been owned for at least four full FBT years, the base value can be reduced by one-third. 2. Operating cost method This method calculates the taxable value by applying the private use percentage to the total operating costs of the car (actual and deemed costs). The formula is: Taxable value = [Operating costs × (100% − Business use %)] − Employee contributions Operating costs include: Fuel, oil, repairs, maintenance, registration and insurance Lease costs (for leased cars) Deemed depreciation (25% diminishing value) and deemed interest for owned cars Certain costs, such as tolls, car parking and insurance-funded repairs, are excluded. The business use percentage is determined by odometer readings, logbook records, and a reasonable estimate based on usage patterns. The three-month logbook requirement (operating cost method only). If you use the operating cost method, you must keep a logbook for at least 12 continuous weeks (roughly three months) to record: The date of each trip Odometer readings at the start and end Total kilometres travelled Whether the trip was for business or private purposes The purpose of each business trip This logbook is generally valid for five years, but you must start a new one if usage patterns change significantly (e.g., a role change, relocation or different duties). You also need to record odometer readings at the start and end of each FBT year. Why record-keeping matters. Keeping accurate records can support a higher business use percentage (and therefore a lower FBT bill). They also ensure you claim only legitimate business kilometres and help you provide evidence if the ATO reviews your FBT calculation. Finally, your records help you decide which calculation method (statutory or operating cost) is more tax-effective. Key takeaways for businesses and employees. If a car is available for private use, FBT may apply — even if the car isn’t driven often for personal trips. Electric cars may be FBT-exempt if they meet eligibility criteria, but you may still need to calculate their taxable value for reporting purposes. The operating cost method often works better if business use is high — but only if you have a compliant logbook. Keep odometer readings, expense records and a valid logbook to support your claims. Need help with your FBT obligations? Get it at Ascent Accountants. We guide business owners through every step of FBT compliance — from choosing the right valuation method to maintaining the right records for ATO peace of mind. If you provide cars to employees or use a company vehicle yourself, now is the time to review your FBT position before the next FBT year rolls over. Let’s talk .

Hey FIFO workers. You work hard for your money. Let’s make it work hard for you this EOFY. Tax time it’s your chance to set yourself up for long-term financial security. From deductions and super to loan reviews and goal setting, our FIFO EOFY checklist can help you turn your hard-earned income into lasting wealth.

Selling property in Australia? Don’t forget your Clearance Certificate — it could SAVE you THOUSANDS at settlement. If you don’t have one, the buyer is legally required to withhold part of your payment — delaying and reducing what you receive. Applying is free and easy — and Ascent Accountants can help you get it sorte