Managing Money as a Small Business Owner in Australia: A Financial Guide

The most fundamental financial discipline for any small business owner is keeping business and personal money strictly separate. Commingling creates accounting nightmares, tax complications, and no real visibility into either.

• Open a dedicated business bank account from day one - not just a separate personal account, a genuine business transaction account
• Get a business credit card (or debit card) for all business purchases - this creates an automatic expense log
• Pay yourself a regular salary or owner's draw: do not just spend business money on personal needs - pay yourself a set amount regularly
• Never pay personal expenses from the business account unless you record them as drawings and account for them properly
• The ATO scrutinises mixed accounts closely - unexplained deposits and withdrawals trigger questions
• Sole traders: legally you and the business are the same entity, but maintaining separate accounts is still essential for practical management and tax purposes

A structured approach to business cash flow prevents the 'feast and famine' experience common to small business owners - where flush periods are followed by cash crunches.

• Account 1 - Revenue account: all client payments land here, nothing gets spent from it
• Account 2 - Operating account: regular weekly or recurring transfer from revenue to cover wages, rent, suppliers, and operating costs
• Account 3 - Tax reserve account: transfer a fixed percentage of all revenue immediately upon receipt - never spend from this account
• Tax reserve percentage: sole traders should set aside 30-35% of net profit for income tax and GST; companies set aside 25-30% for company tax
• Owner's salary: transfer from the operating account on a fixed schedule - treat it like a payroll, not a cash grab
• Profit account (optional fourth): any surplus after operating costs and tax reserve goes here - use for investment, equipment, or end-of-year profit distribution

Goods and Services Tax (GST) is collected on behalf of the ATO - it is never your money. Treating it as working capital is one of the most common and costly mistakes small business owners make.

• GST registration is compulsory when annual turnover exceeds $75,000 (or $150,000 for non-profit organisations)
• Once registered, you add 10% GST to your invoices and remit it to the ATO (minus GST credits on your own purchases) via your Business Activity Statement (BAS)
• BAS lodgement frequency: quarterly for most small businesses (monthly if turnover over $20 million, or if you request monthly)
• Cash vs accrual accounting for GST: cash basis means you pay GST when you receive payment; accrual means you pay when the invoice is issued - cash basis is better for cash flow management
• Input tax credits: you claim back GST paid on business expenses - keep all receipts and ensure suppliers are GST-registered
• Transfer GST collected to your tax reserve account immediately - do not wait until the BAS is due

Once you are earning business income above the ATO's threshold, you will be required to pay PAYG (Pay As You Go) instalments - quarterly income tax payments based on expected annual income.

• PAYG instalments typically begin after your first business tax return showing tax payable above approximately $1,000
• The ATO calculates an instalment rate or amount based on your prior year income - you can vary this if your income has changed significantly
• Instalments are due quarterly: typically 28 October, 28 February, 28 April, and 28 July
• Under-paying instalments to preserve cash flow backfires: the shortfall becomes due at tax time, often as a lump sum that disrupts cash flow
• Vary your instalments downward if business income drops significantly - use the variation form when lodging your BAS
• PAYG instalments go to the tax reserve account - never surprise money, always anticipated

Small business owners have two super obligations: as an employer (for any employees) and for themselves. Many sole traders neglect their own super entirely - at enormous long-term cost.

• Employer obligations: pay 11.5% Superannuation Guarantee (SG) on ordinary time earnings for all eligible employees, due quarterly (28 October, 28 January, 28 April, 28 July)
• Late super payments: attract a Superannuation Guarantee Charge (SGC) which is not tax-deductible and includes interest and administration penalties
• Sole traders and company directors: you are not required to pay yourself SG - but you should make voluntary contributions
• Concessional contributions (tax-deductible): claim super contributions as a personal tax deduction via a Notice of Intent to Claim form to your super fund - up to $30,000/year (including employer contributions)
• Business owners can make catch-up concessional contributions using unused cap amounts from the prior 5 years if their super balance is under $500,000
• Super is the most tax-effective wealth vehicle available: every dollar contributed saves you your marginal rate minus 15%

Small business owners have access to a wide range of deductions - but claiming them requires accurate records. Poor record-keeping is the number one reason deductions are disallowed in ATO audits.

• Vehicle expenses: actual costs method (logbook for 12 weeks every 5 years) or cents per kilometre (88c/km, up to 5,000km) for business use
• Home office: if you operate from home, claim the occupancy cost proportion (floor area used × proportion of time) or the 67c/hour fixed rate
• Instant asset write-off: small businesses (turnover under $10 million) can immediately deduct the cost of eligible assets up to $20,000 (check current threshold for the relevant income year)
• Professional development: courses, conferences, industry memberships, subscriptions relevant to your business
• Accountant, bookkeeper, and adviser fees: fully deductible
• Insurance: business interruption, public liability, professional indemnity, and relevant personal insurance if business-purpose
• Keep all receipts: the ATO requires substantiation - digital receipt management apps (Dext, Hubdoc) save time and reduce audit risk

Many small business owners treat the business as their retirement plan - assuming they will sell it for a substantial sum. This is a high-risk strategy. Diversifying personal wealth alongside the business provides security if the business is unsaleable or worth less than expected.

• Pay yourself a market salary: even if you reinvest most profit, record a fair salary - this establishes your income for lending purposes
• Super first: maximise concessional contributions - the tax saving is immediate and the compounding is guaranteed
• Small business CGT concessions at sale: four concessions available (15-year exemption, 50% active asset reduction, retirement exemption, rollover) - but these require meeting specific conditions, so do not rely on them without planning
• ETF portfolio outside super: VAS + VGS via a personal brokerage account provides liquid, diversified wealth that is not tied to the business
• Income protection insurance: critical for self-employed - no employer-paid sick leave means a serious illness without coverage is financially catastrophic
• Estate planning: a will and enduring power of attorney are even more critical for business owners - the business may need to operate under a trusted person if you are incapacitated

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