Accounting & Tax Calculators

From GST and capital gains tax to superannuation, deductions and business cash flow, choose the calculator you need and get a clearer view of the numbers behind your next decision. 

Our Calculators

Find the Right Calculator for Your Needs

Whether you’re planning ahead, reviewing your tax position or considering a business decision, our calculators provide practical estimates based on the information you enter.

Asset Write-Off & Depreciation

Estimate depreciation or potential deductions for eligible business assets over their effective life.

BAS / GST

Estimate GST collected, GST credits and the potential GST amount payable or refundable for your BAS.

Base Rate Entity (BRE) Tax

Assess whether a company may qualify as a base rate entity and estimate the potential company tax outcome.

Break-Even Analysis

Calculate the sales volume or revenue your business may need to cover its fixed and variable costs.

Capital Gains Tax (CGT)

Estimate a potential capital gain and taxable amount based on your cost base, sale proceeds and other relevant information.

Cash Flow Forecast

Estimate future cash inflows, outflows and closing cash positions to support better business planning.

Division 293 Tax

Estimate whether Division 293 tax may apply to your concessional superannuation contributions and calculate the potential additional tax.

Division 7A

Estimate Division 7A minimum yearly repayments and better understand potential loan repayment obligations.

Fringe Benefits Tax (FBT)

Estimate the taxable value and potential FBT associated with benefits provided to employees or their associates.

Home Office Deduction

Estimate potential work-from-home deductions based on eligible expenses and the information you provide.

Income Tax

Estimate your potential Australian income tax based on your taxable income and other relevant details.

Motor Vehicle Deduction

Estimate potential deductions for eligible work-related or business motor vehicle expenses.

Payroll Tax

Estimate potential payroll tax based on taxable wages and the applicable state or territory rates and thresholds.

Rental Property Deduction

Estimate common deductible rental property expenses and understand their potential effect on your taxable rental income.

Sole Trader vs Company

Compare estimated tax outcomes when operating as a sole trader versus through a company structure.

Superannuation Contribution Caps

Estimate your superannuation contributions against applicable concessional and non-concessional contribution caps.

Trust Distribution

Explore how different distribution amounts may allocate trust income between beneficiaries based on the information entered.
PLAN WITH CLARITY

Understand the Numbers Before You Decide

Tax and business decisions often involve more than one number. Income, deductions, GST, superannuation, business structure and other factors can all influence the final outcome. Our calculators give you a practical way to estimate key figures before a lodgement deadline, major decision or planning discussion.

Whether you’re checking income tax, reviewing a capital gain, comparing business structures, forecasting cash flow or estimating super contributions, you can choose the calculator that suits your situation. The results provide a useful starting point, while SMH Accountants & Advisors can help you understand what those numbers mean for your broader financial position.

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Frequently Asked Questions

Get clear answers about using our calculators and interpreting the estimates they provide. 

Are the calculators free to use?

Yes. You can use our online accounting and tax calculators to estimate a range of tax, business and financial outcomes.

Our calculators provide estimates based on the information you enter and the assumptions, rates and rules applied within each calculator. Actual outcomes can vary depending on your circumstances and the tax rules that apply at the relevant time. 

The calculators can help you estimate certain figures, but they are not a substitute for preparing and lodging a complete tax return or obtaining professional tax advice.

It depends on what you want to calculate. For example, you can use the Income Tax Calculator for an income tax estimate, the CGT Calculator when assessing a capital gain, or the BAS / GST Calculator for GST-related calculations.

Yes. Several calculators are specifically useful for businesses, including the BAS / GST Calculator, Payroll Tax Calculator, Division 7A Calculator, Break-Even Analysis Calculator and Cash Flow Forecast Calculator.

No. The calculators provide general estimates and information only. The results should not be relied upon as personal tax, accounting, financial or legal advice. 

If your circumstances involve multiple entities, companies, trusts, investments, property, significant deductions or other complex tax matters, professional advice may provide a more accurate assessment.

Need More Than an Estimate?

Speak with SMH Accountants & Advisors for practical assistance with taxation, accounting, business planning and ongoing compliance.