Calculators

Tax and finance calculators

Local browser-only tools for common tax, GST, superannuation, savings, debt, investment, and insurance estimates. Use them as preparation aids before seeking advice from the Merrylands office.

Choose a calculator Ask the office

Available tools

Choose a calculator

Calculations happen in your browser and do not send entries to the website.

Available

Tax calculator

Income Tax Calculator

Estimate Australian resident income tax, Medicare levy, marginal rate, and after-tax income by financial year.

Individuals checking annual, monthly, fortnightly, or weekly take-home pay
Clients comparing employment income and other taxable income
Planning conversations where income tax and Medicare levy need to be visible

Open Income Tax Calculator

Available

Business calculator

GST Calculator

Add or remove GST from an amount and show the GST-exclusive price, GST component, and GST-inclusive price.

Small businesses reviewing quotes and invoices
Clients separating GST from an inclusive total
Sole traders organising expense figures before BAS review

Open GST Calculator

Available

Super calculator

Employer Super Contributions Calculator

Estimate minimum employer super contributions from income, pay frequency, age, and weekly hours.

Employees checking expected employer super on payslips
Small employers preparing payroll conversations
Clients comparing annual and periodic super contribution expectations

Open Employer Super Contributions Calculator

Available

Budget calculator

Simple Money Manager

Compare money coming in with money going out across a chosen weekly, fortnightly, monthly, quarterly, or annual period.

Clients checking whether regular income covers regular expenses
Households preparing a quick cashflow snapshot
Small business owners separating income and running costs before a discussion

Open Simple Money Manager

Available

Budget calculator

Budget Planner

Plan income and expense categories, show surplus or shortfall, and identify the largest regular expense category.

Clients organising household or sole-trader spending
Preparing cashflow notes before a tax or business appointment
Finding which expense category is driving most regular outgoings

Open Budget Planner

Available

Savings calculator

Savings Goals Calculator

Estimate projected savings, time to reach a target, and the monthly contribution needed for a goal.

Saving for tax bills, deposits, equipment, or emergency funds
Comparing how regular saving changes the time to a goal
Checking the monthly amount needed by a selected date

Open Savings Goals Calculator

Available

Finance calculator

Net Worth Calculator

Add up key assets and debts to produce a simple current net worth snapshot.

Clients collecting a simple personal balance sheet
Reviewing assets and debts before a planning discussion
Checking whether liabilities are outweighing listed assets

Open Net Worth Calculator

Available

Debt calculator

Credit Card Calculator

Estimate credit card payoff time, interest, and the savings from paying more than the minimum.

Clients checking the cost of carrying card debt
Comparing minimum repayments with a higher fixed repayment
Preparing a faster debt repayment plan

Open Credit Card Calculator

Available

Debt calculator

Interest-Free Deal Calculator

Measure the true monthly repayment and fees behind an interest-free purchase offer.

Checking whether a retail finance deal is still affordable after fees
Comparing fee-heavy interest-free offers
Planning repayment amounts before committing to a purchase

Open Interest-Free Deal Calculator

Available

Debt calculator

Payday Loan Calculator

Estimate establishment fees, monthly fees, total repayable, and fortnightly repayments for a small payday loan.

Understanding how short-term borrowing fees add up
Comparing loan length and repayment pressure
Avoiding underestimates of total repayable cost

Open Payday Loan Calculator

Available

Investment calculator

Managed Funds Fee Calculator

Compare how management costs, contribution fees, adviser fees, and other costs affect long-term fund balances.

Comparing two investment fee structures
Checking how annual percentage and fixed fees affect balances
Preparing questions about fund costs before seeking licensed advice

Open Managed Funds Fee Calculator

Available

Super calculator

Super and Pension Age Calculator

Check preservation age and Age Pension age from month, year of birth, and sex.

Confirming key retirement age milestones
Preparing a retirement-planning discussion
Checking preservation age before asking about super access

Open Super and Pension Age Calculator

Available

Insurance calculator

Life Insurance Calculator

Estimate a life cover amount from debts, living costs, education needs, funeral costs, and available assets.

Stress-testing family financial protection
Estimating debt, living cost, and education funding needs
Preparing a discussion with appropriately licensed advisers

Open Life Insurance Calculator

Available

Finance calculator

Compound Interest Calculator

Project savings growth from an initial deposit, regular deposits, compounding frequency, term, and interest rate.

Clients comparing savings strategies
Families planning a future deposit or tax bill reserve
Business owners modelling regular retained-cash savings

Open Compound Interest Calculator

Limitations

What these calculators are for

General estimates

Outputs are estimates only and do not replace advice based on your full records.

Browser-only

The calculators run locally in the page and do not request sensitive identifiers.

Ask before acting

Tax, GST, and super outcomes depend on circumstances, records, and current law.

Merrylands office

Ready to discuss your tax or accounting matter?

Send an enquiry or call the office to arrange an appointment. If you are contacting us about a tax return or BAS, include the type of work you need help with and any upcoming deadlines.

Suite 2, Level 1, 204 Merrylands Road, Merrylands NSW 2160

Open Monday to Friday, 9:00 AM – 6:00 PM

Send an enquiry (02) 9637 3839