Understanding your income tax obligations is essential for effective financial planning. Our calculator helps you estimate your annual income tax liability based on your net income and other relevant factors.

How to Use the Income Tax Calculator

Using our Income Tax Calculator is simple and quick. Follow these steps to get started:

  1. Enter Your Details:
    • Your Annual Net / After-Tax Income:Input the amount you receive after taxes have been deducted. Please select the frequency of your income from the dropdown menu below:
  • Yearly
  • Monthly
  • Half Monthly
  • Fortnightly
  • Weekly
  • Medical Levy 2% Paid (Yes or No): Indicate whether you pay the 2% medical levy (Yes or No).
  1. View Your Results:
    • Annual Gross Income: See your estimated annual gross income before taxes.
    • Annual Tax Payable: Check the estimated total amount of income tax you owe based on your inputs.
    • Tax to Gross Income Ratio: View the ratio of your annual tax payable to your annual gross income.

Understanding Income Tax

Income tax is a tax imposed by the government on the income earned by individuals and businesses. The amount of tax you pay depends on various factors, including your income level and any applicable levies or deductions.

Benefits of Using an Income Tax Calculator

  • Accurate Estimates: Get an accurate estimate of your income tax liability based on your net income and other details.
  • Financial Planning: Plan your finances better by understanding your tax obligations.
  • Time-Saving: Quickly calculate your income tax without manually checking tax brackets and rates.

Tips for Managing Income Tax

  • Keep Records: Maintain accurate records of your income and expenses to ensure you can claim all eligible deductions.
  • Plan Ahead: Use your estimated tax liability to budget for tax payments and avoid surprises at tax time.
  • Seek Professional Advice: For complex tax situations, consider consulting with a tax professional to ensure you comply with all tax laws and optimise your tax position.

FAQs and Common Questions

What is an income tax calculator?
An income tax calculator helps you estimate the amount of income tax you need to pay based on your annual net income and other relevant factors.

How is income tax calculated?
Income tax is calculated based on a progressive tax system, where different portions of your income are taxed at different rates. Additional levies, such as the medical levy, may also apply.

Why is it important to understand your income tax liability?
Understanding your income tax liability helps you plan your finances effectively, ensures you set aside enough funds for tax payments, and helps you avoid penalties for underpayment.

Can the calculator account for other deductions or credits?
This basic calculator focuses on net income and the medical levy. For a more detailed tax calculation, including other deductions or credits, consider consulting with a tax professional or using a comprehensive tax software.


Using our Income Tax Calculator and following these tips, you can better understand your tax obligations, plan your finances, and ensure you are well-prepared for tax season. As always, this isn’t tax advice. You should still speak with your accountant or tax specialist.