📊Percentage Calculator

Calculating GST in Your Head

The Goods and Services Tax (GST) in Australia is a flat 10%. To add GST to a price, you increase it by 10% (multiply by 1.1). To find the GST component of a total price, you divide by 11. Our calculator simplifies these common business tasks, ensuring your invoices and BAS statements align with ATO requirements. This is a fundamental skill for Australian small business owners and sole traders.

Australian Taxation Office (ATO)

Cash Rate and Mortgage Percentages

When the Reserve Bank of Australia (RBA) raises the cash rate, banks usually pass on the percentage increase to home loan customers. Even a 0.25% change can add hundreds to your monthly repayment. Use this tool to calculate the percentage impact of rate shifts on your specific loan balance, helping you stay on top of your 'mortgage stress' levels according to ASIC Moneysmart guidelines.

Reserve Bank of Australia (RBA)

Numeracy Standards in Australian Schools

The Australian Curriculum emphasizes 'Number and Algebra' as a core strand, where percentages are introduced in primary school. The ABS notes that high numeracy literacy is essential for the modern Australian workforce. This tool acts as a support for students and lifelong learners, helping to master ratios, proportions, and percentage changes found in everything from science reports to clearance sales.

Australian Bureau of Statistics (ABS)

How do I calculate a percentage of a number?

Simply multiply the number by the percentage value and divide by 100. For example, to find 15% of $250, you calculate (250 * 15) / 100 = $37.50. This is useful for Australians calculating tips, superannuation contributions, or portioning expenses in a shared household.

What is 'Percentage Increase' used for in Australia?

It is most commonly used to track inflation (CPI), salary raises, or property price growth. If a house in Brisbane was $800,000 and is now $880,000, that's a 10% increase. Our 'percentage change' mode tells you the exact growth rate, which is vital for benchmarking your investments against the national average reported by CoreLogic or the ABS.

How do I calculate a discount at an Australian retailer?

If an item at Myer or Kmart is marked '25% off,' multiply the price by 0.75 to find the final cost. Our tool helps you do this instantly, allowing you to compare the 'before' and 'after' prices during EOFY sales or Boxing Day events to ensure you're getting a true bargain.