Popular Calculators
Compound Interest Calculator




Mortgage Repayment Calculator
Rental Yield Calculator
Estimate how your investments grow over time using compound interest.
Calculate the rental yield of an investment property based on purchase price and rental income.


Estimate your home loan repayments based on loan amount, interest rate and loan term.


GST Calculator
Quickly calculate Goods and Services Tax (GST) on any amount.
Free Online Calculators
The calculators above are designed to help Australians quickly estimate common financial scenarios. Whether you are planning an investment, analysing a property purchase, or calculating tax or loan repayments, these tools provide simple estimates to help you better understand the numbers.
Financial calculators are useful for exploring different possibilities before making important financial decisions. By adjusting inputs such as investment amounts, interest rates, loan terms, or rental income, you can quickly see how different scenarios may affect potential outcomes.
InvestCalc.au aims to provide clear, easy-to-use financial tools for everyday calculations. Additional calculators will continue to be added over time to expand the range of available tools.



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