The minimum deposit for an investment property in Australia is typically 20%, but some lenders may accept a 10% deposit or even a 5% deposit with Lender's Mortgage Insurance (LMI). If you're prepared to use the equity in your own home towards your investment and cross-collateralise the loans, you may not need to save a deposit at all. It's worth talking to an expert like a mortgage broker about what your options are, and what the risks are.