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How much deposit do you need to buy a home?

Are you a first home buyer? Work out the deposit you’ll need upfront to meet the purchase price, other costs you need to bear in mind when buying a home, and ways to get into your home sooner.

Calculating your price range

The first step in getting a house deposit together to buy your new home is to know what kind of price range you should be looking at. Knowing your price range will mean you can look at a potential home without worrying if it’s within your budget.


Check our Affordability Calculator. It’ll give you a good idea of the range of property purchase prices that might work for your financial situation.


Larger home loan deposit = less to borrow

Once you’ve found a house that fits your budget, it’s time to work out what deposit you can put down. A larger deposit means you’ll need to borrow less, which means you’ll pay less interest and potentially lower monthly repayments.


Usually, 20% of the full value of the house is a good amount to aim for as a deposit. You can still get a loan if you have a smaller deposit, but you may need to take out Lenders Mortgage Insurance (LMI) which adds an additional cost to your loan. It’ll also take longer to pay off.


Most lenders will use a loan to value (LVR) calculation to assess the amount they are willing to lend for a home loan. LVR is the amount of your loan compared to the Bank’s valuation of your property, expressed as a percentage.


For example, a loan of $400,000 to buy a property worth $500,000 results in a loan to value ratio of 80%. Banks place a limit on the loan to value ratio depending on things such as the type of property, the location and your financial position.


If the bank is lending you anything more than 80% LVR, you’ll generally need Lenders Mortgage Insurance.



Example of deposit amounts
Full value of property Minimum deposit


(no Lenders Mortgage Insurance)


(with Lenders Mortgage Insurance)

$600,000 $120,000 $30,000
$500,000 $100,000 $25,000
$400,000 $80,000 $20,000
$300,000 $60,000 $15,000


Once you know the total amount you need to buy the house, and the size of deposit you’ll need, use our Home Saver Calculator to help you easily work out how long it may take to save the deposit for your new home.


Other upfront costs to consider

There’s more to buying a home than just the cost of the house itself. There are some other upfront costs you’ll need to know about.

Stamp duty

Stamp Duty is a state and territory government tax that can fluctuate depending on things such as location, whether it’s a first home or an investment, and the price of the property. It’s important you take this into consideration when looking to buy a property – our Stamp Duty calculator can help give you an idea of how much this may be.

Legal costs

Several legal steps are involved when buying property. Conveyancing (the sale and transfer of real estate) can include a property and title search, the review and exchange of the contract of sale, the transfer of the title, and other aspects too. 

Mortgage establishment and registration fees

These can depend on the state in which you live and who your lender is. Knowing whether these apply to you is also important. Find out more about the upfront costs of buying a home


Factors that can affect your loan and interest rate

Now you know your price range, how much you need for your deposit, and the other potential upfront costs. In addition to these, there are a few other factors that may affect the amount a lender is willing to loan you and the interest rate they might charge.


Your credit report and score helps lenders assess your ability to repay and manage credit, which can affect the size of the loan and the interest rate. A higher credit score can see larger loans at lower rates, while a lower score might see the opposite.


Having a savings plan to help accumulate your deposit is a good way to show you can meet home loan repayments – also, make sure you’re making regular repayments on credit cards or other credit products you have, to help increase your credit score.


Support for first time buyers

The government has a one-off payment that can be made to first-time home buyers, helping them towards their first home. The amount, criteria and details for a First Home Owner Grant vary from states and territories, so check with your lender or have a look at the Federal Government’s First Home Owner Grant site for more information.


Having a savings plan to help accumulate your deposit is a good way to show you can meet home loan repayments – also, make sure you’re making regular repayments on credit cards or other credit products you have, to help increase your credit score.



Knowing your maximum borrowing power

Your borrowing power depends on your personal situation, lifestyle, income, expenses, credit score, and other factors. If you want to estimate your borrowing power quickly and easily, try using our borrowing power calculator.


To sum up

  • Know what your price range is, and how much of a deposit you can put down.
  • Be aware there are other costs to consider when buying a home.
  • Your personal circumstances and how your finances are organised can affect how a lender approaches your home loan.
  • If you’re a first-time buyer, government support is available.


Other guides to help

Family Security Guarantee

Family can help you with a deposit. With a Family Security Guarantee*, parents can use their available equity to help you buy a home.

Lenders Mortgage Insurance

For those with deposits less than 20% of the property’s value, Lenders Mortgage Insurance can help you.


Upfront costs of buying a home

Find out more about the potential costs you need to consider when buying a home.


Things you should know

Credit criteria, fees and charges apply. Terms and conditions available on request.

This information has been prepared without taking your objectives, needs and overall financial situation into account. For this reason, you should consider the appropriateness of the information and, if necessary, seek appropriate professional advice.

Conditions, fees and charges apply. These may change or we may introduce new ones in the future. Full details are available on request. Lending criteria apply to approval of credit products. This information does not take your personal objectives, circumstances or needs into account. Consider its appropriateness to these factors before acting on it. Read the disclosure documents for your selected product or service, including the Terms and Conditions or Product Disclosure Statement, before deciding. Target Market Determinations for the products are available. Unless otherwise specified, the products and services described on this website are available only in Australia from © Westpac Banking Corporation ABN 33 007 457 141 AFSL and Australian credit licence 233714.

*The guarantor should consider the risks associated with Parental Guarantee, primarily that if the borrower defaults on their loan, the guarantor is liable to pay up to the maximum of the portion of security they have put forward as a guarantee. Westpac recommends guarantors to obtain independent legal advice.

Offer available on all loans eligible under the Family Security Guarantee, for purchase or refinance of owner occupier or investment property. Note that for investment properties, the borrower must not have ownership of any other properties at the time of application, and for owner occupied properties a maximum of one other property may be owned which does not have sufficient equity to provide a security. For new Family Security Guarantee Home Loan applications received from 23 October 2020. Family Security Guarantee can be provided by parents or legal guardians, siblings, and children. Equity access, owner builder applications, Line of Credit and Bridging Loan products are not eligible under the Family Security Guarantee. Other Exclusions may apply. Not available for the purposes of debt consolidation, owner builder construction, cash out, or addition of a security guarantee to an existing loan. $150k minimum loan size applies. Credit criteria, fees and charges apply. Offer may be varied or withdrawn at any time. Full eligibility criteria on the Family Security Guarantee is available on request.