How Much Deposit Do You Actually Need to Buy a House in 2026?

Ask most Australians how much deposit you need to buy a house and a lot of them will say, very confidently, "20%." Others will say "5% if you are brave" and then vanish before explaining the bit where your bank account gets stress-tested by reality.

The truth in 2026 is a bit less neat. You do not always need a 20% deposit, but you do need enough cash to make the whole purchase work. That means thinking about the deposit, Lenders Mortgage Insurance, upfront buying costs, and whether your repayments still leave enough room for groceries, council rates and the first weird thing the property does after settlement.

If you want to test the numbers as you read, start with the Borrowing Capacity Calculator, compare low-deposit scenarios in the LMI Calculator, and check government charges in the Stamp Duty Calculator.

What the deposit actually does

Your deposit is the portion of the purchase price you are not borrowing from the lender. The bigger the deposit, the smaller the loan, which usually means lower repayments and less risk for the bank.

That risk point matters because once you borrow above 80% of the property value, many standard home loans start to involve Lenders Mortgage Insurance, or LMI. Moneysmart describes LMI as insurance that protects the lender, not you, when the loan-to-value ratio is high. Which is, admittedly, one of finance's more annoying features.

On a $800,000 property, the raw deposit numbers look like this:

• 5% deposit: $40,000
• 10% deposit: $80,000
• 20% deposit: $160,000

That looks simple until you remember the deposit is not the only cash you need.

The bit buyers forget: deposit does not equal total upfront cash

Plenty of first home buyers hit their deposit goal and then discover they are still not ready to buy. That is because the purchase usually comes with extra costs such as:

• stamp duty, unless you qualify for a concession or exemption
• conveyancing or solicitor fees
• building and pest inspections
• loan application, settlement or valuation fees
• moving costs
• a cash buffer for repairs, appliances or life being rude

State-based duties can be significant, although first home buyer concessions may reduce or remove some of that depending on the property value and where you buy. This is exactly why a buyer with a smaller deposit but decent leftover cash can sometimes be in a better position than a buyer who stretched to hit 20% and now has the financial flexibility of a wet biscuit.

Can you buy with a 5% deposit in 2026?

Yes, you can. But there is a very important difference between can and should.

On a standard loan, a 5% deposit usually means a 95% loan-to-value ratio. That generally means:

• higher LMI on many standard loans
• higher monthly repayments because you are borrowing more
• less equity from day one
• less margin for rate rises or surprise costs

There is one major exception. Eligible buyers may be able to use Housing Australia's home buyer support programs, including the Australian Government 5% Deposit Scheme, formerly known as the Home Guarantee Scheme. Programs under that umbrella include the First Home Guarantee and Family Home Guarantee. Under those programs, eligible buyers may be able to purchase with a lower deposit without paying LMI, subject to lender participation, property price caps and scheme rules.

That is a big deal. If you are eligible, a 5% deposit can become much more sensible because you are not adding a chunky LMI premium on top of an already large loan. For eligible single parents or single legal guardians, some pathways can go as low as a 2% deposit.

Why 10% is often the practical sweet spot

The internet loves extremes. Five percent sounds exciting. Twenty percent sounds responsible. Ten percent sounds like the middle child of home buying, quietly doing the work while everyone else gets the attention.

For a lot of Australians, 10% is the most practical target. It can:

• reduce the loan size compared with 5%
• often reduce LMI compared with a 95% loan
• get you into the market sooner than waiting for 20%
• leave more room to keep a proper emergency buffer

If you are currently renting, this matters even more. Waiting an extra year or two for a full 20% deposit may mean paying a lot more in rent while house prices, stamp duty thresholds or borrowing conditions move around underneath you. Sometimes the mathematically perfect deposit target is not the strategically best one.

Why 20% is still the benchmark

Twenty percent remains the classic target for a reason. At 80% LVR or lower, many standard loans avoid LMI. You also start with more equity and a smaller loan balance, which usually means lower repayments and less pressure if rates rise.

That gives 20% some obvious strengths:

• often no LMI on a standard loan
• lower repayments than a 5% or 10% option
• more lender choice in some cases
• more breathing room if property values wobble

The downside is also obvious. It is a massive amount of money. On that same $800,000 home, 20% means $160,000 for the deposit alone, before upfront buying costs. For many households, getting from 10% to 20% is not a quick tidy-up. It is another multi-year campaign.

Affordability matters more than winning the deposit argument

Too many buyers focus only on how to avoid LMI. Fair enough, because paying insurance that protects the lender is not exactly thrilling. But repayment comfort matters more than fee purity.

If buying with 5% leaves you with repayments that are technically approved but emotionally grim, that is not a win. APRA's current guidance sets the minimum interest rate buffer at 3 percentage points above the loan product rate, which means lenders test whether you could handle a higher rate than today's offer. If your own cash flow looks shaky before you even move in, take that seriously.

In plain English, the deposit target should not just get you over the line. It should leave you with a loan you can actually live with.

A simple way to choose your target

Here is the practical framework:

1. Start with the property price range, not a fantasy number that feels grown-up.
2. Check borrowing capacity based on current income, debts and expenses.
3. Model 5%, 10% and 20% deposits, including LMI where relevant.
4. Add stamp duty and buying costs, not just the deposit.
5. Leave a cash buffer after settlement.
6. Stress-test repayments so you are not instantly house-poor.

If one option only works by emptying every account and praying the hot water system respects your effort, it is not the right option.

So how much deposit do you actually need?

If you want the least annoying honest answer:

• 5% can work if you are eligible for a guarantee or you have strong income and solid buffers.
• 10% is often the best balance between getting in sooner and keeping the loan manageable.
• 20% is still the cleanest standard path if reaching it will not take forever or wipe out your emergency cash.

So no, you do not always need 20%. But you do need a deposit strategy that fits your full situation, not just the number your uncle has been repeating since 2009.

Final word

The right deposit is not the biggest one you can barely scrape together. It is the one that gets you approved, gets you settled, and leaves your budget strong enough to handle normal life after the keys land in your hand.

For a lot of buyers in 2026, that means aiming beyond the absolute minimum, but not blindly worshipping 20% either. Run the numbers properly, check scheme eligibility, and think in terms of total buying cost plus monthly comfort. That is where the real answer lives.

Sources checked 23 June 2026: Moneysmart guidance on Lenders Mortgage Insurance, Housing Australia's Australian Government 5% Deposit Scheme factsheet, and APRA's serviceability buffer announcement.