How Much Deposit Do You Really Need to Buy a House in Canberra?

The deposit question is usually the first one people ask about buying a house in Canberra, and it’s also the one that gets the wrongest answer. “20%” is what your parents and the bank’s website will tell you. The truth in 2026, for most Canberra first home buyers, is that the real number is often a lot lower than 20%, and sometimes higher than 5%, depending on how the pieces fit together.

This guide breaks down what you actually need, what counts as a deposit, and four pathways to buying with less than 20%.

The honest answer: your deposit depends on three things

There isn’t one number because there isn’t one set of rules. Your real minimum deposit depends on:

• Which scheme you qualify for. First Home Guarantee, ACT Home Buyer Concession Scheme, regional buyer schemes, each unlocks a different deposit threshold.
• Which lender you go to. Lender policy differs. Some accept 5% with LMI; others want 10% minimum even with LMI; a few will go lower with the right profile.
• What kind of property you’re buying. Lenders treat houses, units, off-the-plan and rural blocks differently. The acceptable deposit can shift by 5% on the same income depending on the property type.

A broker can run your file against twenty-plus lenders and tell you the real minimum for your situation in about a day. A single bank can only tell you their own policy.

Deposit requirements at a glance

The numbers above are minimums. Just because a lender will lend at 5% doesn’t mean it’s always the smart move, there are trade-offs around interest rate, LMI cost, and repayment capacity. The right deposit is rarely the minimum deposit.

Why 20% is the magic number (and what happens below it)

The 20% rule comes from one thing: Lenders Mortgage Insurance. LMI is a one-off insurance premium charged by the lender to protect itself against the risk that you default on the loan. It’s calculated on the loan amount and the loan-to-value ratio (LVR), and on an average Canberra purchase it can range from around $8,000 to over $25,000.

Above 80% LVR (i.e. deposit under 20%), most lenders require LMI. Below 80% LVR (deposit 20% or more), LMI is waived.

That premium doesn’t go away, it’s usually added to your loan, which means you pay interest on it for the life of the mortgage. A $15,000 LMI bill at 6.4% over a 30-year loan term costs roughly $33,000 in total. Worth knowing before you decide whether to chase the 20% or move sooner with less.

→ Related: What Is LMI? And Why It’s Probably Costing You Thousands

Four pathways to buy with less than 20%

If 20% feels years away, and for many Canberra buyers it does, there are four real ways to get into the market sooner.

Pathway 1. First Home Guarantee (5% deposit, no LMI)

The federal First Home Guarantee lets eligible first home buyers purchase a property with just a 5% deposit, with the government guaranteeing the remaining gap so no LMI is required. There are property price caps (which vary by state and city) and income caps (around $125k for singles, $200k for couples, check the current thresholds, they’re revised periodically). Places reset each financial year and tend to run out.

Pathway 2. Standard LMI loan (5–15% deposit)

If you don’t qualify for the First Home Guarantee (too far over the income cap, the property’s above the price cap, or the places have run out), you can still buy with a smaller deposit by paying LMI. Most lenders accept 5–10% with LMI for first home buyers; the LMI cost is typically added to the loan.

Pathway 3. Family guarantor loan (sometimes 0%)

If a parent or close family member has substantial equity in their own home, they can offer a portion of that equity as security on your loan, meaning you can sometimes buy with little or no cash deposit and still avoid LMI. It’s a real commitment for the guarantor (their property is on the line), so the conversation matters before the paperwork does.

Pathway 4. Stamp duty schemes (preserve deposit instead)

Schemes like the ACT Home Buyer Concession Scheme (HBCS) don’t reduce your deposit directly, they wipe out or reduce stamp duty for eligible buyers, which means the cash you’d have spent on stamp duty stays in your deposit. For a typical Canberra purchase, that’s often $15,000–$25,000 of preserved cash. Combined with LMI or the First Home Guarantee, it’s frequently the single biggest dollar lever.

→ Related: The ACT Home Buyer Concession Scheme Explained

What counts as a deposit (and what’s “genuine savings”)

Lenders care not just how much you have, but where it came from. Most require a portion of your deposit to be “genuine savings”, money saved over time, demonstrated by 3+ months of banking history.

What counts:

• Money saved in your own account for 3+ months
• Term deposits or shares held for 3+ months

What usually doesn’t:

• A cash gift from family (counts as deposit, but not genuine savings)
• A recent lump sum (tax refund, bonus, inheritance)
• Rent paid, though some lenders accept 12 months of consistent rent as a substitute

A gifted deposit works if the rest shows genuine savings. A 100% gifted deposit narrows your lender options sharply.

A Canberra dollar example

For a $720,000 home in Canberra, here’s how the deposit picture might look across pathways for an eligible first home buyer:

• 20% deposit, no scheme: $144,000 deposit + ~$19,000 ACT stamp duty + ~$3,000 other costs = ~$166,000 cash needed
• First Home Guarantee (5%): $36,000 deposit + $0 LMI + scheme-eligible stamp duty discount + ~$3,000 costs = ~$40,000–$60,000 cash needed (depending on HBCS eligibility)
• Standard 10% + LMI: $72,000 deposit + ~$14,000 LMI added to loan + ~$19,000 ACT stamp duty + ~$3,000 costs = ~$94,000 cash needed

Stamp duty figures based on current ACT conveyance rates, use the ACT Revenue Office stamp duty calculator for your exact property value. LMI figures vary by lender.

The difference between the cash-needed numbers is years of saving for most households. The “right” pathway depends on whether you qualify for the schemes, how the LMI cost stacks against opportunity cost, and your income trajectory.

The costs people forget to budget

Your deposit isn’t the only money you need at settlement. Budget for:

• Stamp duty (or scheme exemption, if eligible)
• Conveyancing or solicitor fees (~$1,200–$1,800 in the ACT)
• Building and pest inspection (~$500–$700)
• Loan establishment and valuation fees (~$0–$1,000)
• LMI if your deposit is under 20% and no scheme covers you
• Moving, building and contents insurance

Rule of thumb: budget an extra 3–5% of the purchase price on top of the deposit. On a $700,000 property, that’s $21,000–$35,000 in additional cash needed.

What to do first (it’s not deposit-saving)

Here’s the order that actually works:

1. Find out your real borrowing capacity. Until you know what you can borrow, the deposit number is hypothetical.
2. Identify which schemes you qualify for. This changes the deposit math significantly.
3. Then work out the deposit target. Based on the property type, scheme eligibility, and lender mix that fits.

Most people do it in the opposite order, pick a deposit target, then start saving, and end up either over-saving (delaying the purchase by 12+ months unnecessarily) or under-saving (because the real number was higher than they assumed).

If you want the personalised version of this, the exact deposit you need for the home you actually want, book a 15-minute call with Harbir. We’ll run your borrowing capacity against the current scheme thresholds and tell you the real number for your situation.

Book a 15-min broker call →

Or call 0461 117 777 | Email info@creditstar.com

→ See also: The 2026 First Home Buyer in Canberra Guide (the full step-by-step)

Frequently Asked Questions

Q1. How much deposit do you need to buy a house in Australia?
Ans. Most homes need a 5–20% deposit. With the First Home Guarantee, eligible first home buyers can purchase with just 5% and no LMI. Without a scheme, 20% is the threshold to avoid LMI.

Q2. Can you buy a house with a 5% deposit?
Ans. Yes. Either through the First Home Guarantee (no LMI, scheme-eligible) or via a standard LMI loan with a lender who accepts 5% deposits from first home buyers.

Q3. Is a 20% deposit really necessary?
Ans. No, 20% is the threshold above which LMI is waived, but many first home buyers buy with less and accept the LMI cost or use a scheme. The right deposit depends on your circumstances.

Q4. What is “genuine savings” for a home loan?
Ans. Lenders typically require a portion of your deposit to be genuine savings, money saved in your own account over at least 3 months. A gift or recent windfall doesn’t usually count as genuine savings, even though it counts as deposit.

Q5. Can I use a gift from my parents as my deposit?
Ans. Yes. A gifted deposit is acceptable to most lenders, but you’ll usually need a signed gift letter confirming the funds aren’t a loan, and some lenders require part of your deposit to still be genuine savings.

Q6. How long does it take to save a deposit?
Ans. For a Canberra first home buyer aiming for 10% on a $700k home, $70k typically takes 3–5 years of disciplined saving. Schemes can shorten this dramatically by reducing the deposit needed.

Q7. What deposit do I need to avoid LMI?
Ans. 20% of the property value, in most cases, or a deposit under 20% paired with a scheme like the First Home Guarantee, or a family guarantor loan, which all waive LMI.

Q8. Can my parents go guarantor instead of giving me a deposit?
Ans. Yes. A family guarantor loan uses equity in a parent’s property as additional security, often allowing you to buy with little or no cash deposit and avoid LMI. It’s a significant commitment from the guarantor.

Q9. Does the deposit include stamp duty?
Ans. No, the deposit and stamp duty are separate. Stamp duty is paid at settlement on top of your deposit, unless you qualify for an exemption like the ACT Home Buyer Concession Scheme.

Q10. What happens if I don’t have enough deposit?
Ans. Options include saving longer, asking for a family gift or guarantor, applying for the First Home Guarantee scheme, or buying a less expensive property. A broker can map the realistic pathways for your situation.