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How much deposit do you really need?

Why 20% isn't the only number, what lenders mortgage insurance costs, and when a 5% deposit can make sense.

Anthony Nocon
Anthony Nocon
Founder and Mortgage Broker, Financeo
Published
21 October 2026
Last revised
11 November 2026
Reading time
6 min read
How much deposit do you really need?
TL;DR In a nutshell
✓20% deposit: avoids lenders mortgage insurance (LMI) with most lenders.
✓Under 20%: possible, but LMI is usually added to the loan.
✓5% Deposit Scheme: eligible first home buyers can buy with 5% and no LMI.
✓Extra costs: budget for legal fees, inspections and moving on top of the deposit.

Your deposit options

The deposit you need depends on the loan-to-value ratio (LVR) you borrow at. Here's what each option looks like on an $800,000 home.

Deposit on an $800,000 home
20% deposit, no LMI$160,000
10% deposit, plus LMI$80,000
5% with the 5% Deposit Scheme$40,000

LMI varies by lender, loan size and deposit. Figures are illustrative.

What lenders mortgage insurance is

LMI protects the lender, not you, if you borrow more than 80% of the property's value. It's a one-off cost, usually added to your loan, and it rises steeply as your deposit gets smaller.

Some professions, such as doctors, lawyers and accountants, can qualify for LMI waivers with certain lenders.

Loan-to-value ratio and LMI
No LMI
LMI applies
Higher LMI
Up to 80%80% to 90%90% to 95%

The costs on top of your deposit

Your deposit isn't the only cash you need. Plan for conveyancing, building and pest inspections, loan fees and moving costs. Stamp duty may also apply if you aren't eligible for an exemption.

Anthony Nocon

"The right deposit isn't always the biggest one. Sometimes buying sooner with 5% beats waiting years to save 20% while prices move."

Anthony Nocon, Financeo

Ways to get there sooner

Government schemes, a guarantor, or the First Home Super Saver Scheme can all help close the gap.

01
Forgetting genuine savings
Some lenders want to see a history of regular saving, not just a lump sum.
02
Draining every dollar
Keep a buffer for costs after settlement.
03
Ignoring the schemes
Many buyers don't check if they qualify for a 5% deposit option.

Quick self-check

Tick what applies to you. It's a rough guide, not an assessment.

Tick the boxes above to see where you stand.

Frequently asked questions

Single parents may qualify for a 2% deposit under the Family Home Guarantee, and a guarantor can sometimes remove the need for a deposit.

This article is general information only and doesn't take your circumstances into account. Lending rules, rates and thresholds change, so check current details or speak with us before acting.

Anthony Nocon
About the author
Anthony Nocon

Founder and Director of Financeo. More than a decade in lending, including commercial, business, property and private banking roles at Commonwealth Bank.

More about Anthony →

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Anthony Nocon

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Every situation is different. Anthony can tell you what applies to yours in a free consult.

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How much deposit do you really need?

Why 20% isn't the only number, what lenders mortgage insurance costs, and when a 5% deposit can make sense.

Anthony Nocon
Anthony Nocon
Founder and Mortgage Broker, Financeo
Published
21 October 2026
Last revised
11 November 2026
Reading time
6 min read
How much deposit do you really need?
TL;DR In a nutshell
✓20% deposit: avoids lenders mortgage insurance (LMI) with most lenders.
✓Under 20%: possible, but LMI is usually added to the loan.
✓5% Deposit Scheme: eligible first home buyers can buy with 5% and no LMI.
✓Extra costs: budget for legal fees, inspections and moving on top of the deposit.

Your deposit options

The deposit you need depends on the loan-to-value ratio (LVR) you borrow at. Here's what each option looks like on an $800,000 home.

Deposit on an $800,000 home
20% deposit, no LMI$160,000
10% deposit, plus LMI$80,000
5% with the 5% Deposit Scheme$40,000

LMI varies by lender, loan size and deposit. Figures are illustrative.

What lenders mortgage insurance is

LMI protects the lender, not you, if you borrow more than 80% of the property's value. It's a one-off cost, usually added to your loan, and it rises steeply as your deposit gets smaller.

Some professions, such as doctors, lawyers and accountants, can qualify for LMI waivers with certain lenders.

Loan-to-value ratio and LMI
No LMI
LMI applies
Higher LMI
Up to 80%80% to 90%90% to 95%

The costs on top of your deposit

Your deposit isn't the only cash you need. Plan for conveyancing, building and pest inspections, loan fees and moving costs. Stamp duty may also apply if you aren't eligible for an exemption.

Anthony Nocon

"The right deposit isn't always the biggest one. Sometimes buying sooner with 5% beats waiting years to save 20% while prices move."

Anthony Nocon, Financeo

Ways to get there sooner

Government schemes, a guarantor, or the First Home Super Saver Scheme can all help close the gap.

01
Forgetting genuine savings
Some lenders want to see a history of regular saving, not just a lump sum.
02
Draining every dollar
Keep a buffer for costs after settlement.
03
Ignoring the schemes
Many buyers don't check if they qualify for a 5% deposit option.

Quick self-check

Tick what applies to you. It's a rough guide, not an assessment.

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Frequently asked questions

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This article is general information only and doesn't take your circumstances into account. {{ discText }}

Anthony Nocon
About the author
Anthony Nocon

Founder and Director of Financeo. More than a decade in lending, including commercial, business, property and private banking roles at Commonwealth Bank.

More about Anthony →

Keep reading

All insights
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Anthony Nocon

Rather talk it through?

Every situation is different. Anthony can tell you what applies to yours in a free consult.

Book a Consult
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