Can You Buy a House on One Income in New Zealand?

Yes, you can buy a house on one income in New Zealand. It can be harder in higher-priced centres like Auckland, Wellington and Christchurch, but it isn't impossible.

If you're the only income in your household, it's easy to look at property prices, run a few quick numbers and quietly decide that buying a home is for people with a partner.

I don't want you to rule yourself out before you've seen what the numbers actually look like.

I believe people who take small, consistent steps are the ones who end up owning their own home. That's true whether you're buying with a partner or on your own.

Twenty years ago, I was a first-home buyer sitting across from an adviser who didn't explain the process properly. That experience is part of why I take the time to explain things clearly now.

One of the questions I hear from prospective first-home buyers is whether they can realistically qualify for a mortgage without a partner or second income.

My answer is that it depends on your individual financial position.

Your income, deposit, existing debts, living expenses and ability to save all influence how much a bank may be prepared to lend you.

Different lenders can also assess the same application differently.

I've helped single-income buyers purchase homes. That includes a recent client whose ability to include boarder income made a substantial difference to his borrowing capacity.

I'll share that example below.

Can You Get a Mortgage on One Income in NZ as a First-Home Buyer?

Yes. You can qualify for a mortgage in New Zealand with just one income.

Banks don't apply a fundamentally different set of lending principles because you're buying alone.

They still need to establish three things:

• You have sufficient income

• You have an acceptable deposit

• You can comfortably meet your mortgage repayments and other financial commitments

The challenge is that you generally have only one income supporting the mortgage.

That can make buying in more expensive areas, such as Auckland, Wellington or Christchurch, more difficult.

However, a single buyer may also be looking for a different type of property from a couple or family.

The important thing is not whether you have one income or two. It's whether your financial position supports the property you want to buy.

How Much Can You Borrow on One Income in NZ? The Five Factors I Assess

There's no single borrowing amount that applies to everyone buying on one income.

When I assess a first-home buyer's position, I look closely at five factors.

1. Your gross income: how banks treat salary, overtime and commission

Your income is one of the most important factors in how much you may be able to borrow.

Banks consider your earnings, and whether those earnings are reliable and sustainable.

A regular salary is generally straightforward to assess.

Overtime, commission, bonuses and other variable income may also count.

The lender will need appropriate evidence to establish how much of that income it can recognise.

2. Your existing debts: why debt weighs more on a single income

Existing debt can have a proportionally greater impact when only one income supports the mortgage.

Car loans, personal loans, credit cards and buy now, pay later commitments can all affect your borrowing capacity.

Even if you owe very little on a credit card, its available limit may still affect how a lender assesses your commitments.

Having debt doesn't automatically prevent you from getting a mortgage.

It means your debt needs to be considered alongside your income, deposit and other commitments.

If you're unsure whether to reduce debt or keep saving, read my guide on whether to pay off debt or save for a house deposit first .

3. Your living expenses: what banks count

Banks assess your regular living costs to work out how much income is left for mortgage repayments.

These can include:

• Groceries

• Transport

• Insurance

• Utilities

• Other ongoing commitments

Your household circumstances, including whether you have dependants, also influence the assessment.

4. Your deposit: how it shapes your lender options

Your deposit influences both the purchase price you can consider and which lenders may be prepared to help.

A larger deposit can open up more lending options.

But you don't necessarily need 20% to buy your first home.

I cover the lower-deposit options further down.

5. Your ability to save: why demonstrated savings matter

I place considerable emphasis on demonstrated savings.

Saving consistently while meeting your existing commitments helps show you're financially prepared for the extra costs of owning a home.

For a more detailed explanation, read How Much Can I Borrow for a Home Loan in New Zealand? .

Is It Harder to Save a Deposit on One Income Than as a Couple?

In my experience, building a sufficient deposit is often one of the biggest challenges for single-income buyers.

When two people buy together, two incomes can contribute towards the savings.

A single buyer generally needs to build the deposit from one income.

That can take longer, particularly when you're also paying rent and meeting everyday living expenses.

There's another side to this.

A single person may not need a large family home with multiple bedrooms.

Depending on your preferences and circumstances, a smaller property may suit you.

As a mortgage adviser, my role isn't to tell you what type of property to buy.

My role is to help you establish two figures:

• Your borrowing capacity

• Your available deposit

Those two figures help determine which properties and locations may be financially achievable.

How Much Deposit Do You Need to Buy a House on One Income in NZ?

You don't always need 20%. Depending on your circumstances and the lender, buying with a smaller deposit may be possible.

Here is the deposit needed for a $600,000 property:

• 5% deposit: $30,000

• 10% deposit: $60,000

• 20% deposit: $120,000

The gap between saving $30,000 and $120,000 is substantial, especially when you're relying on one income.

A smaller deposit doesn't automatically mean a lender will approve the application.

You still need to show you can afford the mortgage, and the lender must be satisfied with the property.

Lower-deposit lending can also involve additional costs or interest rate margins.

Read my guide to how much deposit you need to buy a house in New Zealand for a fuller explanation.

Can You Use KiwiSaver for a First-Home Deposit on One Income?

Yes, provided you meet the KiwiSaver first-home withdrawal requirements.

If you've been a KiwiSaver member for at least three years, you may be eligible to withdraw most of your savings towards your first home.

You must leave at least $1,000 in your KiwiSaver account.

When I assess a single-income buyer, I look at every potential source of deposit:

• Personal savings

• Eligible KiwiSaver funds

• Investments that may be available for the purchase

• Potential family gifts

I don't automatically recommend that someone spend several more years saving.

I first want to establish how much deposit they could already have available.

You can learn more in my KiwiSaver first-home withdrawal guide .

Can a Single-Income Buyer Use the First Home Loan to Buy With a 5% Deposit?

It may be an option if you're an eligible buyer.

Under the First Home Loan scheme, participating lenders can provide qualifying first-home buyers with a mortgage requiring a minimum 5% deposit.

Kāinga Ora underwrites the scheme, but the lender still needs to approve your application.

As at October 2026, the gross income limits are based on income earned over the previous 12 months:

• Single buyer without dependants: $95,000 or less

• Single buyer with dependants: $150,000 or less

• Two or more buyers: $150,000 or less combined

Other eligibility requirements apply, including residency, property ownership and lender affordability criteria.

The scheme also has a lenders mortgage insurance premium.

• Premium: 1.2% of the loan amount

It can be paid upfront or added to the mortgage.

The First Home Loan isn't the only route to buying with less than a 20% deposit.

Some lenders may consider low-deposit applications outside the scheme, subject to their lending policies.

Read my First Home Loan NZ: How to Buy With a 5% Deposit article for more information.

How Much Can Boarder Income Increase Your Mortgage Borrowing Capacity in NZ?

In some circumstances, boarder income can make a substantial difference to a single-income buyer's borrowing capacity.

I believe this option deserves more attention than it gets.

If you're buying a property with a spare bedroom and plan to have a boarder living with you, some banks may include an acceptable amount of that income when assessing your application.

That extra income can help support a larger mortgage.

In my experience, including boarder income has sometimes increased a client's potential borrowing capacity by hundreds of thousands of dollars.

However, the amount a bank will recognise depends on its lending policy and your circumstances.

Most banks limit the boarder income they'll include in their affordability calculations.

There is also a lender that doesn't impose a fixed limit, provided the proposed boarder income is reasonable and sustainable.

That's a good example of why choosing the right lender can make such a difference.

It doesn't mean every applicant will qualify for a substantially larger mortgage just by planning to take in a boarder.

The bank must still be satisfied with three things:

• The proposed arrangement

• The income being relied upon

• The overall affordability of the loan

There's one more thing I want you to think about.

Just because a bank is prepared to lend you more doesn't mean you should borrow the maximum amount.

Ask yourself whether you could still manage your financial commitments if the room was vacant or the boarder stopped paying.

That question matters as much as the bank's answer.

Real Client Example: How Boarder Income Helped a Single Buyer Purchase in His Preferred Suburb

I recently helped a single-income first-home buyer who wanted to buy in a particular suburb.

The challenge was establishing enough borrowing capacity to make that purchase possible.

A key part of the solution was the income he could receive from having a boarder.

Rather than approaching a lender that applied a fixed limit to acceptable boarder income, I deliberately selected a bank whose policy allowed it to consider a higher amount, provided the income was reasonable and sustainable.

That approach made a significant difference to the mortgage assessment.

The additional boarder income helped increase his borrowing capacity enough for him to buy in the suburb he wanted.

He settled on his property in September 2026.

Looking ahead, the boarder income could also give him the opportunity to make additional mortgage repayments, reduce his loan balance faster and build equity.

His longer-term ambition is to potentially buy an investment property.

Whether that becomes achievable will depend on his future financial position, property equity and lending requirements.

For me, this example shows an important point.

Two lenders can assess the same borrower differently, because their lending policies aren't identical.

Understanding those differences can be particularly valuable when you're buying on one income.

Does a Bank Assess a Single-Income Buyer Differently From a Couple?

The underlying lending principles are the same.

Whether you're buying alone or with someone else, a bank needs to be satisfied that you can afford the mortgage.

The lender will consider:

• Your income

• Your debts

• Your expenses

• Your deposit

• Your credit history

• The property being purchased

The main difference is that a couple may have two incomes supporting the application.

For a single buyer, existing debt can therefore have a proportionally greater impact.

But that doesn't mean a single buyer is automatically a higher-risk borrower, or that their application should be dismissed.

A single person with a strong income, manageable expenses, a suitable deposit and minimal debt may be in a better financial position than a couple with substantial financial commitments.

It's the overall financial position that matters, not the number of people applying.

Why Demonstrated Savings Matter When Applying for a Mortgage

One of the things I look for when assessing a first-home buyer is their ability to save consistently.

Imagine you're currently paying $550 per week in rent.

Your proposed mortgage repayments and other homeownership costs may be significantly higher.

If you've regularly been saving on top of your rent, that can help show you can manage the increase.

This is sometimes called your ability to step up from renting to homeownership.

Banks want confidence that you'll be able to meet your repayments once you've bought the property.

Demonstrated savings can help support that assessment.

This applies equally to single-income and multiple-income buyers.

Owning a home also comes with costs beyond mortgage repayments:

• Council rates

• Insurance

• Ongoing maintenance

It's important to allow for those costs, rather than focusing only on what the bank might approve.

What Types of Property Can You Buy on One Income?

Your deposit and borrowing capacity will help determine the price range you can realistically consider.

From there, the choice of property is yours.

You may decide to look at a standalone house, townhouse, unit or apartment, depending on your priorities and what's available in your budget.

However, lenders can have different requirements depending on the property type.

For example, banks are generally more cautious about lending against apartments when the buyer has less than a 20% deposit, although exceptions do exist.

Other property characteristics can also affect a lender's willingness to approve a mortgage.

That's why it's important to understand the lending requirements before you commit to a particular property.

If you're preparing to buy, my guide on how to make an offer on a house in New Zealand explains some of the important steps involved.

Should You Wait for a Partner or a Higher Income Before Buying a House in NZ?

Not necessarily.

One of the biggest mistakes a prospective first-home buyer can make is assuming that buying isn't possible without first finding out where they actually stand.

You may discover that you already have enough income and deposit to consider buying.

Or you may find that buying isn't achievable right now.

Either outcome gives you valuable information.

If you're not ready yet, you can work towards a clearly defined goal, rather than hoping your financial position improves over time.

Your next steps might include:

• Reducing consumer debt

• Increasing your savings

• Building your deposit

• Investigating whether boarder income could form part of a future application

The important thing is having a plan based on your actual circumstances.

Why I Encourage Single-Income Buyers to Speak to a Mortgage Adviser Early

I encourage first-home buyers to establish their borrowing capacity and deposit position even if they're not planning to buy immediately.

You don't need to have everything perfectly organised before you start that conversation.

My approach is to establish where you stand financially and explain what's realistically achievable.

If you're in a position to buy, we can discuss the available lending options and what the next steps might look like.

If you're not ready, I'll explain why and what you may need to do to improve your position.

I don't believe in sugarcoating mortgage advice.

Telling someone what they want to hear doesn't help them make sound financial decisions.

Equally, I don't believe in dismissing someone's chances of buying a home simply because they have one income.

My goal is that you don't leave our conversation empty-handed.

You should come away with a clearer understanding of your financial position and the steps you can take towards buying your first home.

Frequently Asked Questions About Buying a House on One Income in NZ

Can a single person get a mortgage in New Zealand?

Yes. A single person can qualify for a mortgage in New Zealand, provided they meet the lender's affordability, deposit and other lending requirements. Banks assess your overall financial position rather than requiring two incomes.

Is it harder to buy a house on one income in NZ?

It can be more challenging, because you're relying on one income to save a deposit and support the mortgage. However, your income, debts, deposit, living expenses and any potential additional income all influence what's achievable.

How much deposit does a single person need to buy a house in NZ?

The deposit required depends on the lender and your circumstances. A 20% deposit generally provides more options, but some buyers may qualify with a 5% or 10% deposit. A First Home Loan may be available to eligible buyers with at least 5%.

Can I use boarder income to qualify for a mortgage in NZ?

Potentially, yes. Some New Zealand lenders will recognise acceptable boarder income when assessing mortgage affordability. The amount they'll include varies between lenders, and the income must meet their requirements.

Can I buy a house alone using KiwiSaver?

Yes. If you meet the KiwiSaver first-home withdrawal requirements, you may be able to use eligible savings towards your deposit. Generally, you must have been a member for at least three years and leave $1,000 in your account.

Should I get mortgage pre-approval before looking at houses?

Understanding your borrowing capacity before you seriously search for a property is a sensible starting point. Where available and appropriate, mortgage pre-approval can give you greater clarity about how much a lender may be prepared to advance, subject to its conditions and approval of the property.

Final Thoughts: Buying on One Income Is Possible. Start by Understanding Your Numbers

Buying a house on one income in New Zealand isn't always easy, especially where property prices are high.

But it certainly isn't impossible.

I've seen how the right lending approach, a suitable deposit and the ability to include additional income can change what's achievable for a first-home buyer.

The most important first step is to understand your current financial position.

Don't assume you need a partner, a 20% deposit or several more years of saving before you explore your options.

Find out where you stand today.

And if you're not quite ready, work out what needs to change so you can head towards buying with a clear plan.

I believe that people who take the time to find out where they actually stand, rather than assuming the worst, are the ones who make genuinely confident decisions. That's who I'm here for.

Find Out How Ready You Are to Buy Your First Home

Not sure whether you could qualify for a mortgage on one income?

Start with Lookahead's free 3-Minute Mortgage Quiz .

It's a safe place to start, with no judgment and no pressure. It's a simple first step towards understanding where you stand and what to do next.

Disclaimer: This article provides general information only and does not constitute personalised financial advice. Mortgage eligibility, lender policies and government scheme criteria depend on individual circumstances and may change. Seek advice relevant to your circumstances before making financial commitments.