Which New Zealand lenders are best for your situation?

As a self-employed contractor who has recently bought your first home with roughly a 20% deposit, I’d focus on lenders that combine flexible income assessment, good ongoing mortgage service, and options to manage repayments when your income fluctuates.

The key distinction is that the lender willing to approve your mortgage isn't necessarily the lender that will look after you best over the next five to ten years.

For your situation, I'd compare lenders on four things:

• How they assess contractor income: whether they understand variable earnings, contract renewals, gaps between projects and business expenses.
• How they handle changes in circumstances: whether you can restructure repayments, change your fixed-rate term or discuss temporary relief if work dries up.
• How competitive the ongoing deal is: interest rates, cashback offers, fees and the cost of refinancing later.
• How easy they are to deal with: access to a helpful mortgage specialist, responsive service and clear communication when something goes wrong.

A 20% deposit is a useful starting point, but your income pattern and the terms of your existing loan may matter more now that you've completed the purchase.

My shortlist of New Zealand lenders

I'd start with these lenders rather than assuming one bank is best for every contractor. The distinctions below are based on published mortgage features and independent customer or product research, not a claim that any lender has a universally superior contractor policy.

1. BNZ

Strong starting point

Why consider it: BNZ won Canstar's 2026 Home Loans Bank of the Year and Most Satisfied Customers Home Loans awards. Its TotalMoney offset mortgage can link up to 50 accounts, which may be useful if you maintain a substantial cash buffer between contracts. Home Loans Star Ratings and Awards New ZealandBest home loans: Canstar's Home Loan Awards

Ask about: Whether an offset structure suits your savings, what flexibility you have with extra repayments, and how its lending team would assess your contractor income.

Best fit to investigate: customer experience and making cash reserves work harder.

2. ASB

Why consider it: ASB received Canstar's 2026 Outstanding Value awards for residential fixed-rate mortgages. Its application process, customer support and loan features are worth comparing if you want predictable repayments without sacrificing service. Home Loans Star Ratings and Awards New ZealandBest home loans: Canstar's Home Loan Awards

Ask about: How it treats business expenses and irregular contract income, and whether you can make additional repayments without significant charges.

Best fit to investigate: a conventional fixed-rate mortgage with competitive overall value.

3. Kiwibank

Why consider it: Kiwibank offers ways to combine fixed, variable, offset and revolving-credit portions of a home loan. That could help you separate predictable mortgage repayments from a more flexible cash reserve, depending on your eligibility and the cost of each facility. Fixed rate home loan | Home loansHome Loans Star Ratings and Awards New Zealand

Ask about: Whether you can structure the loan so that surplus money reduces interest while you retain access to cash during quieter work periods.

Best fit to investigate: repayment flexibility and managing uneven cash flow.

4. Westpac

Why consider it: Westpac received Canstar's 2026 Outstanding Value Residential Lender award, with competitive value across its residential mortgage range. It's a worthwhile comparison if your priority is a good long-term deal, not just the first interest rate offered. Home Loans Star Ratings and Awards New ZealandBest home loans: Canstar's Home Loan Awards

Ask about: Your personalised rate, cashback and clawback terms, and how easy it is to change your loan structure at refixing.

Best fit to investigate: overall mortgage value and fixed-rate options.

5. ANZ

Why consider it: ANZ is another major lender worth including in a broker's comparison. A May 2026 survey of mortgage advisers placed ANZ first among the major banks for overall lender performance, considering factors including credit flexibility, assessment support, turnaround and post-settlement service. That is adviser feedback, not a guarantee of better treatment for every borrower. ANZ and non-banks fare well in mortgage broker survey

Ask about: Whether its credit team can assess your actual contracting history rather than relying too heavily on a single year's taxable profit.

Best fit to investigate: a second opinion on income assessment and lender service.

These are a shortlist, not a definitive ranking. Canstar's awards measure different things: customer satisfaction reflects borrowers' experiences, while value awards assess mortgage pricing and features. Neither directly establishes which lender has the most generous policy for a self-employed contractor. Home Loans Star Ratings and Awards New ZealandANZ and non-banks fare well in mortgage broker survey

What matters most for a contractor with variable income

I'd prioritise these mortgage features over a small difference in advertised interest rates.

Feature	Why it matters to you
Offset mortgage	Savings can reduce interest while remaining accessible, subject to the account rules.
Extra repayments	You can pay down more principal during strong earning months, if your loan permits it without a fee.
Split loan	Keep most of your mortgage on a fixed rate and a smaller portion flexible.
A good cash buffer	Helps cover mortgage payments, tax and living expenses during gaps between contracts.
Helpful hardship team	Important if a client cancels work or an unexpected gap in income occurs.

The Reserve Bank distinguishes between the income you actually earn and the income a bank is prepared to count in its servicing assessment. That is why two lenders may view the same contractor's finances differently. Residential mortgage borrower gross income (BGI) (C41) - Reserve Bank of New ZealandPreparing for a home loan appointment

Questions I'd ask before choosing or switching

1. How will you assess my income? Will you consider recent contracts, recurring clients, current invoices and historical earnings alongside annual accounts?
2. Can I make extra repayments? What are the limits on fixed-rate loans, and what fees apply if I exceed them?
3. Can I access an offset or revolving-credit facility? What interest rate and account fees apply, and how much discipline does the facility require?
4. What happens if my income drops for two or three months? Which repayment changes could I request, and what would they cost over the life of the loan?
5. What is the complete cost of switching? Include cashback repayment clauses, legal costs, break fees on fixed loans and any new lending conditions.

New Zealand's Consumer Protection guidance recommends comparing lenders and understanding the costs of changing loan structures. It also advises contacting your lender early if you anticipate difficulty with repayments. Mortgages and home loansHardship and financial difficulty

Because you've already bought the home, I'd check your current mortgage's refixing date and terms before considering a refinance. A switch isn't automatically worthwhile simply because another bank offers a lower headline rate.

My practical recommendation

Start by comparing BNZ, ASB and Kiwibank, then get a quote from Westpac or ANZ as a check on pricing and service. I'd also speak to a registered mortgage adviser who can explain which lenders they cover, how they're paid and whether they charge you a fee. A broker may be especially useful if you want a lender to review your contractor income rather than simply compare rates. Mortgages and home loansMortgage advice

One important caveat: if you have already settled your mortgage, changing lenders can mean a fresh affordability assessment. Don't assume a different bank will accept the same income calculation as your existing lender.

One question that would help me narrow this down

Who is your current mortgage with, and is your income structured as a sole trader, a company paying you a salary, or contractor income paid directly to you?

That would help me distinguish between lenders worth approaching for better ongoing customer service and those worth investigating if flexible income assessment is your bigger concern.

For your situation in Auckland, I’d focus on lenders that understand self-employed income, are practical when earnings fluctuate, and treat you well after settlement — not just the ones advertising the lowest mortgage rate.

Having bought your first home on your own with roughly a 20% deposit puts you in a useful position: you may be able to access standard owner-occupier lending without a low-equity margin, depending on the lender’s valuation and lending terms. The key question is how well a lender assesses your contracting income and what happens if your earnings dip, you want to make extra repayments, or you need to restructure your loan later.

There are two separate things to assess: who is most likely to understand your income, and who provides the best ongoing customer service. A lender can be good at one without being the best at the other.

The lenders I’d put on your shortlist

These are the lenders I’d compare first, based on recent New Zealand mortgage awards, customer feedback and their published lending processes. This is a shortlist to investigate, rather than a guarantee that any lender will assess your particular contracting income favourably.

1. BNZ

Strong all-round starting point

BNZ won Canstar's 2026 Bank of the Year – Home Loans award and its Most Satisfied Customers – Home Loans award. Canstar highlighted the application process and extra repayment options. BNZ also offers TotalMoney, an offset-style floating mortgage that can help if you build up cash reserves between contracting jobs. Home Loans Star Ratings and Awards New ZealandBNZ Home Loans - Review, Compare & Save

Why consider it: A strong combination of mortgage flexibility and customer feedback.

Ask specifically: How will BNZ assess your income if your latest year is stronger or weaker than the previous one?

2. ASB

ASB is worth comparing for its established home-loan offering and the strength of its fixed-rate products. Canstar recognised ASB for Outstanding Value in residential fixed home loans in 2026 and noted its performance in the application and support processes. Home Loans Star Ratings and Awards New ZealandOutstanding Value Home Loans 2026

Why consider it: A useful benchmark for a conventional owner-occupied mortgage, particularly if you want predictable repayments through fixed-rate periods.

Ask specifically: Can it assess your contracting income using your business financial statements and accountant's supporting evidence, rather than relying on a single recent income figure?

3. Kiwibank

Kiwibank is a sensible third quote if you value a New Zealand-owned bank and want to compare pricing and service against the larger banks. It featured in Canstar's 2026 home-loan customer-satisfaction assessment. Home Loans Star Ratings and Awards New ZealandPersonal Banking Awards and Ratings New Zealand

Why consider it: It gives you another major lender's view of your application and another opportunity to negotiate your overall package.

Ask specifically: How much weight will the bank give to recurring contracts, the length of your contracting history and the cash reserves you retain after paying your mortgage?

4. The Co-operative Bank

The Co-operative Bank has a noteworthy customer-service track record: it won Consumer NZ's overall banking satisfaction award in 2025. In Canstar's 2026 mortgage awards, it also received Outstanding Value recognition for floating-rate and line-of-credit home loans. Smaller banks pack a punch: Consumer's best and worst banksOutstanding Value Home Loans 2026

Why consider it: Worth exploring if personal service and access to flexible lending matter as much as the headline fixed rate.

Ask specifically: Does its current self-employed lending policy fit your business structure, and what are the conditions and costs of any flexible repayment facility?

5. ANZ

ANZ is worth including because it has a large home-loan operation and publishes clear guidance on the documents it needs from self-employed applicants. It says it may request financial statements, preferably supplied through your accountant. How to apply for a Home LoanANZ and non-banks fare well in mortgage broker survey

Why consider it: A useful comparison for how a major lender handles your particular contracting history and overall financial position.

Ask specifically: Can an experienced lending specialist explain how ANZ calculates the income it will use for servicing, including any adjustments to business income?

One important qualification: the latest published surveys do not agree on a universal winner. Canstar's 2026 mortgage survey favoured BNZ, while Consumer NZ's 2026 overall banking survey found that no bank met its threshold for a People’s Choice award. These measure different things, so I would treat awards as useful evidence, not a guarantee of your personal experience. Home Loans Star Ratings and Awards New ZealandNo bank good enough to win People’s Choice Award in 2026

What matters most for a contractor with variable income

The biggest difference between lenders may be how they interpret your income, rather than their advertised interest rates.

• Income averaging: Will they use an average of your last two financial years, the latest year, or another measure? Ask how they handle a year with unusually high or low earnings.
• Contract continuity: Do they consider the length of your contracting history, repeat clients, signed future contracts and typical hours?
• Business expenses: If you operate through a company, ask how they calculate your personal income from company accounts, salary, drawings and retained profits.
• Cash reserves: Will they consider savings held as a buffer for quiet periods? Keeping a reserve can also help you manage repayments, even if the lender doesn't count it as income.
• Ongoing flexibility: Can you make extra repayments without penalties, use an offset or revolving-credit facility, or split the mortgage into different loan portions?

Mainstream lenders commonly request accountant-prepared financial statements from self-employed borrowers. For example, BNZ asks for the last two annual financial statements, while ASB asks for up-to-date accountant-prepared financial statements. The precise assessment criteria still need to be confirmed with each lender. Preparing for a home loan appointmentHome loan application tips

How I would approach the decision

1. Start with BNZ and one or two alternatives. I would compare BNZ, ASB and ANZ first, then include Kiwibank or The Co-operative Bank depending on your priorities.
2. Speak with a mortgage adviser who regularly handles contractors. Ask them to explain which lenders are most receptive to your specific income structure and why. A broker can compare lender policies without you having to navigate every bank independently.
3. Compare the total deal, not just the rate. Look at cashback, legal and switching costs, any low-equity pricing adjustments, repayment flexibility and the service you receive from the person managing your loan.
4. Protect your financial buffer. As a sole-income homeowner, keep enough accessible savings to cover both living expenses and mortgage payments during a slower contracting period. Don't commit all available cash to extra repayments if doing so leaves you without a buffer.

One final point: a 20% deposit is helpful, but it doesn't automatically mean every lender will offer identical pricing or treat all contracting income the same way. Your income history, business structure, debts and property valuation still matter.

Let’s narrow this down to your situation

I can make the shortlist much more useful if I know one thing: how are you paid as a contractor?

Congratulations on buying your first home on your own. With variable contractor income, a roughly 20% deposit and a mortgage to manage on a single income, I'd look beyond simply finding the lowest interest rate. You want a lender that understands how contractors earn money, treats you well after settlement, and gives you useful options if your income fluctuates.

My starting shortlist would be ANZ, ASB, Kiwibank and BNZ, with Westpac also worth comparing. I'd assess them on two separate questions: how well they handle self-employed borrowers and how well they look after existing mortgage customers.

One useful distinction: getting approved for a mortgage is not the same as getting good ongoing service. A bank might be flexible during your application but less helpful when you want to restructure your loan, make extra repayments or discuss a temporary drop in income.

1. Which lenders are worth comparing?

The following is a practical shortlist, not a definitive ranking of customer service for every contractor. A 2026 survey of mortgage advisers ranked ANZ first among the major banks for overall lender performance, followed by ASB, Kiwibank, Westpac and BNZ. Its criteria included lending flexibility, staff helpfulness, turnaround times and post-settlement support. ANZ and non-banks fare well in mortgage broker survey

1. ANZ

Strong starting point

ANZ is worth putting near the top of your comparison. The 2026 mortgage adviser survey rated it highest among the major banks overall, including on factors such as lending flexibility, turnaround and support. Its published application process also accommodates self-employed borrowers with accountant-prepared financial statements. ANZ and non-banks fare well in mortgage broker surveyHow to get home loan pre-approval

Why it may suit you: a good first bank to discuss if your income varies between contracts or financial years.

ANZ home loans

2. ASB

ASB ranked second among the major banks in the same adviser survey. It publishes clear home-loan application guidance and accepts up-to-date accountant-prepared financial statements for self-employed applicants. ANZ and non-banks fare well in mortgage broker surveyThinking about buying your first home| ASB Home Loan

Why it may suit you: worth comparing if you value a straightforward application process and want to understand how the bank calculates sustainable income from your accounts.

ASB home loans

3. Kiwibank

Kiwibank ranked third among the major banks in the 2026 adviser survey. Its published application checklist accepts financial statements prepared by an accountant for self-employed applicants. ANZ and non-banks fare well in mortgage broker surveyApply | Home loans

Why it may suit you: a credible alternative if you want to compare the overall banking relationship, loan structure and customer support rather than just the rate.

Kiwibank home loans

4. BNZ

BNZ offers a useful feature for managing uneven cash flow: its TotalMoney home loan can offset money in linked accounts against the balance on which interest is calculated. BNZ also publishes clear requirements for self-employed applicants, including two years of business financial statements. Best home loans: Canstar's Home Loan AwardsPreparing for a home loan appointment

Why it may suit you: if you accumulate money between contracts or keep a tax reserve in savings, an offset arrangement could reduce interest while leaving funds accessible. Check the current product terms and eligible linked accounts.

Caveat: BNZ ranked lower than the other four major banks in the 2026 mortgage adviser survey, so I'd pay particular attention to the quality of your actual service contact. ANZ and non-banks fare well in mortgage broker survey

BNZ home loans

5. Westpac

Westpac ranked fourth among the five major banks in the adviser survey and accepts accountant-prepared financial statements for self-employed home-loan applicants. ANZ and non-banks fare well in mortgage broker surveyHow to apply for a home loan

Why it may suit you: worth including as a competing offer, particularly if its proposed loan structure, pricing or ongoing contact arrangements are better for your needs.

Westpac home loans

One important qualification: the adviser survey measures lenders' performance as experienced by mortgage advisers, not the satisfaction of every existing borrower. It is useful evidence about lending processes, but it isn't proof that ANZ will necessarily give you the best ongoing service. ANZ and non-banks fare well in mortgage broker survey

2. What matters most for a contractor with variable income?

In your position, I'd assess each lender against these four things.

How it handles uneven income

Ask whether it considers your contract history, renewal likelihood, time between contracts and income trends—not just one year's taxable profit. Ask how it treats a strong recent year following a weaker one. The lender still needs to establish that repayments are affordable. Record Keeping Guidance affordability assessments for borrowers and guarantorsMortgages and home loans

Flexibility when you have a good month

Check whether you can make additional repayments, keep a cash buffer in an offset or revolving-credit facility, and avoid unnecessary break fees. A floating loan or offset arrangement can help with surplus cash, but floating interest rates are often higher than fixed rates.

A reliable person to contact

Find out whether you can contact a named home-loan specialist when you need to change your repayment arrangements, refix, or discuss a temporary cash-flow issue. Ask how quickly they respond and whether you can get help without repeatedly explaining your circumstances.

Support if work dries up

Ask what happens if a client cancels a contract or your next project is delayed. Lenders must consider eligible formal hardship applications, but they aren't required to approve every request. Temporary repayment relief can also increase the total interest you pay. Hardship applicationsHardship and financial difficulty

3. Does your 20% deposit change the picture?

Yes, potentially in your favour. A deposit of around 20% generally puts you in a stronger position than a borrower needing a high loan-to-value mortgage, although the bank still assesses your income, expenses, debt and ability to maintain repayments.

Because you're self-employed and borrowing on your own, I'd focus particularly on how much of your income the bank recognises after business expenses and tax adjustments. Two banks can assess the same financial history differently.

For a fair comparison, ask each lender to explain:

• Which financial years and documents it used to calculate your income.
• Whether it averaged income across years or placed more weight on recent earnings.
• Whether it recognised any legitimate business expenses that can be added back.
• What repayment buffer it expects you to maintain during a quiet contract period.

Don't assume a bank will lend more simply because your deposit is 20%. Its affordability assessment still matters. Assessing for affordabilityRecord Keeping Guidance affordability assessments for borrowers and guarantors

4. My recommendation for your next move

If you're already settled with a mortgage, I wouldn't switch banks just because another lender ranks higher in a survey. First find out whether your current lender is giving you a competitive refix rate, sensible repayment flexibility and good access to support. Refinancing can involve legal costs, loan fees, cashback clawbacks and fixed-rate break costs.

I'd also consider speaking with an independent mortgage adviser who works with several banks. The Financial Markets Authority explains that advisers can compare lenders and help review your loan as your circumstances change. Ask how the adviser is paid and whether any fees or commission clawbacks could apply. Mortgage advice

Let's narrow this down to your actual mortgage

I can make the shortlist much more useful if I know one thing: which bank currently holds your mortgage?

If you tell me that, I can focus on whether it is worth staying, negotiating a better deal, or comparing a switch to another lender for a Christchurch-based contractor with variable income.

Best mortgage lenders for a self-employed first-home owner in Dunedin

For your situation, I’d focus on lenders that understand contractor income, are willing to look beyond a simple salary calculation, and treat you fairly when your income fluctuates — not just lenders advertising the lowest interest rate.

Having bought your first home on your own with roughly a 20% deposit is a useful starting point. Your main challenge is likely to be demonstrating that your income is sustainable, while keeping enough cash available to handle quieter contracting periods, tax bills and unexpected home repairs.

In New Zealand, there are three things worth distinguishing:

• Getting approved: How a lender assesses contractor income, business expenses and income history.
• Being looked after: How easy it is to get help with repayments, restructure your loan or discuss a temporary cash-flow problem.
• Long-term value: Interest rates, fees, offset or revolving-credit facilities, and how much flexibility you have as your circumstances change.

A lender can be good at one and mediocre at another, so I wouldn't choose based on the advertised mortgage rate alone.

Which lenders I'd compare first

These are a practical shortlist, not a claim that one bank has the best customer service overall. Publicly available information is more useful for comparing application requirements and loan features than for proving which lender treats every customer best.

1. BNZ

Worth comparing for a structured application and ongoing loan support

BNZ publishes clear guidance for self-employed applicants, including the last two annual business financial statements. Its home-loan team can help you work through the application and loan structure. Preparing for a home loan appointmentGetting conditional approval

Why it may suit you: A good candidate if your contracting income is documented through annual accounts and you want to discuss how to structure your mortgage.

Ask specifically: How do you assess income when the latest year is stronger than the previous one, or when contracts are irregular?

Details: BNZ home-loan application guidance

2. ANZ

Worth comparing for personalised guidance and income documentation

ANZ says self-employed borrowers will need financial statements, preferably prepared through their accountant. It also offers home-loan coaching. How to get home loan pre-approvalHow to apply for a Home Loan

Why it may suit you: Especially worth a conversation if your accounts need explaining alongside your contract history, invoices or evidence of continuing work.

Ask specifically: Can you consider current contracts and year-to-date earnings alongside annual accounts, and what evidence would you need?

Details: ANZ home-loan application guide

3. Westpac

Worth comparing for access to a local home-loan expert

Westpac asks self-employed applicants for their latest accountant-prepared financial statements and lists home-loan experts serving Dunedin. How to apply for a home loanHome Loan Experts

Why it may suit you: If you prefer having a named person to contact rather than dealing with a different team each time.

Ask specifically: Will I have a consistent contact after settlement, and how are requests for repayment changes handled?

Details: Westpac home-loan experts

4. Kiwibank

Worth comparing if a straightforward application process matters to you

Kiwibank's published application checklist specifically accepts accountant-prepared financial statements for self-employed applicants. Apply | Home loans

Why it may suit you: Another mainstream lender to test against your existing bank's offer, particularly if you value accessible home-loan support and a clear explanation of fees and features.

Ask specifically: How much weight do you give to the latest financial year versus a two-year average, and what options are available if my earnings dip?

Details: Kiwibank home-loan application

My approach would be to compare BNZ, ANZ and Westpac first, then include Kiwibank. That is a starting shortlist based on published processes and access to support, not a verified ranking of underwriting flexibility or customer satisfaction.

What matters most after you've bought the house

Your lender's ongoing behaviour matters just as much as its original approval decision. I'd compare these features before moving your mortgage.

Feature	Why it matters for a contractor
Offset or revolving credit	Can help reduce interest when you have surplus cash between invoices, while preserving access to funds where the facility allows it.
Flexible repayment arrangements	Useful if you need to discuss a temporary reduction in repayments during a quiet period. Eligibility and costs vary.
Extra repayments	Helps you pay down principal faster in stronger months, provided your loan terms allow it without penalties.
A consistent contact person	Makes it easier to explain your income pattern without starting from scratch every time.
Clear hardship process	Important if a client stops paying, a contract ends or you cannot work for a period.

For example, ASB offers an Orbit home loan, which allows funds to be repaid and redrawn within an approved credit limit. That's one facility worth comparing if cash flow varies substantially, although you need to understand the risks of having your mortgage available to redraw. Does ASB offer a mortgage offset account?

I'd also keep a separate reserve for income tax, GST if applicable, and personal emergencies rather than using all your cash to reduce the mortgage.

How to assess whether a lender really looks after customers

Don't rely entirely on advertising or anecdotes. The Banking Ombudsman Scheme publishes a banking complaints dashboard with information on complaint types, responses and resolution outcomes. It cautions that direct comparisons can be misleading because banks differ in size, products and reporting practices. Complaints dashboardComplaints dashboard FAQ

For you, I'd pay particular attention to complaints about mortgage servicing, hardship assistance, poor communication and unexpected fees. You can also ask each lender how it handles repayment difficulties before you need that help.

My practical recommendation

1. If your current lender has treated you well, ask for a loan review first. You may be able to improve your rate or restructure your loan without refinancing.
2. Get competing offers from two other lenders. Compare the total cost, flexibility and quality of the person handling your case, not just the headline rate.
3. Consider a mortgage adviser who regularly works with contractors. Ask how they assess which lender is most likely to recognise your particular income pattern, and how they are paid.
4. Choose a loan that remains manageable in a quiet month. As a sole homeowner, you don't have a second household income to fall back on.

Two questions that would help me narrow this down

With those details, I can make the shortlist much more relevant to your actual circumstances, rather than simply listing New Zealand's biggest banks.

Congratulations on buying your first home on your own. As a self-employed contractor with variable income and a roughly 20% deposit, you're in a position where the quality of your lender's service after settlement can matter just as much as the interest rate you secured.

In New Zealand, I'd assess lenders on four things:

• Flexibility when income fluctuates: Can you manage repayments during quieter contracting periods without unnecessary friction?
• Access to your own money: How easy is it to make extra repayments, use a revolving-credit facility, or access available equity when appropriate?
• Help when circumstances change: Does the lender have clear processes for temporary repayment difficulties, restructuring, or changing repayment frequency?
• Customer service and responsiveness: Can you get a useful answer from someone empowered to help, rather than being passed between departments?

Your 20% deposit is a helpful starting point because it generally puts you outside the standard high-loan-to-value category for owner-occupier lending. But it doesn't guarantee the best interest rate or the most flexible service. And because you've already bought the property, I'd focus on how well a lender will look after you over the next five to ten years, not just which bank offers the cheapest deal today.

My shortlist for your situation

I would start by comparing these four lenders. This is a shortlist based on features that suit variable income, rather than a claim that one bank is universally the best at customer service.

1. Kiwibank — best starting point for income flexibility

My first enquiry

Kiwibank offers both revolving-credit and offset home loans. Its revolving facility has no fixed repayment schedule, while its offset product lets you keep savings accessible in linked everyday accounts while reducing the mortgage balance on which interest is charged. Revolving home loan | Home loansOffset home loan | Home loans

Why it suits you: If invoices arrive irregularly, you can use stronger months to reduce interest costs while keeping cash available for quieter periods.

Watch-out: Revolving credit requires discipline, and its variable interest rate may be higher than a fixed rate. Offset repayments still have minimum requirements, and money paid directly into the offset loan cannot be redrawn. Revolving home loan | Home loansOffset home loan | Home loans

Details: Kiwibank home-loan options

2. BNZ — best to investigate if you build up a cash buffer

BNZ's TotalMoney offset mortgage can link up to 50 eligible transactional accounts, including accounts you use for day-to-day finances. Money in those accounts offsets the relevant mortgage balance for interest calculations. TotalMoney home loans - Offset mortgagesTotalMoney home loans - Offset mortgages

Why it suits you: Contracting income can create periods when your bank balance is healthy followed by quieter months. Keeping accessible savings in eligible linked accounts can reduce interest without locking all your spare cash away.

Watch-out: Compare its floating offset rate with the fixed rate you could get on the same portion of your mortgage. Offset is most useful when you regularly hold meaningful cash balances.

Details: BNZ TotalMoney

3. ANZ — best to compare for a flexible-credit setup

ANZ's Flexible Home Loan is a revolving-credit facility linked to your everyday transactional account. You can pay money in and redraw within your approved limit, with no set repayments while the account remains within that limit. Flexible MortgageCompare interest rates and home loans

Why it suits you: It can work well if your contracting receipts come in unevenly and you want to use them to lower interest between expenses.

Watch-out: ANZ says the facility often has a higher interest rate and a monthly fee. It also reserves the ability to require repayment or reduce the credit limit, so don't treat the entire limit as a guaranteed emergency fund. Flexible Mortgage

Details: ANZ Flexible Home Loan

4. Westpac — best to compare for offset plus repayment choices

Westpac's Choices Floating with Offset lets you link eligible accounts to offset mortgage interest, make lump-sum repayments, choose fortnightly or monthly repayments, and combine floating and fixed portions. Choices Offset Floating home loanHome Loan repayment options

Why it suits you: You can keep a predictable base repayment on the fixed portion while using your spare cash to reduce interest on the flexible portion.

Watch-out: Ask for a comparison of the total cost, including floating-rate premiums, account fees and any conditions attached to the offer.

Details: Westpac Choices Floating with Offset

Which bank actually looks after customers best?

Features are only half the picture. For customer service, the most relevant independent evidence I found was Consumer NZ's 2026 customer survey, conducted from 20 February to 23 March with 1,958 participants. Its overall finding was disappointing: no bank met the threshold for its People's Choice Award that year. That is a reason to be cautious about declaring any bank the clear customer-service winner, rather than evidence that all banks perform equally. Best and worst banks in NZ for 2026, ranked by customersBest and worst banks in NZ for 2026, ranked by customers

I would therefore ask each bank these specific questions before moving your mortgage or changing its structure:

• Can I speak to a dedicated home-loan specialist after settlement, and how do I contact them?
• How quickly are rate reviews, repayment changes and loan restructuring requests usually handled?
• What happens if I have a temporary drop in contracting income?
• Can I split my existing loan between fixed and flexible portions without unnecessary costs?
• What fees, break costs or approval requirements apply if I want to change things later?

A bank's hardship policy is important, but it is not a promise that payments will be reduced whenever income dips. New Zealand's Banking Ombudsman explains that lenders must consider qualifying hardship requests, but can decline changes if they don't consider the proposed arrangement affordable over the longer term. Contacting the bank early is important. Hardship and financial difficultyBank not obliged to provide hardship support for long‑term affordability issues

How I'd structure a mortgage with variable contractor income

For someone in your position, I would consider a fixed-rate core plus a smaller flexible portion, rather than putting the whole mortgage on a revolving facility.

1. Fixed-rate core

Keep most of your mortgage on a fixed rate to make the essential repayments predictable, regardless of when clients pay you.

2. Flexible or offset portion

Use a manageable portion for irregular income and surplus cash. Compare revolving credit, which allows redraws, with offset lending, which generally keeps savings accessible in linked accounts.

3. A separate tax and emergency buffer

Keep enough cash for tax, GST if applicable, essential living costs and a period of reduced work. Don't rely on available mortgage credit as your only safety net.

The right split depends on how much your income varies, how much cash you usually hold and whether you tend to spend the surplus in strong months. Also check the limits on extra repayments before fixing a loan, as early repayment charges can apply.

What I'd do next

Since you've already purchased the home, I'd first ask your current lender to review your mortgage structure and pricing. You may be able to improve flexibility without switching banks. Before refinancing, check any fixed-rate break costs, cashback clawbacks, legal costs and new lending requirements.

If you want personalised help comparing the lenders, one detail would make my recommendation much more useful: which bank currently holds your mortgage?