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Evidence · Home lending

The questions and original answers

Explore every question and captured response in the home-lending study, including answers asked nationally and from four cities.

questions
193
captured answers
1,094
AI platforms
4
collected
11 October 2026

01

Every question, with its answers

Each question was written as a voter would ask it and went to all four assistants. Some were also asked from a town. Open a question to read every answer to it in full.

Showing 20 of 193 questions

Show all 193

02

The tables behind the study

Every figure on the study page comes from these tables. They are CSV files, which open in any spreadsheet.

  • Question catalogue

    questions.csv

    One row per question.

    Question ID, borrower, exact question, group and collected answers

    193rows

    Download question catalogue (CSV)

  • Answers

    answers.csv

    One row per answer, with its full text.

    Answer ID, question ID, borrower, assistant, city, words, coded recommendations, showed a link and full text

    1,094rows

    Download answers (CSV)

  • Sources by answer

    sources.csv

    One row for each website recorded as a source of an answer.

    Answer ID, question ID, assistant, city, website and publisher type

    4,574rows

    Download sources by answer (CSV)

  • Checks against official sources

    checks.csv

    One row per statement checked.

    Check, answer ID, assistant, what the answer said, verdict, what the source says, source and date

    4rows

    Download checks against official sources (CSV)

  • Recommendation coding

    recommendation-coding.csv

    One row per coded national loan-choice or support answer.

    Answer ID, question ID, borrower, assistant, question group, recommended lenders and supporting passages

    360rows

    Download recommendation coding (CSV)

  • Platform comparisons

    platform-recommendation-counts.csv

    One row per platform, lender and question group.

    Matched panel, recommended answers, denominator and supporting answer IDs

    105rows

    Download platform comparisons (CSV)

  • City comparisons

    city-recommendation-counts.csv

    One row per city, lender and question group.

    Matched panel, recommended answers, denominator and supporting answer IDs

    112rows

    Download city comparisons (CSV)

Use these tables to trace findings back to the original questions and answers. The full text of each answer is also on this page, under its question.

03

Read in full and checked

Some answers were read in detail or checked against official sources. Those appear on the study page, beside the findings they support.

ChatGPT · National

Which bank is best for property investors with a home loan and a rental mortgage?

For a New Zealand property investor with both a home loan and a rental/investment mortgage, there is no single “best” bank for everyone. The best choice usually depends on whether you value lowest rates, lending flexibility, tax/accounting structure, cash-flow management, or future portfolio growth.

A shortlist of banks that often suit property investors:

Bank Why investors often consider it Best suited to
BNZ Strong investor lending options, good loan structuring tools, and BNZ TotalMoney (links multiple accounts to reduce interest). Canstar has recognised BNZ strongly for investment lending and home loan value. Canstar Investors who want flexible structuring and may build a portfolio
ASB Bank Often competitive for fixed investment lending and has good digital banking. Canstar Investors who prefer a large bank with strong online tools
Westpac New Zealand Offers offset-style features and has been recognised for residential lending value. Canstar Investors who want to manage household cash efficiently
Kiwibank Offers offset mortgage features and may appeal to borrowers wanting a simpler NZ-focused banking relationship. MoneyHub NZ Smaller portfolios or borrowers who value offset features
ANZ New Zealand Large lending capacity and broad mortgage offering; often used by established investors, though its structure differs from true offset lenders. Opes Partners Investors who value scale and relationship banking

What matters most for investors

1. Ability to separate loans

A good investor structure often separates:

  • your owner-occupied home loan
  • each rental property's lending
  • any renovation/development borrowing

This can make accounting, refinancing, and future borrowing easier.

2. Interest-only options

Many investors use interest-only periods to improve cash flow, especially when growing a portfolio. Check each bank’s policy, because approval depends on your income, equity, rental income, and overall debt position.

3. Offset or revolving credit features

If you keep cash reserves, an offset or revolving facility can reduce interest costs. For example, BNZ TotalMoney, Westpac offset products, and Kiwibank offset products are designed around linking cash balances to reduce mortgage interest. MoneyHub NZ

4. Future borrowing appetite

A bank that is competitive for your first rental may not always be the best when you own several properties. Investors often value lenders that understand:

  • multiple properties
  • rental income assessment
  • company or trust ownership structures
  • refinancing and equity release

A practical ranking by investor type

  • Growing a portfolio: BNZ is often worth a close look because of its investor-focused features and loan structuring. Canstar
  • Wanting the best overall package: Compare BNZ, ASB, Westpac and ANZ rather than focusing only on the advertised rate.
  • Wanting to reduce interest using spare cash: BNZ, Westpac, or Kiwibank offset options may be attractive. MoneyHub NZ
  • Chasing the lowest rate: A mortgage broker can often compare non-bank lenders and negotiate sharper pricing than a retail comparison alone.

If you tell me:

  1. your number of rental properties (or just one rental),
  2. approximate loan amounts on home and rental,
  3. whether you want to buy more properties, and
  4. whether you prefer lowest rate vs easiest future borrowing,

I can suggest a more targeted NZ bank shortlist and loan structure.

Ask anything

ChatGPT can make mistakes. Check important info.

Captured 11 October 2026

Gemini · National

Which bank is best for property investors with a home loan and a rental mortgage?

When you hold both a residential home loan (owner-occupier) and a rental mortgage (investment property) in New Zealand, choosing the "best" bank depends heavily on how you structure your debt rather than just chasing the lowest advertised interest rate.

Because of New Zealand tax laws—specifically, residential mortgage interest deductibility rules—and the necessity of keeping your personal debt separated from your investment debt for Inland Revenue (IRD) compliance, certain major banks handle multi-property portfolios much better than others.

Key Structural Considerations for Kiwi Investors

  1. The "Ring-Fencing" and Tax Requirement:
    Interest on a rental mortgage is generally tax-deductible against rental income, whereas interest on your owner-occupier home loan is not. If you mix these funds (e.g., drawing from a single revolving credit facility for both personal use and property deposits), untangling the tax math for your accountant becomes a nightmare, and you risk losing tax deductions.
  2. Cross-Collateralisation vs. Standalone Security:
    Some banks are aggressive at "cross-collateralising" (tying your home equity directly to your rental properties), which gives them control over all your assets if values fluctuate. Other banks allow standalone structures, protecting your home equity if a rental property faces issues.
  3. Offset and Revolving Flexibility:
    Major retail banks in New Zealand offer different mechanisms (such as BNZ's TotalMoney, Westpac's Choices, or Kiwibank's offset structures) that allow you to use cash savings to offset interest on your personal home loan while keeping your investment loans cleanly ring-fenced.

How the Major NZ Banks Compare for Investors

  • ANZ & ASB (The Portfolio Leaders):
    • Pros: They are traditionally favoured by property investors and mortgage brokers for larger portfolios because their back-end systems handle multiple security properties, complex trusts, and look-through companies (LTCs) smoothly. Their commercial and investor lending assessment policies are robust.
    • Cons: They can be strict on debt-to-income (DTI) limits and rental income shading (banks typically only count 70% to 80% of rental income to account for vacancies and maintenance).
  • BNZ (Best for Offset & Cashflow Structuring):
    • Pros: BNZ’s TotalMoney offset platform is widely regarded as one of the most flexible in the market, allowing you to link multiple transactional and savings accounts (including family members' accounts) to sharply reduce interest on your personal home loan while maintaining clear boundary lines for investment borrowing.
  • Kiwibank & Westpac:
    • Pros: Both offer competitive offset and revolving credit options and are often aggressive with cash-back contributions to win dual-property business when you refinance or transfer lending.
    • Cons: Approval speeds and policy interpretations can sometimes be rigid depending on regional property values and current Loan-to-Value Ratio (LVR) restrictions set by the Reserve Bank of New Zealand (RBNZ).

Actionable Next Steps

  1. Audit Your Current Equity: Calculate your usable home equity (up to 80% of your home's value minus your current home loan) to see how much deposit you have for the rental mortgage.
  2. Consult an Independent Mortgage Broker: For multi-property scenarios, a broker has access to all major New Zealand lenders and can shop around to see which bank is currently offering the best policy exceptions, cash-back incentives, and rental income calculation models for your specific income level.
  3. Coordinate with Your Accountant: Before signing any new loan documents, ensure your accountant signs off on the proposed loan split so that your rental mortgage is cleanly isolated for tax purposes.

Are you looking to purchase your first investment property, or do you already own multiple rentals and want to restructure existing lending?

Ask Gemini

Gemini is AI and can make mistakes.

Captured 11 October 2026

Google AI Mode · National

Which bank is best for property investors with a home loan and a rental mortgage?

There is no single "best" bank for property investors in New Zealand , as the right choice depends heavily on how your portfolio is structured, your Loan-to-Value Ratios (LVR), and your personal income versus rental income.

The major retail banks each have distinct advantages and policy nuances when dealing with both owner-occupied home loans and residential rental mortgages:

  • ANZ: Generally considered a front-runner for portfolio growth. ANZ tends to have sophisticated property-lending policies and robust tools (like their property profile reports). They are often favored by active investors looking to scale past 1 or 2 investment properties because of how they calculate usable equity and rental income streams.

  • ASB: Known for having a flexible and relatively pragmatic approach to servicing calculations. ASB's mobile banking platform and revolving credit/offset structures make managing multi-property finances clean and straightforward. They also frequently roll out sustainable home loan top-up initiatives or energy-efficient building incentives that can apply across your residential footprint. [Canstar NZ]

  • BNZ: Strong commercial and residential property divisions. BNZ is well-regarded by seasoned investors who need structured lending or more complex portfolio alignment (moving past simple retail lending into customized structures). They handle cross-collateralisation smoothly, though policies tighten strictly against current debt-to-income (DTI) and LVR guardrails. [Canstar NZ]

  • Westpac: Possesses one of the longest-standing dedicated property finance histories in the New Zealand market. They understand investor pacing well and offer competitive turnaround times through dedicated mobile mortgage managers who specialize in leveraging owner-occupier equity for investment deposits.

  • Kiwibank: As a locally owned alternative, Kiwibank can occasionally offer competitive sharp pricing or cash contributions to win business, though their appetite for high-LVR investor lending can fluctuate rapidly depending on reserve bank restrictions and internal caps.

Key Factors to Weigh Beyond the Bank Brand

  • Servicing Test Rates: Each bank uses a different internal test rate (often significantly higher than the actual interest rate) to calculate whether you can afford both your home loan and the new rental mortgage. One bank may test your borrowing capacity much more harshly than another.

  • Rental Income Shading: Banks don’t count 100% of your rental income. Most "shade" or discount rental income down to around 65% to 80% to account for vacancies, maintenance, and insurance. The specific percentage a bank applies can make or break your maximum borrowing limit.

  • Cross-Collateralisation vs. Separation: How a bank links your home loan to your investment property matters. Keeping them appropriately structured or ring-fenced protects your personal family home equity from the commercial risk of the rental portfolio.

To help narrow down which institution fits your situation best, tell me:

  • Are you planning to use equity from your current home as the deposit for the investment property?
  • Roughly what is your LVR (equity position) and expected rental yield?
  • Are you looking for principal-and-interest or interest-only repayments on the rental?
Ask anything

Captured 11 October 2026