Investment Property Mortgage Broker NZ

Looking to grow your property portfolio? As experienced property investors ourselves, we understand the challenges of securing investment property finance in New Zealand. At OneStop Financial Solutions, we provide independent mortgage advice tailored to rental property investors. Whether you’re purchasing your first investment property or adding to an existing portfolio, our team is here to help.

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Why Work with an Independent Investment Property Mortgage Adviser?

Purchasing property for investment purposes requires more than just finding a loan. It requires strategic planning that considers tax implications, lending structures, and your long-term wealth-building goals. Here’s what makes working with OneStop Financial Solutions different:

Access to a Network of Banks and Lenders

We compare investment property loans from first-tier banks (ANZ, Westpac, BNZ, ASB, Kiwibank) and non-bank lenders. This means we can find competitive interest rates and lending criteria that suit your circumstances. This is important given the Reserve Bank’s LVR restrictions on investment lending.

Strategic Loan Structuring

Investment property finance isn’t just about the interest rate. We work alongside your accountant and legal advisers to structure your lending in a way that minimises tax, protects your assets, and maximises cash flow. This includes advice on interest-only vs principal and interest repayments, fixed vs floating rates, and whether cross-collateralisation or standalone security makes sense for your situation.

Expert Guidance from Property Investors

We don’t just arrange mortgages, we invest in property ourselves. This means we understand the real-world challenges of rental income fluctuations, vacancy periods, maintenance costs, and the current interest deductibility rules. We’ll share the lessons we’ve learned so you can avoid costly mistakes.

Investment Property Loan Options in New Zealand

Every property investor has different goals. Some prioritise cash flow, others focus on capital growth, and many are building long-term wealth for retirement. We help you choose the right loan structure:

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Equity Release & Portfolio Expansion

If you already own your home or existing investment properties, you may be able to use your equity as a deposit for your next purchase. We'll calculate your usable equity and help you understand your borrowing power without overextending your finances.

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Interest-Only Mortgages

Interest-only loans allow you to pay only the interest portion of your mortgage for a set period. This maximises your cash flow from rental income and may provide tax advantages - though it's important to understand that you're not reducing your loan balance during this period. We'll help you weigh the pros and cons based on your investment strategy.

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Fixed, Floating & Split Mortgages

Fixed rates offer certainty of knowing exactly what your repayments will be for the fixed term. Floating rates provide flexibility, including the ability to make extra repayments without penalty. Many investors choose a split (combination) mortgage that offers the best of both worlds. We'll analyse current interest rate forecasts and recommend a structure that suits your risk tolerance.

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Revolving Credit & Offset Facilities

These advanced lending features can help you reduce interest costs by using your savings to offset your mortgage balance. However, for investment properties, there are tax considerations around offset accounts that you should discuss with your accountant. We'll explain how these facilities work and whether they're right for your situation.

Investment Property Deposit Requirements

Under the Reserve Bank of New Zealand’s loan-to-value ratio (LVR) restrictions, most banks require a minimum 35% deposit for investment property purchases. Some lenders may accept 30% in certain circumstances. If you’re a first-time property investor without an existing home, you’ll need to save this deposit or consider alternative funding strategies.

Non-bank loans may offer higher LVR options (sometimes up to 80% or 90%), but generally at higher interest rates. We’ll help you compare the total cost of borrowing across different deposit scenarios so you can make an informed decision.

Our Investment Mortgage Process

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Initial Consultation

We start by understanding your financial situation, investment goals, and timeline. This includes reviewing your income, existing debts, current property equity, and long-term wealth-building objectives.

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Borrowing Power Assessment

We calculate your serviceability across multiple lenders, factoring in your income, existing commitments, and projected rental income from the investment property. Each lender assesses rental income differently. Some use 100% while others use 75% or 80%, your borrowing power can vary significantly between banks.

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Loan Comparison & Recommendation

We present your options with a clear comparison of interest rates, fees, features, and terms. We explain the pros and cons of each option and make a recommendation based on your circumstances. The final decision is always yours.

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Application & Settlement

We handle the paperwork, liaise with the lender, and work with your solicitor to ensure a smooth settlement. We're with you every step of the way, and available by phone or email if you have questions.

Our Lender Panel

I’m Not Just an Investment Mortgage Broker - I Own Investment Properties Too

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I’m Matt Willoughby, founder of OneStop Financial Solutions and a licensed mortgage adviser with 10+ years of experience helping New Zealanders achieve their property investment goals. I operate under Financial Advice Provider Licence FSP702911, regulated by the Financial Markets Authority (FMA).

I own multiple investment properties and understand firsthand the financial and emotional journey of building a property portfolio.

Real Results: Papakura Couple Case Study

When a Papakura couple approached us wanting to use their family home as a rental and purchase a new home to live in, they weren’t sure if it was financially possible. By restructuring their existing mortgage, accessing their equity, and finding the right lending structure, we helped them achieve both goals while saving thousands of dollars each year.

What Our Clients Say About Working With Matt & the OneStop Team

Matt was absolutely fantastic to work with! He made the whole mortgage process smooth, stress-free, and easy to understand. His communication was prompt, clear, and professional every step of the way, and he truly went above and beyond to get us the best possible outcome. We felt supported and informed throughout the entire process. We can’t recommend Matt highly enough—thank you for all your help!
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Trista Carter Avatar
Trista Carter
4/09/2025
This is now the second time I have used Matt for his financial services and he delivered again in a rough period for banks lending too. I would definately recommend him to anyone looking for a broker as he makes the whole mortgage process very simple. Thanks Matt for all the amazing work you have done for us!
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Terry Hill Avatar
Terry Hill
10/03/2023
Matt & team. Thanks for the super effort and guidance through the mortgage application process. Best in the business and can highly recommend Matt's services.
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Brenda Lesser-Dorfling Avatar
Brenda Lesser-Dorfling
9/27/2023
Matt is an excellent financial advisor who guided us through the tricky process of securing our mortgage. Very thorough and professional, yet friendly and relatable would be how I would describe Matt’s approach.
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Dan Frost Avatar
Dan Frost
11/08/2022
Matt and the One Stop team were incredibly helpful securing my mortgage and insurance. He thought out side the box and worked hard to overcome a few hurdles along the way. He was incredibly professional yet relatable and approachable. He made my first home buying experience incredibly smooth and easy. Thanks Matt!
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Gavin Woodward Avatar
Gavin Woodward
10/19/2021
Wow what can I say, my first home buying went so much smoother than I ever imagined! I knew absolutely nothing about mortgages and Matt had explained everything in terms I could totally understand. He made the whole process smooth and seamless, without much work from us because him and his team had done it all! Thank you so much for everything you've done so far 🙂
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Olivia Atrushi Avatar
Olivia Atrushi
6/08/2021

Frequently Asked Questions

Using equity to buy an investment is a common strategy. Your usable equity is typically your property value minus what you owe, minus the bank’s minimum equity requirement (usually 20%). For example, if your home is worth $800,000 and you owe $400,000, you have $400,000 in equity—but your usable equity might be around $240,000 (after the bank retains 20% equity in your property). We can calculate this precisely based on your circumstances.

With interest-only, you pay only the interest charges, your loan balance doesn’t reduce. This maximises cash flow but means you’re not building equity through repayments. With principal and interest (P&I), each payment reduces your loan balance and interest charges. Most investors start with interest-only for cash flow, then switch to P&I as their portfolio matures.

New Zealand’s interest deductibility rules have changed in recent years, affecting how much mortgage interest you can claim as a tax deduction. The rules differ depending on when you purchased your property and whether it’s a new build. We recommend discussing your situation with your accountant, but we can explain how different loan structures might impact your tax position.

In most cases, using a mortgage broker to buy an investment property is free to you, as we are paid a commission by the lender when your loan settles. In some complex situations, we may charge a fee, but we’ll always discuss this with you upfront before proceeding. Our full fee structure is outlined in our disclosure statement.

Ready to Discuss Your Investment Property Goals?

Book a free, no-obligation consultation with Matt today. We work with clients throughout New Zealand by phone, video call, and email. You don’t need to visit our Auckland office unless you’d prefer to.