Can I buy an investment property?

Homeownership is the dream and goal of 99% of New Zealanders. Once achieved, homeowners often to turn to buying their first investment property.

How much deposit do you need for an investment property?

Current as of 16th February 2021
For your first home, the ideal deposit is 20% (here’s an article we wrote on a deposit for your first home). But the requirements for investment is in the middle of changing.  Over the past 10 years, the amount required to purchase an investment property has been as much as 40% of the purchase price and as low as 20%. At the moment the banks are requiring 40% deposit following the RBNZ’s announcement of LVR restrictions being enforced from 1st March 2021 and 1st May 2021

The minimum deposit for an investment property in 2021 is 40% with an exemption for new-build properties.

For the rest of this article, calculations will be assuming you need 40% deposit.

Do I need cash or can I use equity?

I have spoken to people who believe they need to save cash to purchase a property. However, if you already own your own home, you can use the equity in that home as the deposit for your new investment property. If you have enough, you can fund the entire deposit using that equity. Typically, you can borrow up to 80% of your own home.

Here’s an example:

Let’s say you own a home worth $600,000 with a mortgage of $380,000.  You can borrow a further $100,000 on this home (up to 80% of $600,000 which is $480,000).  You can then use this $100,000 as a deposit on your new investment property which would buy you up to $250,000 of new properties at 60% lending (if your income allows it).

So that’s the deposit side of things taken care of.  What about income?

How much income do I need to purchase a new investment property?

The calculation for the required income to purchase a new investment property is complicated.  It depends a lot on how many children you have, how much debt you have, sometimes even how many cars you have.  But there is a quick and easy formula we use to see if you are in the ballpark.

To calculate the maximum you can borrow: 5x your income and 10x your rental income.

In the example above, the total mortgage would be $630,000 (current mortgage of $380,000 + new mortgage of $250,000).  Let’s say you earn $140,000 and the new rental will earn $15,000 per annum (here’s an article we wrote on Gross Yield).  We can calculate the approximate affordable mortgage as:

$140,000 x 5 = $700,000
$15,000 x 10 = $150,000
Total estimate mortgage affordable: $850,000

Unless you have a high amount of secondary debt or other significant expenses, you could feel comfortable that your income is enough to afford an investment property.

Here’s an article we wrote on exactly how a bank calculates if you can afford an investment property.

What is a good yield on rental property?

Most people start by measuring the Gross Yield on a property (here’s an article on a 2 seconds formula for calculating yield).  This is the return on the property before expenses are taken out and provides a good benchmark assuming no unusual expenses.

Yields can vary throughout the country.  It is reasonably common to see yields of 5% in Wellington and Christchurch but closer to 3% in Auckland, where the houses are more expensive and capital growth tends to be higher.

Ultimately, you are chasing higher yield if your priority is to look for a cashflow positive property.  Find out what yield you need to get a positive cashflow and aim for an area where this yield is typical.

Purchasing more than 1 investment property

You may have noticed that, for the investment property to pay for itself on the bank’s affordability calculator, it would need a 10% return.  This is extremely high in New Zealand.  Properties usually return between 3%-6% depending on what you are purchasing.  This is typically why most New Zealanders only end up purchasing 1 or 2 properties; they simply run out of income.  The actual costs are much less with interest rates currently around low 2% but the banks must calculate if a property owner can afford interest rates at a much higher rate.


Some things to bear in mind.  Rentals do increase over time. So if you can’t afford a second or third investment property at the moment keep working on increasing your income; either through increasing rents or getting a pay rise.


Once you have your eye on a property add up your current mortgage and the new mortgage required to purchase the investment property.   Now, multiply your current income by 5 and your total rental income by 10.  If this number is greater than the future mortgage, it’s worth looking into getting a pre-approval.


Latest Posts

Revolving Credit Tax Trap for Investors

Revolving Credit can be an excellent tool for both homeowners and property investors to reduce interest costs and speed up the repayment of their mortgages while keeping the availability of…

Read More

Buying at auction can be exciting but also intimidating. Much like your year 5 school production, knowing what to do and when to do it will help you feel more…

Read More

How the 2020 LVR Changes Affects You

Updated 16th February 2021 It might feel like decades ago, but on 30th April 2020, the Reserve Bank announced the removal of LVR restrictions on banks in New Zealand.  In…

Read More

Deposits: How much do you need for your first home?

If you have less than 20% deposit, you are referred to (by the banks) as a Low Equity (or Deposit) Borrower.  You are required to meet a different set of…

Read More