Understanding rental yield and the cost of vacancies

In our September edition we shared practical tips on increasing your rental yield. This month, we are taking a step back to look at what yield actually is, why it matters, and how you can measure it properly using two new tools designed for Harcourts’ landlords. These calculators give you instant clarity on both your investment return and the financial impact of vacancy.



What is rental yield?
Rental yield is the return you receive on a property compared to its value. It shows how much income your investment is generating as a percentage.

There are two main types:
• Gross yield – Annual rent divided by the property’s value. A simple calculation that gives you a quick snapshot.
• Net yield – Annual rent minus expenses such as rates, insurance, maintenance, and management fees, divided by the property’s value.
Knowing both figures allows you to understand the true return you are receiving, not just the top line.

A simple example
Imagine you own a property worth $700,000 and rent it out for $700 per week:
• Gross Yield: $700 × 52 ÷ $700,000 = 5.2%
Now add in expenses – for example $7,000 per year in rates, insurance, management fees and maintenance:
• Net Yield: ($36,400 – $7,000) ÷ $700,000 = 4.2%
The difference shows why it’s so important to look at both figures, not just the top line.

Introducing the Harcourts Calculators
We now have two free online tools to help you understand your investment performance.

Rental property cashflow and yield calculator
This calculator shows you:
• Gross yield;
• Net yield;
• Loan to value ratio;
• Monthly and annual cashflow;
• The impact of mortgage repayments;
• How expenses influence return;
• How small changes in rent, price, or costs affect overall performance.

You can adjust the purchase price, rent, mortgage details, and expenses to see how each decision influences your bottom line. It is ideal for assessing both current investment properties and potential purchases.

What is a good yield?
There’s no single “right” number. Yields vary depending on the property type and location:
• Apartments often have higher yields but less capital growth.
• Family homes in popular suburbs may have lower yields but stronger longterm value.
• Regional areas can sometimes offer both but carry different risks.

The key is to know your numbers and decide whether your investment is giving you the balance you want between income today and growth tomorrow.

Rent and vacancy calculator
Every week your property is vacant costs you real money. This calculator shows:
• Annual income at your current rent;
• Lost income from vacancy;
• Alternate rent scenarios;
• Vacancy comparisons;
• The financial impact of setting rent too high;
• How reducing vacancy protects your return.

It is designed to help you make clearer pricing decisions by showing exactly how long vacancy erodes your annual yield.

Why these numbers matter:
• Performance check – Compare your return against other properties and investments.
• Decision making – See whether rising costs or longer vacancy periods are affecting your return.
• Planning ahead – Understand whether your investment is performing strongly enough to meet your financial goals.

Yield is not the only measure of success, but it is one of the simplest and most powerful. When combined with vacancy analysis, you get a full picture of how well your property is working for you.

Try our free investment calculators


We have created two easy online tools to help you understand and improve your rental return.

The Cashflow and Yield Calculator shows your gross yield, net yield, and monthly cashflow after expenses and mortgage repayments:
▶ Use the Harcourts Cashflow and Yield Calculator www.harcourts.net/nz/property-management/rental-yieldcalculator

The Rent and Vacancy Calculator shows how much income you lose through vacancy and how different rent levels affect your annual return:
▶ Use the Harcourts Rent and Vacancy Calculator www.harcourts.net/nz/property-management/vacancy-calculator

Both tools are free, simple to use, and give you a clearer picture of how well your investment is performing.

Next steps
If you would like help interpreting your results or want a personalised strategy to improve your return, speak with your Harcourts property manager. We can review your rent, your vacancy history, and your property’s condition to identify opportunities to strengthen both yield and long term value.

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