Free NZ Rental Yield & Cashflow Calculator
Quickly estimate the rental yield and pre-tax cashflow of a NZ investment property
Simply download the spreadsheet, enter your numbers, and the results will calculate automatically.
The calculator estimates:
loan amount
P&I or interest-only repayment estimate
weekly and annual pre-tax cashflow
gross rental yield
loan to value ratio (LVR)
vacancy allowance
property management and basic holding costs
Important: This is a simple NZ first-pass calculator only. It does not replace full deal analysis, tax advice, lending advice, or property-specific due diligence.
Built specifically for New Zealand property investors.
Free download — no signup required.
Important: Open in Google Sheets first, then click File → Make a copy to create your own editable version.
(Optimised for Google Sheets — Excel compatible)
Need deeper deal analysis?
The full Kiwi Property Tools Toolkit includes more advanced spreadsheets for analysing rental properties, renovations, flips, mortgage structure, usable equity, due diligence, and project planning.
Explore the full Kiwi Property Tools Pack HERE
About this calculator:
This free NZ rental yield & cashflow calculator is designed as a simple first-pass tool to help property investors estimate rental yield, repayments, and pre-tax cashflow on an investment property.
It is built specifically for New Zealand users and includes key inputs such as purchase price, deposit, interest rate, repayment type, rental income, vacancy allowance, property management, and basic holding costs.
For deeper analysis, the full Kiwi Property Tools pack includes more detailed calculators and planning tools for deal analysis, renovations, mortgage planning, usable equity, and due diligence
How to Calculate Rental Yield and Cashflow in NZ
If you’re looking at buying an investment property in New Zealand, one of the first things you should do is run the numbers properly.
That usually starts with two basic questions:
What is the rental yield?
Will the property actually be cashflow positive?
That is where a rental yield and cashflow calculator can help.
A lot of Kiwi investors use rough numbers when comparing deals, but small costs add up fast. Rates, insurance, property management, vacancy, maintenance, and lending costs can all change the picture. A property that looks fine at first glance can feel very different once the real holding costs are included.
What is rental yield?
Rental yield is a simple way to compare rental income against the property purchase price.
Gross yield is usually worked out as:
Annual rent ÷ purchase price
This gives you a quick percentage to compare one property against another.
Gross yield is useful, but it does not tell the full story. It does not include mortgage repayments or the real annual costs of holding the property.
That is why cashflow matters too.
What is rental cashflow?
Rental cashflow is the money left over, or still required, after rental income is compared against the property’s key holding costs.
In simple terms, a rental cashflow calculator helps estimate things like:
annual rent
vacancy allowance
property management
rates
insurance
maintenance
body corp or levies where relevant
loan repayments
weekly and annual pre-tax cashflow
This helps you get a clearer first-pass view of whether the property may be cashflow positive, cashflow negative, or sitting somewhere close to break-even.
Why this matters in New Zealand
For NZ investors, it is easy to focus too heavily on headline rent or a rough yield number.
But in practice, the deal often comes down to:
your deposit
your interest rate
your repayment type
your vacancy allowance
your ongoing annual costs
That is why a NZ-specific calculator is useful. It gives you a more realistic starting point using the kinds of inputs property investors here actually care about.
How the KPT free calculator works
The Free NZ Rental Yield & Cashflow Calculator is designed as a simple first-pass tool.
You enter:
purchase price
deposit percentage
interest rate
loan term
repayment type
weekly rent
vacancy allowance
property management
key annual holding costs
From there, the calculator estimates:
loan amount
loan-to-value ratio
repayment estimate
gross yield
net yield
weekly and annual pre-tax cashflow
It is designed to be quick, practical, and easy to use.
What this calculator does not do
This free calculator is not meant to replace:
full deal analysis
tax advice
lending advice
legal advice
full due diligence
It is a first-pass NZ calculator, not a final purchase decision tool.
That means it is best used to quickly sense-check a deal before going deeper.
Why KPT built it
Kiwi Property Tools was built to create NZ-specific tools that actually work.
A lot of calculators online are too generic, too overseas-focused, or too simplistic to be genuinely useful for New Zealand property investors. This tool was built to give everyday Kiwis a more practical and realistic starting point.
Try the free calculator
Use the Free NZ Rental Yield & Cashflow Calculator to quickly estimate yield, repayments, and pre-tax cashflow on a NZ investment property.
If you want deeper analysis, the full Kiwi Property Tools pack includes more detailed tools for rental cashflow, mortgage planning, usable equity, deal analysis, flips, renovations, and due diligence.