This calculator compares the long-term financial outcomes of buying versus renting in NZ. It accounts for all the costs involved in home ownership - mortgage interest, property taxes, maintenance and insurance - and compares them against the cost of renting while investing your savings elsewhere.
Total outcome after 20 years:
Buying outcome: £0
Renting & Investing outcome: £0
Overall Difference: £0
Recommendation:
Crossover point:
Buying outcome: Your net wealth from buying (home value minus remaining mortgage).
Renting & Investing outcome: Your net wealth from renting (total investment value).
Overall Difference: The difference in wealth between the two options. Higher is better for the recommended scenario.
Crossover point: The year when one option becomes financially better than the other.
How to Interpret Results
The calculator compares two wealth-building scenarios over 25 years:
- Buying: Home appreciation and equity buildup minus remaining mortgage balance.
- Renting & Investing: Investment growth from your down payment savings and monthly cost differences.
The scenario with higher net wealth is financially advantageous based on your inputs and assumptions.
Want to know more about how this calculator works? Check out our How It Works page.
A tool we built for NZ property hunters
If you're using this calculator, you're probably at the verge of making a housing decision - either renting long-term or taking the plunge into buying. You've done the hard work of figuring out the numbers.
The next step is finding places to look at. But browsing property in NZ means juggling TradeMe, RealEstate, Homes and OneRoof - often with tabs all over your screen, listings you've forgotten about, and no easy way to compare them.
So we built HouseHunter - a small browser extension that captures listings as you browse and puts them all in one comparison table. One click to save, everything side by side. No signup, no accounts, your data stays on your device.
Try HouseHunter for freeDefault Values
We've pre-filled the calculator with realistic NZ market conditions based on current data. Feel free to adjust these values to match your specific situation:
- Mortgage Rate: Typical current market rates
- Property Tax/Rates: Based on NZ averages
- Maintenance: Industry standard estimates
- Rent & Investment Returns: Historical NZ averages
What We Calculate
The calculator compares your net wealth position after a specified period (default 20 years):
- Buying: Home value + paid-down equity minus remaining mortgage
- Renting: Investment portfolio value from savings and down payment
- Includes all costs: interest, taxes, insurance, maintenance and rent increases
- Accounts for home appreciation and investment returns
Frequently Asked Questions
Is it cheaper to rent or buy in NZ right now?
There's no single answer - it depends on your deposit, mortgage rate, how long you plan to stay, and how rents and house prices move relative to each other. Enter your own numbers into the calculator above to see which option comes out ahead for your situation.
How much deposit do I need to buy vs keep renting?
We default the calculator to a 10% deposit, a common minimum for many mortgage products, but you can enter any deposit size - as a percentage or a fixed $ amount - in the Buying section of the calculator. A bigger deposit cuts your mortgage interest but leaves less money to invest if you rent instead, so the calculator weighs both sides of that trade-off for you.
What is the crossover point where buying beats renting?
The crossover point is the year in your results when one option overtakes the other in net wealth - for example, when the equity and appreciation you've built up by buying finally outweighs what your rent-scenario investments have grown to. Run your numbers through the calculator and check the "Crossover point" figure under your results.
Does buying build more wealth than renting and investing the difference?
It can, but it isn't guaranteed - it depends on how home appreciation compares to your investment returns, and how large the gap is between your mortgage payment and rent. Our calculator runs a year-by-year simulation of both scenarios so you can compare final net worth using your own numbers; see How It Works for the full methodology.
How does Stamp Duty affect the comparison?
New Zealand doesn't charge stamp duty on residential property purchases, so our NZ default is $0. Any one-off purchase costs you do add (legal fees, furnishing) are treated the same way in the calculator - as money the renter invests instead, compounding against buying over time.
How does Council Rates affect the comparison, and is it charged to renters too?
Council Rates is charged to the buying scenario only, since in New Zealand it is paid by the property owner rather than the tenant. It isn't added to the renting scenario.
What assumptions does the calculator make, and can I change them?
We pre-fill realistic NZ defaults for things like mortgage rate, home appreciation and investment returns, based on current market data. Every one of them is editable - open "Advanced options" in the Buying section of the calculator to adjust Council Rates, maintenance, insurance, Stamp Duty and more, or edit any of the headline fields directly.
What doesn't this calculator account for?
The calculator assumes constant rates for home appreciation and investment returns, which can vary a lot in reality. It doesn't account for potential tax benefits of homeownership, which differ by individual circumstances, and it's a purely financial comparison - it doesn't weigh non-financial factors like stability, flexibility or lifestyle that might also influence your decision. See How It Works for the full list of assumptions and limitations.