Buying a $600,000 property in New Zealand requires a clear understanding of the income required under the RBNZ’s DTI rules, the deposit you need, and what your repayments will look like month to month.
To buy a $600,000 home in NZ with a standard 20% deposit ($120,000), you need a gross annual income of at least $80,000 under DTI 6x. Monthly repayments on the $480,000 loan at 5.50% over 30 years are approximately $2,725/month. The bank serviceability stress test at ~7.5-8.5% may set a different limit depending on your expenses and other debts.
The Numbers at a Glance
| 20% deposit | 10% deposit | |
|---|---|---|
| Deposit required | $120,000 | $60,000 |
| Loan amount | $480,000 | $540,000 |
| Min gross income (DTI 6x) | $80,000 | $90,000 |
| Monthly repayment (5.50%, 30yr) | $2,725 | $3,066 |
| Weekly repayment (5.50%, 30yr) | $629 | $708 |
First Home Loan: If you qualify (income limits and property price caps apply), the First Home Loan requires only a 5% deposit — reducing the cash needed to $30,000 but increasing your monthly repayment to approximately $3,236/month at 5.50%.
Minimum Income Required
Under the RBNZ’s DTI limit of 6x gross annual income, the minimum income needed to service a $600,000 purchase is:
With a 20% deposit ($120,000):
- Loan amount: $480,000
- Minimum gross income: $480,000 / 6 = $80,000 per year
With a 10% deposit ($60,000):
- Loan amount: $540,000
- Minimum gross income: $540,000 / 6 = $90,000 per year
These are DTI floors only. Student loans, car loans, and credit card limits all reduce borrowing capacity — meaning you may need a higher income if you carry any existing debt.
The bank’s serviceability stress test at approximately 7.5%–8.5% may be the binding constraint for some borrowers with high living expenses.
Repayments at Different Rates
Monthly repayments on a $480,000 loan (20% deposit scenario) at various rates, 30-year term:
| Rate | Monthly | Fortnightly | Weekly | Total interest (30yr) |
|---|---|---|---|---|
| 5.20% | $2,636 | $1,216 | $608 | $468,864 |
| 5.50% | $2,725 | $1,258 | $629 | $501,139 |
| 5.80% | $2,816 | $1,300 | $650 | $533,909 |
| 6.20% | $2,940 | $1,357 | $678 | $578,346 |
| 6.50% | $3,034 | $1,400 | $700 | $612,214 |
Saving the Deposit
Saving a 20% deposit of $120,000 is the biggest challenge for most first home buyers. Realistic timelines at different weekly savings rates:
| Weekly savings | Months to reach $120,000 |
|---|---|
| $300/week | 92 months (7.7 years) |
| $500/week | 55 months (4.6 years) |
| $750/week | 37 months (3.1 years) |
| $1,000/week | 28 months (2.3 years) |
KiwiSaver contributions count toward your deposit — a first home withdrawal can provide $15,000–$60,000+ depending on your balance, significantly accelerating the timeline.
What Does $600,000 Buy in NZ?
At $600k you’re in the Christchurch median range and within reach of Hamilton (~$710k median). In Wellington (~$750k) and Auckland (~$1.05m), $600k covers a smaller home, flat, or outer-suburb property.
Affordability at the Minimum Income
At $80,000 gross income (the DTI minimum) with a $2,725/month mortgage:
- Monthly gross income: $6,667
- Mortgage as % of gross income: 40.9%
- Adding rates (~$400/month) and insurance (~$250/month): 50.6% of gross income
At the DTI minimum, housing is expensive relative to income. A higher income or larger deposit significantly improves cashflow comfort.
Frequently Asked Questions
What income do I need to buy a $600,000 house in NZ?
With a 20% deposit ($120,000), you need at least $80,000 gross annual income under DTI 6x — and no significant existing debt. With a 10% deposit, the minimum rises to $90,000.
What is the deposit for a $600,000 home in NZ?
The standard requirement is 20% = $120,000. First Home Loan applicants may qualify with 5%–10% subject to Kāinga Ora income and regional price caps.
What are the monthly repayments on a $600,000 home in NZ?
With a $480,000 loan at 5.50% over 30 years: $2,725/month, $1,258/fortnight, $629/week.
How long does it take to save a deposit for a $600,000 home in NZ?
At $500/week saved, the $120,000 deposit takes approximately 55 months — or 4.6 years. KiwiSaver balances can be withdrawn as part of a first home purchase, reducing this timeline.
Can a couple afford a $600,000 home in NZ?
Yes — with combined income above $80,000, a couple can meet the DTI threshold with a 20% deposit. Joint income is combined in the DTI calculation, making $600,000 accessible to many two-income households.