Your weekly mortgage repayments at current rates
From Aaron’s YouTube: “Mortgage cost 4.49% #newzealand #firsthome #kiwisaver ##nzfirsthome #nzmortgage”
Video not loading? Watch it on YouTube
Posted 22 October 2025
The short version
- At a 4.49% one-year fixed rate, a $600,000 mortgage costs a specific weekly amount you can plan for.
- An $800,000 loan at this rate will cost more per week, but the exact figure is calculable upfront.
- For $1 million of lending, your weekly repayment will be higher again at this current rate.
- These figures help first home buyers and refinancers budget accurately before applying.
Why weekly costs matter
Most New Zealanders budget weekly, not monthly. Knowing your exact mortgage cost per week makes it easier to see how it fits with your pay cycle and other expenses.
Aaron emphasises saving this reference because banks test whether you can handle repayments at higher rates than today's. If you're comfortable with today's payments, you'll likely pass their tests.
How to use these numbers
If you're comparing properties in different price ranges, calculate each one's likely mortgage cost at today's rates. A $600,000 loan will be proportionally cheaper than $800,000 or $1 million.
Remember these figures are for the principal and interest repayments only. You'll need to add rates, insurance and maintenance costs to get the full picture of home ownership.
When rates change
The 4.49% rate Aaron mentions is a one-year fixed rate. When your term ends, your new rate may be higher or lower depending on market conditions.
Smart borrowers plan for both scenarios. Fixing part of your loan or setting up an offset account can give you flexibility when it's time to renegotiate.
This is general information, not personalised financial advice. For advice on your situation, talk to Aaron.
Keep learning
How offset accounts actually work
An offset account links your everyday savings to your mortgage. You only pay interest on the difference.
Paying extra on your mortgage: does it actually work?
Yes, it works. Extra repayments go straight onto the loan balance, and interest is charged on the balance, so every extra dollar stops earning the bank interest for the rest of the loan.
The "special" rate: what 20% deposit actually buys you
The rates NZ banks advertise are usually "special" rates — and the headline condition is at least 20% deposit or equity.
Weekly vs Monthly Repayments: What Actually Saves You Money
Paying weekly instead of monthly doesn't automatically save you money or time on your mortgage
How Extra Repayments Can Save You Years on Your Mortgage
Paying an extra $970/month on a $500k loan at 5% saves 13 years.
How Small Extra Repayments Save Big on Your Mortgage
An extra $5/day ($35/week) on a $650k loan at 7% saves $112,000 interest over 30 years.
Why New Zealand Mortgage Rates Are Increasing
All major NZ banks have now increased their longer-term fixed mortgage rates.
How Your Daily Coffee Could Save You $107,000 on Your Mortgage
Putting just $5 a day extra on a $500k mortgage at 7% saves $107,000 in interest.
3 Times Refinancing Your Mortgage Doesn't Make Sense
Your current bank may already offer the best terms (like offset accounts or discounts) for your situation.
Aaron's 2026 Interest Rate Predictions for NZ Homeowners
Aaron predicts mortgage rates will likely stay flat through 2026 despite recent bank increases.
How Rate Lock Agreements Protect You From Rising Interest Rates
Rate lock agreements let you lock in a chosen interest rate before it's applied to your mortgage.
Why Rising Interest Rates Can Help House Prices Stay Stable
Rising interest rates help keep house prices stable.
The hidden interest-only mortgage trap
Interest-only loans have much higher repayments after the interest-only period ends, as you still repay the full loan over the remaining term.
Offset Accounts vs Revolving Credit: The Key Difference
Offset accounts let you link multiple savings accounts to offset mortgage interest, while revolving credit is one lump sum.
Why the OCR drop hasn't lowered mortgage rates yet
The OCR drop hasn't yet translated to lower fixed mortgage rates.
The surprising impact of an OCR cut on your mortgage
The OCR has been cut, but some economists believe this was the wrong move.
Offset accounts in the real world: the $50,000 example
A $50,000 offset account on a typical NZ mortgage saves around $67 per week in interest.
When Fixed Loan Break Fees Cost Thousands
Fixed term break fees can cost tens of thousands if rates drop significantly.
Latest Fixed Rate Drops: What This Means for Your Mortgage
Six-month fixed rates have dropped to 5.49%.
3 Ways to Pay Off Your Investment Property Mortgage
Principal and interest repayments use both your income and rental income to steadily pay down the mortgage.
How Your Loan Term Affects the Interest You Pay
A 10-year loan term could save you over $500,000 in interest compared to a 30-year term.
3 Reasons Some People Get Cheaper Interest Rates
Borrowers with 20%+ deposits get lower rates than those with smaller deposits.
How a $50,000 Offset Account Saves Interest on Your Mortgage
A $50,000 offset account saves $242,000 in interest over 30 years on a $700,000 mortgage at 5%.
Latest Interest Rate Drops: What It Means for Your Mortgage
The mortgage rate war is heating up as banks compete by lowering their interest rates.
What a $10 Million Mortgage Costs
A $10.05 million purchase needs a $2.1 million deposit (20%).
Refix or Refinance: What’s the Difference?
Refixing means staying with your current bank and locking in a new interest rate when your term ends.
How Lower Test Rates Affect Your Mortgage Borrowing Power
NZ banks have lowered their test rates to around 8%, increasing borrowing power.
Fixed vs. Floating Rates: The Key Differences
Fixed rates are usually cheaper than floating rates and lock in your rate for a set term (e.g. two years at 5%).
Refix vs Refinance: How Much Can You Save on Your Mortgage?
Refixing a $750,000 mortgage from 7% to 4.99% saves over $200 per week.
Should you pay off your mortgage faster? The trade-offs
Faster mortgage payoff saves you interest and gives psychological benefits like feeling in control of your debt.