Extra payments reduce your total interest and loan term
Monthly Payment
$2,605.04
Fortnightly Payment
$1,202.33
Payoff Time
30.0 years
Total Interest
$537,810.72
How much can I save with extra repayments?
Even small extra payments make a big difference over time. Adding $100 per month to a $400,000 loan at 6.79% can save you over $60,000 in interest and cut years off your loan. Try different amounts above to see the effect.
Monthly vs fortnightly -- what is the difference?
Paying fortnightly means you make 26 payments per year instead of 12 monthly ones. This works out to roughly one extra monthly payment per year, which reduces your loan term and total interest.
Can I make extra payments on a fixed-rate loan?
Most NZ banks let you make limited extra payments on fixed-rate loans (often up to $5,000-$10,000 per year without penalty). Floating-rate loans usually allow unlimited extra payments. Check with your bank for the exact rules.
Disclaimer: This calculator provides estimates based on current HMRC rates and thresholds for the 2025/26 tax year. It does not constitute professional tax, financial, or legal advice. Your actual liability may differ depending on your individual circumstances. Always consult a qualified accountant or tax adviser before making financial decisions. Read our terms
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