Calculator

Premium Tools

Advanced analysis tools using your mortgage details from the calculator.

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Here's what the Refix Optimizer and strategy tools output. Sign in to unlock the full interactive version.

Sample output: Refix Optimizer projection

Best option: 2y + 3y split
Est. interest saved: $18,420

Sample output: Strategy comparison

StrategyTotal InterestLoan Term
Current plan$472,90029y 8m
Optimized split$454,48027y 11m

Available tools

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Invest vs Pay Down

Compare paying extra on your mortgage against investing the same cashflow.

Refix Optimizer

Model 6m/1y/2y/3y/5y split options and estimate long-term interest impact.

Split Optimizer

Find smart fixed/floating splits based on your risk and cashflow profile.

Live Rates

Track current NZ mortgage rates across major banks in one place.

Market Stats

See OCR context, lending trends, and housing signals that influence refix timing.

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Invest vs Pay Down

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