Example result based on the prefilled values.
Withdrawable Balance
NZ$49,000.00
First Home Grant
NZ$5,000.00
Total Available for Home Purchase
NZ$54,000.00
Continue your plan
Useful next calculations
When to use this calculator
- Before comparing lenders, brokers, or repayment options.
- When you want to test how a different deposit, rate, or term changes affordability.
- When you need a quick estimate before using a formal quote or agreement in principle.
- When you are stress-testing your budget against a potential rate rise to see the impact on monthly payments.
- When you want to understand the full cost of borrowing — not just the monthly figure — before you commit.
A realistic New Zealand planning example
Use these sample inputs as a quick scenario test, then change one variable at a time to compare outcomes.
Total KiwiSaver Balance (NZ$)
NZ$15,000
Years Contributed
25 years
First Home Buyer?
Yes — First Home
After entering these figures, review withdrawable balance, first home grant and total available for home purchase together rather than in isolation — each metric tells a different part of the story. Then rerun the tool with one input adjusted to see which variable has the biggest effect on all three outputs before you settle on a plan.
How to read your results
Withdrawable Balance
Use this metric to compare scenarios side by side and understand how changes in the key inputs drive the final outcome. If the figure surprises you, isolate one variable at a time and rerun the calculation to identify which assumption is responsible.
First Home Grant
Use this metric to compare scenarios side by side and understand how changes in the key inputs drive the final outcome. If the figure surprises you, isolate one variable at a time and rerun the calculation to identify which assumption is responsible.
Total Available for Home Purchase
This is the headline outcome of the calculation, but it is most useful when read alongside the supporting metrics below it rather than in isolation. Try changing one input at a time and watching how this total moves to understand which driver has the biggest impact.
Method & assumptionsAuthoritative sources
This calculator estimates the amount available from a KiwiSaver first home withdrawal and the First Home Grant for eligible buyers. The withdrawable balance is your total KiwiSaver balance minus the $1,000 minimum that must remain in the account. The First Home Grant of $1,000 per year of membership (capped at $5,000 after 5 years) is added if you are a first home buyer with at least 3 years of KiwiSaver membership. Note that the First Home Grant is subject to income caps, property price caps, and other eligibility criteria set by Kāinga Ora — this calculator provides a simplified estimate. Applications for both the withdrawal and the grant should be initiated well before your settlement date to allow for processing time, which can take several weeks. Always discuss your situation with a licensed financial adviser and your KiwiSaver provider before making decisions.
Common mistakes
- !Using an assumption that is not supported by a current local quote, bill, statement or official source.
- !Treating a generic estimate as a lender, provider, payroll or tax authority decision.
- !Mixing monthly and annual inputs without converting them consistently.
- !Forgetting location-specific taxes, fees, eligibility rules or payroll deductions where they apply.
- !Testing only one scenario instead of checking how a cautious assumption changes the result.
What to do next
- Run a second scenario with a cautious assumption so you can see the downside clearly.
- Compare the result with the related calculators below before making a decision.
- Check current local rules, eligibility and provider terms before applying or committing money.
- Keep a record of the assumptions so you can update the estimate when a quote, bill or pay figure changes.
- Use the result to prepare better questions for a lender, provider, adviser or employer rather than treating it as a final answer.
Frequently asked
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