Deposit Gap Calculator NZ
This calculator is built for New Zealanders working out whether they have enough deposit to buy the home they want, and if not, how big the gap is and what closing it would take. You enter the purchase price, the deposit percentage you are targeting, such as the 20% many lenders prefer, your current savings, and any KiwiSaver first home withdrawal you expect to have available. The calculator adds your savings and KiwiSaver to get your available funds, works out the required deposit at your target percentage, and shows the shortfall as a single dollar figure, with a label confirming whether you have reached your target or still have a gap to close. It also breaks down the required deposit, your available funds, and the loan amount you would need with the resulting loan-to-value ratio, so you can see how a bigger or smaller deposit changes your borrowing. Use it to test different price points, deposit targets, or savings scenarios, and to see how a low-deposit loan, more time saving, or a cheaper property would change your position. Because a KiwiSaver withdrawal has its own eligibility rules and a minimum balance requirement, and low-deposit lending can come with conditions and a higher rate, treat the results as a planning estimate rather than a loan approval, and confirm your figures with your KiwiSaver provider and lender.
A KiwiSaver first home withdrawal is subject to the rules, including leaving a minimum balance, so confirm your eligibility. Lower-deposit lending may be available but can come with conditions and a higher rate. Estimate only, not financial advice.
How it works
The required deposit is the purchase price times your target deposit percentage. Your available funds are your current savings plus any KiwiSaver you can withdraw. The gap is the difference. The calculator also shows the loan you would need, which is the price minus your deposit, and the loan-to-value ratio that goes with it. A lower target percentage reduces the deposit needed but increases the loan and LVR.
Worked example
On a $750,000 home with a 20% target, the deposit needed is $150,000. With $60,000 saved and $35,000 of KiwiSaver, you have $95,000, leaving a gap of $55,000. With the gap still open, the loan would be $655,000 at an 87% loan-to-value ratio; once the full $55,000 gap is closed the loan drops to $600,000 at 80%.
Related calculators
- Home Deposit Timeline Calculator: how long to save the gap.
- Loan to Value Calculator: your LVR.
- First Home Buyer Calculator: plan a first home.
- Borrowing Capacity Calculator: how much you can borrow.
- Buying an Apartment: Unit Titles: the background to this calculation.
- NZ KiwiSaver Contribution Comparison 2026: 3% vs 3.5% vs 4% vs 8%.
- KiwiSaver Provider Fee Comparison Calculator NZ 2026/27: 30-Year Cost.