NZ Mortgage & First Home Loan Calculator
Calculate your borrowing power under RBNZ Debt-to-Income (6x DTI) caps, LVR deposit restrictions (20% vs 5% First Home Loan), and bank stress tests.
Income & Property Details
RBNZ caps total debt at 6x this gross income for owner-occupiers.
Maximum Property Purchase Price
Maximum Mortgage Loan: $640,000
Mortgage Repayment Schedules
Banks test your affordability at $5,038/month to ensure you can afford future rate hikes under the CCCFA.
RBNZ Mortgage Rules Explained (DTI & LVR)
Debt-to-Income (DTI 6x)
Reserve Bank rules cap new mortgage debt so that total personal debt does not exceed 6 times gross annual income for owner-occupiers (7x for property investors).
Loan-to-Value (LVR 20%)
Standard retail bank rules require buyers to have at least a 20% deposit. First home buyers eligible for Kāinga Ora First Home Loan can buy with a 5% deposit.
📊 Statutory Breakdown Matrix
| Statutory Component | Amount / Metric |
|---|---|
| RBNZ Debt-to-Income (DTI 6x) Ceiling | -- |
| Bank Test Stress Interest Rate | -- |
| Tested Monthly Stress Repayment | -- |
| Governing Regulatory Borrowing Constraint | -- |
| Maximum Permissible Home Loan Capacity | -- |
Engr. Muhammad Shahzad
Principal Financial Systems Architect & Statutory Compliance Specialist
Lead software and systems architect specializing in high-performance browser computing, algorithmic validation, financial models, and zero-telemetry client-side privacy architecture.