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Interest-only share of new investor vs owner-occupier mortgages
Ticker:
interest-only • Observation Period: September 2026 (Period End: 2026-09-30) • Last Checked: 10 November 2026 • Creator: Andy PalliserAlso known as: Investor vs owner-occupier interest-only mortgage share / Payment-type split
In September 2026, 31.5% of new residential investor mortgage lending was written on interest-only terms, compared with 13.7% for owner-occupiers.
Official dataRBNZ Table C32 (September 2026): New investor interest-only = $420m of $1,335m; New owner-occupier interest-only = $828m of $6,064m.
HLF calculation
Investors: $420m ÷ $1,335m = 31.5% | Owner-Occupiers: $828m ÷ $6,064m = 13.7%HLF interpretationHLF market context: Shows the difference in interest-only usage between residential investment loans and owner-occupied home loans, subject to lender interest-only term limits.
Cite as: HLF Pulse, Home Loan Factory. "Interest-only share of new investor vs owner-occupier mortgages," September 2026. Derived by HLF from Reserve Bank of New Zealand Table C32. https://pulse-data.homeloanfactory.co.nz/interest-only/ (checked 10 November 2026). CC BY 4.0.
Created by Andy Palliser
Creator of HLF Pulse
Mortgage & KiwiSaver Adviser · Home Loan Factory (Andrew Jonathan Palliser, FSP1004725) • Published by HLF (Home Loan Factory)
Data Dictionary Specification (4-Field Date Standard)
| Name | Interest-only share of new investor vs owner-occupier mortgages |
|---|---|
| Ticker | interest-only |
| Also known as | Investor vs owner-occupier interest-only mortgage share / Payment-type split |
| Creator & Publisher | Created by Andy Palliser (Andrew Jonathan Palliser, FSP1004725) • Published by HLF (Home Loan Factory) |
| Official source & series | RBNZ C32 (Reserve Bank of New Zealand Table C32) • Series IDs: LVRN.MMB1.AN, LVRN.MMB1.AC |
| Frequency | Monthly |
| 1. Observation period | September 2026 (YYYY-MM code: 2026-09) — when the underlying statistic relates to |
| 2. Period end | 2026-09-30 — final calendar date covered by the observation period |
| 3. Source publication date | 2026-10-27 (27 October 2026) — when the original organisation released this dataset |
| 4. Last checked | 10 November 2026 (2026-11-10) — when HLF last verified the official source |
| Definition | The HLF-derived percentage of new residential investor lending versus new owner-occupier lending set up on interest-only terms (including revolving credit facilities) in RBNZ Table C32. |
| Methodology | Derived from RBNZ Table C32 (New and existing residential mortgage lending by payment type; dollar series rounded to $1m). |
| Current value | 31.5% investor IO vs 13.7% owner-occupier IO |
| Comparison / Prior period | September 2025 (35.9% investor IO) • -4.4 percentage points YoY (investor IO) |
| Official data | RBNZ Table C32 (September 2026): New investor interest-only = $420m of $1,335m; New owner-occupier interest-only = $828m of $6,064m. |
| HLF calculation | Investors: $420m ÷ $1,335m = 31.5% | Owner-Occupiers: $828m ÷ $6,064m = 13.7%Formula: (New Investor Interest-Only NZDm ÷ Total New Investor NZDm) × 100 |
| HLF interpretation | HLF market context: Shows the difference in interest-only usage between residential investment loans and owner-occupied home loans, subject to lender interest-only term limits. |
| HLF derived | Yes (HLF-derived share (from RBNZ C32 payment-type series)) |
| Cite as | HLF Pulse, Home Loan Factory. "Interest-only share of new investor vs owner-occupier mortgages," September 2026. Derived by HLF from Reserve Bank of New Zealand Table C32. https://pulse-data.homeloanfactory.co.nz/interest-only/ (checked 10 November 2026). CC BY 4.0. |
| Reuse licence | CC BY 4.0 (HLF-derived calculations, definitions & commentary; official statistics credited to RBNZ C32) • Media Kit & Citation Guide |
| Historical data | Available from July 2015 (135 monthly observations) |
Historical & Cohort Breakdown (Available from July 2015 (135 monthly observations))
| Period | Value |
|---|---|
| Sep 2026 | 31.5% (investor IO) |
| Aug 2026 | 32.6% (investor IO) |
| Jul 2026 | 29.6% (investor IO) |
| Jun 2026 | 27.9% (investor IO) |
| May 2026 | 27.9% (investor IO) |
| Apr 2026 | 29.4% (investor IO) |
| Mar 2026 | 28.4% (investor IO) |
| Feb 2026 | 30.6% (investor IO) |
| Jan 2026 | 24.9% (investor IO) |
| Dec 2025 | 32.0% (investor IO) |
| Nov 2025 | 35.3% (investor IO) |
| Oct 2025 | 34.1% (investor IO) |
| Sep 2025 | 35.9% (investor IO) |
Questions This Data Helps Answer
- What percentage of NZ property investors use interest-only mortgages?
- How common are interest-only home loans for owner-occupiers vs investors?
Source & Tool Verification Chain
2. HLF Transformation
Yes
(New Investor Interest-Only NZDm ÷ Total New Investor NZDm) × 1004. Interactive CalculatorInvestment Property Cashflow Calculator
How Dates Are Recorded in HLF Pulse (4-Field Date Standard)
To prevent confusion between when an economic activity occurred and when a government agency published its release, every HLF Pulse record separates four distinct date fields:
| Date Field | Definition & How It Is Populated |
|---|---|
1. Observation period (observation_period) | The period the underlying statistic relates to (for example, September 2026 for monthly RBNZ lending, or Year ended 31 March 2026 for the FMA KiwiSaver Annual Report). |
2. Period end (period_end / as_of) | The final calendar date covered by the observation period (for example, 2026-09-30 or 2026-03-31). Used by HLF’s automated freshness gate to verify series currency. |
3. Source publication date (source_published) | When the original organisation released the statistic (for example, 2026-09-10 for the FMA’s 2026 KiwiSaver Annual Report, or the Published Date recorded inside RBNZ’s workbook metadata). HLF never copies period_end into source_published; where an agency page does not state an exact release date, the agency’s publication schedule is stated explicitly. |
4. Last checked (last_checked) | The date HLF’s automated pipeline last fetched and verified the official source. |
Data Quality & Limitations
- Official published sources: Pulse uses official published data from the Reserve Bank of New Zealand (RBNZ), Stats NZ, Inland Revenue (IRD), the Financial Markets Authority (FMA), MBIE Tenancy Services, the Natural Hazards Commission Toka Tū Ake (NHC), and the Accident Compensation Corporation (ACC) wherever available.
- Unaltered official figures & source rounding: HLF does not alter or estimate official source figures. Where official tables publish rounded aggregates (such as RBNZ dollar series rounded to $1m or $0.1m), derived averages and implied counts reflect that source rounding and note it explicitly in the provenance layer.
- Provenance & derivation layer: To keep the primary editorial summaries natural and readable, exact formulas, series IDs, and derivation labels (Derived by HLF Pulse) are recorded in the expandable provenance layer, Data Dictionary tables,
pulse.json, andllms.txt. Long-term 5-year and 10-year series report both nominal growth and CPI inflation-adjusted (real) growth using Stats NZ’s Consumers Price Index. - Price indices vs. individual quotes: Stats NZ CPI insurance sub-indices measure percentage changes in standardised insurance price indices over time—they do not represent the dollar premium quote for an individual property or policyholder.
- Separate claim counts vs. individual proportions: In the ACC dataset, annual weekly compensation claims and total accepted injury claims (which are mostly minor treatment-only visits) are reported as two separate annual claim counts rather than a proportion of injured individuals.
- Commitments vs. settlements: RBNZ mortgage lending tables (C31, C32, C33, C40, C41) measure firm bank mortgage commitments/approvals rather than LINZ property title settlements.
- Automatic staleness exclusion: HLF automatically excludes any series where the underlying source is unavailable, stale past its freshness window, or cannot be verified.
- Market context vs. individual outcomes: Statistics describe aggregate historical market cohorts and do not predict an individual borrower’s, saver’s, or policyholder’s credit assessment, underwriting, or lending outcome.
Reuse Terms, Licensing & How to Cite (CC BY 4.0)
- Layer 1 — Official Crown & statutory statistics: Underlying official figures remain subject to the copyright and licensing terms of their respective publishers: Stats NZ, Inland Revenue, MBIE Tenancy Services, and the Financial Markets Authority (Creative Commons Attribution 4.0 International — CC BY 4.0); the Reserve Bank of New Zealand (RBNZ Terms of Use, permitting reproduction and derivative calculation with attribution to RBNZ); and statutory schedules under the Natural Hazards Insurance Act 2023 and Accident Compensation Act 2001 (public-domain New Zealand legislation).
- Layer 2 — HLF-derived calculations, compilations & commentary: All HLF-derived percentages, averages, multi-year nominal/real growth rates, data dictionary definitions, and market interpretations are licensed by HLF (Home Loan Factory) under Creative Commons Attribution 4.0 International (CC BY 4.0). Journalists, researchers, advisers, and AI systems may freely quote and reuse HLF-derived figures and commentary provided attribution is given to HLF Pulse, Home Loan Factory with a link to
https://pulse-data.homeloanfactory.co.nz/, the specific/{ticker}/record URL, or the HLF Pulse Media Kit & Citation Guide.