Debt-to-income (DTI) borrowing levels may be starting to increase again after falling substantially in the past three years, the latest quarterly release of DTI information from the Reserve Bank indicates.
But we appear to be some way off yet seeing the official DTI limits - which came into force on July 1 - having any impact. (RBNZ's summary of the latest figures is here.)
Ahead of the rules coming into effect, the RBNZ had indicated they would not be 'binding' in their initial phase. And this is very much the case. The DTI policy allows banks to lend:
- 20% of their residential loans to owner-occupiers with a DTI greater than 6 (that's a loan over six times annual income); and
- 20% of their residential loans to investors with a DTI greater than 7.
The RBNZ's now been compiling DTI information on a monthly basis - but releasing it quarterly - since 2017. We've been tracking it from the start.
Generally the trend was for DTI levels to fall in the 2017-19 period before then rising very strongly and hitting high levels in 2021.
While the official limit has been initiated at a DTI of over 6 for first home buyers and other owner-occupiers (without property collateral), the RBNZ has had something of a focus on DTIs of over 5, so, we are continuing with our table showing the percentage of DTIs of over 5 times. We focus on the latest month (September) and compare that with June of this year and September in each of the past two years.
The table below shows the percentage of new mortgage money for first home buyers and other owner-occupiers that is on debt-to-income ratios of over 5 times:
| Group | Sep 24 | Jun 24 | Sep 23 | Sep 22 |
|---|---|---|---|---|
| FHBs nationwide | 18.3% | 16.5% | 29.7% | 41.4% |
| Auck FHBs | 25.5% | 26.3% | 44.2% | 57.3% |
| Non-Auck FHBs | 12.7% | 9.5% | 17.5% | 27.9% |
| Other owner/occ nationwide | 19.4% | 18.2% | 21.1% | 34.2% |
| Auck other owner/occ | 27.2% | 23.6% | 28.8% | 45.3% |
| Non-Auck other owner/occ | 13.9% | 13.9% | 15.3% | 25.2% |
As you can see and as the below graph indicates, there's been a bit of a blip up again recently following sharp falls.
So, that's all quite interesting. But if we look at where the new rules actually kick in - the DTIs of over 6 - we can see that recent new borrowing is still well below the 20% level mandated by the RBNZ.
The table below shows the percentage of new mortgage money for first home buyers and other owner-occupiers that is on debt-to-income ratios of over 6 times:
| Group | Sep 24 | Jun 24 | Sep 23 | Sep 22 |
|---|---|---|---|---|
| FHBs nationwide | 2.4% | 2.5% | 6.3% | 10.9% |
| Auck FHBs | 3.9% | 4.4% | 11.2% | 19.1% |
| Non-Auck FHBs | 1.3% | 1.1% | 2.2% | 4.0% |
| Other owner/occ nationwide | 6.5% | 7.6% | 7.8% | 15.0% |
| Auck other owner/occ | 6.5% | 8.6% | 9.4% | 20.4% |
| Non-Auck other owner/occ | 6.5% | 6.6% | 6.6% | 10.6% |
All very comfortable, for now. But this does look like we are very much at the low point of the cycle. And it will be interesting to see what develops from here.
So, what of the investors? This is a grouping that has largely been on the sidelines in the past couple of years but there are now perhaps tentative signs of more interest. The figures below show there's plenty of room for investors to get more involved.
The next table shows the percentage of new mortgage money for both investors and owner occupiers that have investment collateral that is on debt-to-income ratios over seven times:
| Group | Sep 24 | Jun 24 | Sep 23 | Sep 22 |
|---|---|---|---|---|
| Investors nationwide | 5.4% | 8.1% | 10.5% | 15.8% |
| Auck investors | 4.5% | 6.5% | 12.1% | 20.3% |
| Non-Auck investors | 6.3% | 9.8% | 8.9% | 11.6% |
| Owner/occ + investment collateral nationwide | 7.7% | 9.8% | 9.1% | 16.9% |
| Auck owner/occ + investment collateral | 6.7% | 10.2% | 9.6% | 21.7% |
| Non-Auck owner/occ + investment collateral | 8.4% | 9.4% | 8.7% | 13.4% |
So, there we are. All very comfortable at the moment. For now the banks have nothing to worry about. No need to 'ration' the lending based on DTI numbers.
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