It's all moving in the right direction for the Reserve Bank.
House prices are falling and that's bringing with it sharp reductions compared with recent years in the amounts of mortgage debt new borrowers are taking on relative to their incomes.
This comes through very clearly in the latest debt to income ratio (DTI) figures produced by the RBZ. Owner occupiers nationwide, for example now have the least stretched DTI ratios since the RBNZ started this data series in 2017 - if looked at in terms of the amounts of mortgage money on DTIs of five-times or above.
Having finally received government approval the bank is working toward having a debt servicing framework ready so that restrictions could possibly be brought in by March 2024 if needed.
The RBNZ keeps a close eye on borrowing that's done on DTIs of over five - in other words where the amount borrowed is over five times the annual income of those taking out the mortgage. It's not completely clear what sort of DTI levels the RBNZ would be 'happy' with. And the question of what sort of limits might be imposed if a debt servicing framework is introduced have not yet been explicitly addressed.
What would be clear though is that the RBNZ would now be very happy with how the DTI ratios of new borrowers are tracking. And it would not have been very happy at all two years ago.
In terms of some of the highlights pinpointed by the RBNZ in the latest data release, which, remember is put out quarterly, but with monthly figures, the RBNZ says the monthly share of new mortgage commitments with DTI of above 5 has now decreased for 13 months in a row.
As mentioned, the debt-to-income data has been gathered and produced by the RBNZ since 2017. It is monthly, but released quarterly. Generally speaking the data between 2017-19 showed a falling trend, from quite high levels, before beginning to rocket. And now the figures since the height of the last housing boom in 2021 have been coming down again, with speed. It will be interesting to see if they do keep dropping from here.
As we've done since the start of this data series we are comparing the latest month's figures (December 2022) with the last month from the previous release (September 2022) and we are also comparing both these with December 2021.
DTIs of above five are regarded as getting up there, so we highlight the percentages of total mortgage money that is borrowed by both first home buyers and other owner occupiers at DTI ratios of above FIVE. Our calculations here exclude the (small) amount where the DTI size is unknown.
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 five times:
| Group | Dec 22 | Sep 22 | Dec 21 |
|---|---|---|---|
| FHBs nationwide | 35.2% | 41.4% | 58.3% |
| Auck FHBs | 49.6% | 57.3% | 72.9% |
| Non-Auck FHBs | 23.8% | 27.9% | 46.6% |
| Other owner/occ nationwide | 26.5% | 32.8% | 48.5% |
| Auck other owner/occ | 37.3% | 44.1% | 62.2% |
| Non-Auck other owner/occ | 18.6% | 23.6% | 38.1% |
So, some pretty substantial falls evident there.
That's the FHBs and the owner-occupiers. Our second table looks at the investor and those owner-occupiers with investment collateral. For this table we choose a more bracing DTI level and look at the percentages of those with debt-to-income ratios of over SEVEN times.
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 | Dec 22 | Sep 22 | Dec 21 |
|---|---|---|---|
| Investors nationwide | 11.7% | 12.7% | 35.5% |
| Auck investors | 16.4% | 17.2% | 45.2% |
| Non-Auck investors | 6.7% | 8.6% | 26.2% |
| Owner/occ + investment collateral nationwide | 8.3% | 13.4% | 34.0% |
| Auck owner/occ + investment collateral | 6.8% | 19.4% | 43.4% |
| Non-Auck owner/occ + investment collateral | 9.6% | 9.0% | 26.4% |
So, there again we have it.
Will this trend continue?
We'll still be keeping an eye.
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