By David Hargreaves
New official figures from the Reserve Bank have revealed that around 40% of new mortgages by value are being taken out on interest-only terms.
The RBNZ has been collecting the information for over a year but has not previously published it.
The figures for May show that $2.996 billion worth of interest-only loans were taken out, which represented about 41.1% of the $7.287 billion worth of mortgages advanced.
And, separately, the RBNZ's latest figures for mortgage lending by loan to valuation ratio show that last month investors accounted for nearly 47% of new lending in Auckland, up from a touch under 46% in April.
The Auckland investors borrowed $1.85 billion of the total $3.946 billion borrowed in Auckland during May.
The proportion of investor buyers both in Auckland and through the country as a whole has been rising sharply during the current housing boom.
The RBNZ said that in terms of the whole country, in May 2016, over half of new lending for investor purposes was on interest-only terms. The RBNZ said these proportions have been fairly steady over time. "Only 1% of interest-only lending for investor purposes is above 80% LVR and this has been declining over time," the RBNZ said.
The RBNZ says interest-only loans are defined as having no scheduled repayments. This includes loans where borrowers independently choose to repay principal such as revolving credit loans which have a fixed limit.
Regulators in Australia became concerned when interest-only loans hit more than 40% of new lending across the ditch.
In December 2014 The Australian Prudential Regulation Authority (APRA) warned lenders it was "dialling up the intensity" of its supervision to reinforce sound residential mortgage lending practices. And the Australian Securities and Investments Commission (ASIC) said then it would "conduct a surveillance" into the provision of interest-only loans.
The RBNZ said in May 2016, almost 60% of all new mortgage lending was on principal-and-interest payment terms, while 40% was on interest-only payment terms.
"These proportions have been fairly stable since July 2015 when the data was first available (Figure 1).
The RBNZ said interest-only loans "tend to convert to principal-and-interest loans after a period of time".
"In March 2016, 40% of new lending was on interest-only payment terms.
"However on the banks’ loan books only 28% of all existing mortgages are on interest-only payment terms. These proportions have been fairly steady over time (Figure 2)."
The detailed figures show that as of the March quarter, banks had $213.704 billion outstanding in mortgages, of which $60.821 billion (28.5%) was on interest-only terms. The proportion of interest-only loans has been gradually rising. It was just under 28% in the September quarter.
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