The short term debt funding source for retail and small business customers at ANZ is changing.Overdrafts in Australia fell nine per cent to $6.8 billion in the year to September 2008, with credit card outstandings increasing twelve per cent to $7.4 billion.The shift was mirrored across the Tasman, with overdrafts falling three per cent for the same period to NZ$1.95 billion, with credit cards increasing seven per cent to NZ$1.43 billion.Peter Marriott, chief financial officer, said arrears and impairment on the unsecured consumer section of the lending book have been small."There is very little evidence of impact on the credit card portfolio."Mortgage arrears though are trending upwards, particularly in New South Wales, with the overall level of 60 day arrears there has drifted from 24 to 39 basis points, but is yet to result in much more in the way of additional provisions".Australian residential lending increased at an above system 13 per cent for the year to $129 billion, with the second half strongest increasing seven per cent or $8 billion."Indeed the provisions within the mortgage business this year in Australia are not that much dissimilar to what they were in 2007."On the New Zealand front though, things are a bit different. The mortgage arrears there have increased from 20 basis points to 68 (basis points), so a substantial increase in mortgage arrears. There have been very few actual losses, but nonetheless, recognising the trend in property prices within New Zealand it has been appropriate to raise additional provisions".The New Zealand mortgage book increased ten per cent for the year to NZ$54 billion, but the residential slow down was most evident in the second half of the reporting year, with mortgage book growth just three per cent.Non-housing term loans in Australia increased 23 per cent to $79 billion, with New Zealand up 13 per cent to NZ$33.6 billion.