Experts believe it is unlikely the Reserve Bank will ease back on mortgage lending restrictions this week but could look to make changes later this year.

The central bank will release its latest financial stability data on Wednesday - typically the point at which it gives an update on its loan to value ratio restrictions.

The bank lending restrictions were introduced in October 2013 but have been slowly eased back in recent years, with the latest tweak made in January after being announced last November.

BNZ economist Tony Alexander believes there is a 50-50 chance the Reserve Bank will ease