Reserve Bank to deliver more rates pain but Heritage Bank boss Peter Lock sees little mortgage stress so far

It's a big week ahead for economic news with the Reserve Bank widely expected to lift interest official rates again tomorrow - for the fifth month in a row.

The question is when borrowers will start to feel the weight of mortgage stress given that the rapid rise the RBA's cash rate to catch inflation is far from over.

But Heritage Bank chief executive Peter Lock says savings buffers and low unemployment mean mortgage stress is not a problem just yet.

I speak with Peter Lock on ABC Newsradio