I’m currently deciding on whether to fix or not. My school of thought is it would be wise to fix (in my case) as rates are at a historical low (reserve bank just knocked another 0.25 off). Some people say further cuts are in the pipeline but chances are they will creep back up to historical average in a few years to come. I might fix in for 5 years, that way I have a bit more control with finances/cash flow and can be more confident when increasing my IP portfolio.