Here are your weekly rates

I thought that it was what they can afford to pay in interest% based on a calculation on projected or current(?) defaults, and the value of the PF.

There was much discussion on LW heading for trouble owing to too small a pf. Since then, they announced that the rates would be variable, (in my understanding, I'll delete if wrong), most weeks the rates have been as they were before it became variable, which I find a bit strange, given that they admitted that they needed to protect the stability of affairs by making the rate variable.

I wonder why they think they can continue to offer these prior rates. I'd like to know how to see the calculation that they use to predict this. I don't think they are known for publishing up to date pf figures though. If the pf has stayed smaller, as it was, why are LW paying % eg 4% on the easy access version, rather than say, 3.8% they were paying in Dec/early Jan.