I can’t tell you what the number has to be, certainly not for the UK. I am pretty confident that pensioners and jobseekers aren’t dying on the streets in vast numbers though, so they are subsisting on what they get. I think housing benefit is on top though, right? So you have to either maintain that, or allow for it, or do the public housing thing I would do.
Down here we periodically get the research pieces that show that there are only six rentals available in Melbourne that a person on unemployment payments could afford. And I mean literally six rentals. Yet vast numbers of unemployed people manage to live here. Fuck knows how.
Your numbers show why even a generous UBI that is 50% higher than the state pension will leave plenty of people ready and willing to wipe arses.
Tricky makes the point that the market would adjust to a UBI world in various ways. I think he’s wrong about the inflationary aspect.. but he’s not wrong. If UBI is there and deemed secure then a market to provide UBI level stuff like housing will arise. The average person won’t pay £600 in rent. Families will cohabit, people will houseshare, and people will build and provide single occupancy units for people who want their own place (and as those people have a secure and steady UBI, the investment proposition for serving that.. public or private.. is far more attractive than today when renting to the unemployed is incredibly risky and priced/served accordingly).