I still haven't found an solution anywhere for the following problem: Living (not just housing, but everything) expenses are a lot less for dual, or even triple, income households than for single people. So there's going to be a lot less pressure on dual income households to work beyond their basic income. Logically, this would put double (or even triple) the additional pressure on single income households. Under UBI, they'd have to provide enough in taxes to provide the UBI for themselves AND dual income households.
How do UBI proponents solve that problem?