There are very many people on disability and on welfare that have taxable incomes less than $20,000.People who are unable to get full time employment for one reason or another. People on welfare, people who got screwed out of their retirement money. Peiple in between jobs...
With greater and greater difficulty, frequent trips to the food banks and very few leisurly activities.
Some time ago, I volunteered to do tax returns for some of these people (Some support from the government is dependent upon filing a tax return).
You would not believe how little money these people have to live on.