Low income can mean different things to different people.
Traditionally, it refers to people who are having difficulty providing for their basic needs. But anyone can go through a prolonged but temporary low-income period, perhaps because of unemployment or steep medical bills. Regardless of income level, anyone who has income needs to use financial planning principles. Avoid debt or manage it so it doesn't become destructive. Interest rates are high and every dollar paid toward consumer interest is a dollar that's not available to meet needs.