A negative income tax that eliminates poverty, with a maximum benefit of $12,500 that phases out by $50,000 for single-adult households and $70,000 for two-adult households, is estimated to cost $839 billion per year.

Darrick Hamilton, Naomi Zewde, & co. released a proposal for a basic income that would (nearly) eliminate poverty. The payment would begin at $12,500, and begin phasing down at $10k in income for single-adult households, or $15k for two-adult households. Payment would decline until phasing out completely by $50k or $70k in income, respectively.

empirical