You could eliminate SSI/Disability payments, but that’s a drop in the bucket. Maybe a tweak to child tax credits since you’d be coming out ahead for most. Then an income limit as well.
Not sure of the math behind OPs numbers so could likely expand on it
If we implemented socialized healthcare and UBI, could we eliminate social security, medicare, medicaid?
Social Security would require a higher amount than 1k a month, lots of social security recipients get more than that. You’d be looking at a tiered system, which eliminates the U in it.
Medicare and Medicaid yes, but you’d be supplementing with higher taxes (a net positive more likely anyways since the higher taxes would likely be lower than the cost of private insurance)