A few clarifying points points on the bill:
- The congressman says "Provides an increase for all beneficiaries that is the equivalent of 2% of the average benefit." The actual formula change is to increase the first factor from 90% to 93%. That gives (almost) everyone an additional $333 per year. The high and low earners get the same dollar amount. Presumably, the average SS PIA is around $16,700 per year.
- There is an additional benefit for the over-$400k earners. It is very small, just 2% of the excess AIME (compared to 15% in the top band today).
- The donut hole makes sense if you know that collecting the full tax rate on all the earnings over the current cap would "overfund" SS in the short term. They are bringing in the additional tax dollars gradually. Of course, they could have taxed everything over the current cap at some reduced rate, then increased the rate gradually. Presumably, they figured the dh was more politically acceptable.
https://www.ssa.gov/OACT/solvency/LarsonBlumenthalVanHollen_20190130.pdf