Of the 1 percenters interviewed for this article, almost all — conservatives and liberals alike — said the wealthy could and should shoulder more of the country’s financial burden, and almost all said they viewed the current system as unfair. But they may prefer facing cuts to their own benefits like Social Security than paying more taxes.
The maximum monthly benefit is around $2500, or $30,000 annually. If you took it all it'd be equivalent to raising the tax on a million dollar earner (for the entire amount) by 3 percentage points. For a ten million dollar earner, 3 tenths of a percentage point.