I haven't run across anyone writing about the effect of making tax deferred contributions to 401K/403(b) and 457 plans on how much you can eventually expect from Social Security. If you make a tax deferred contribution to a retirement plan (and thereby declare less taxable income), your Social Security taxes will be reduced. But if you do this over a career of working, it seems like this would adversely affect your eventual benefit. I'm thinking of making some Roth conversions during the next few years when tax rates are artificially low and this seems like yet another reason to do so despite the fact I continue to work.