In my second year with an HSA, and so far pretty happy, since I am healthy and use very little of it, it's well invested in a couple of vanguard funds, and my employer contributes the amount of my deductible and only requires me to put in a little bit. I am just about ready to maximize my payroll-deduction contribution on account of all of the obvious benefits, but I want to make sure I know what the possible drawbacks might be.
So I'm wondering what effect, if any, this kind of HSA contribution has on earnings for purposes of (eventual) social security payment? I.e., if I contribute, say, $2000, and my income and social security tax in turn go down, does that lower my eventual benefit? Should I max out the HSA anyway? If it matters, my salary is solidly in the 25% tax bracket, and likely to stay there.