Social Security Do-over

Under a longstanding but little-known part of the [Social Security] law, retirees who decide to start collecting benefits are permitted to change their minds and start over, reaping the progressively higher payments brought by deferral until age 70.

In other words, you can start collecting at 62, saving and investing that money, and then at age 70 file a withdrawal application and still get the maximum benefits accorded to those who wait to start collecting. All you have to do is repay what you’ve collected so far (plus any money withheld for Medicare premiums). You can even deduct the repayment or take an income tax credit for taxes you paid on benefits.

You Can Have Your Social Security and Defer It, Too - NYTimes.com

This "feature" of the law probably doesn't have any relevance to us. (We most certainly have not been saving and investing the benefits I've been receiving for the past couple years.) Nevertheless, I should look into it just to make sure. Specifically, I wonder whether the tax deduction we'd get would come close to offsetting the cost of the repayment. Again, probably not. But no harm in looking.