American workers often pay less tax after they retire. But if you’ve built up a large nest egg in retirement accounts, you could face an unexpected increase in Social Security taxes. For You: 3 Little-Known Social Security Rules That Could Save You Thousands Consider This: I'm a Retired Boomer: 6 Bills I Canceled This Year That Were a Waste of Money Here’s what you need to know about the Social Security Tax trap. What Is the Social Security Tax Trap? The Social Security tax trap is an increase in Socia ...