Bridging the Confidence Gap In the world of finance, the effects of the "confidence gap" can be especially apparent. Share | Have A Question About This Topic? Name Email Address Message Thank you! Oops! Related Content Roth 401(k) vs. Traditional 401(k) This calculator compares employee contributions to a Roth 401(k) and a traditional 401(k). Federal Income Tax Use this calculator to estimate your income tax liability along with average and marginal tax rates. Social Security: By the Numbers Here are five facts about Social Security that might surprise you.