Comparing Investments This calculator compares the net gain of a taxable investment versus a tax-favored one. You are viewing this website at a small screen resolution which doesn't support calculators. Click here to view this calculator. Share | Have A Question About This Topic? Name Email Address Question Thank you! Oops! Related Content Driving Interest on Interest with the Next Generation Maybe your middle schooler is already hip to saving. Many kids this age do chores and earn allowances, perhaps putting part of what they earn into a savings account for college.... The Mattress Dilemma: Where to Stash Your Savings? Americans are saving more these days.1 Especially millennials. We know why to save: For emergencies, for retirement, to afford big-ticket dreams like home ownership or opening a business. But how to save is another matter. Paying Tax Later Doesn't Always Mean Paying Less 401(k) savings are taxed as ordinary income when funds are withdrawn.