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. Related Content A New Way to Look at Your Bucket List Bucket lists don’t have to be for tomorrow. When Should You Take Social Security Monthly Social Security payments differ substantially depending on when you start receiving benefits. The Facts About Income Tax Millions faithfully file their 1040 forms each April. But some things about federal income taxes may surprise you.