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 Traditional vs. Roth IRA One or the other? Perhaps both traditional and Roth IRAs can play a part in your retirement plans. Infographic: 2019 Taxes by the Numbers Here are the official tax numbers for 2019. Retirement Planning With Your Special Needs Child in Mind Having a special needs child adds another layer of complexity to retirement planning. A special needs trust may help.