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. Have A Question About This Topic? Name Email Address Message Thank you! Oops! Related Content Rollover Unused 529 Funds to a Roth IRA The SECURE Act 2.0 created a provision that allows unused funds from a 529 college savings account to rollover to a Roth IRA. Personal Finance Tips for Military Families Military families face unique challenges, making personal finance even more critical. What Is a Roth 401(k)? Roth 401(k) plans combine features of traditional 401(k) plans with those of a Roth IRA.