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 Question Thank you! Oops! Related Content Orchestrating Your Retirement Accounts Getting the instruments of your retirement to work in concert may go far in realizing the retirement you imagine. Systematic Withdrawals in Retirement Taking regular, periodic withdrawals during retirement can be quite problematic. Red Flags for Tax Auditors Here are six flags that may make your tax return prime for an IRS audit.