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 Message Thank you! Oops! Related Content 18 Years’ Worth of Days The average retirement lasts for 18 years, with many lasting even longer. Will you fill your post-retirement days with purpose? Tax Rules When Selling Your Home The tax rules governing profits you realize from the sale of your home have changed in recent years. Leaving Your Lasting Legacy Want to do more with your wealth? You might want to consider creating a charitable foundation.