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 Retiring Earlier Than Expected? What To Know Retiring earlier than expected can be disheartening. Learn steps that can help you smoothe the road ahead. Bi-Weekly Payments This calculator estimates the savings from paying a mortgage bi-weekly instead of monthly. Required Reading: The Economic Report of the President The Economic Report of the President can help identify the forces driving — or dragging — the economy.