5 Smart Investing Principles The slideshow presentation that you would like to view is too large for your current screen resolution. Click here to view to view the slideshow at full resolution. Launch Presentation » Have A Question About This Topic? Name Email Address Question Thank you! Oops! Related Content Do Our Biases Affect Our Financial Choices? Even the most seasoned investors have biases affecting their financial choices. Federal Income Tax Use this calculator to estimate your income tax liability along with average and marginal tax rates. How Stocks Work Understanding how a stock works is key to understanding your investments.