From Boats to Brokers From the Dutch East India Company to Wall Street, the stock market has a long and storied history. Share | Have A Question About This Topic? Name Email Address Message Thank you! Oops! Related Content Estimating the Cost of College This worksheet can help you estimate the costs of a four-year college program. Home Mortgage Deduction Use this calculator to assess the potential benefits of a home mortgage deduction. Tax Deductions You Won't Believe Here are some examples of deductions from the IRS that were permitted and some that were, uh, too creative.