This document provides a brief guide for small business owners on deductible business expenses and individual deductions. It lists various expenses that are often missed but can be deducted, such as travel expenses, employee meals, car expenses, rent, retirement savings, startup costs, and home offices. It also summarizes rules around deducting health insurance, using the standard versus actual mileage rate for car expenses, and taking the home office deduction. Deadlines for tax forms are provided, along with contribution limits and deadlines for retirement accounts.