Personal information, such as your name, address, and Social Security number. 2. Income information, such as wages, salaries, interest, dividends, and capital gains. 3. Any deductions or credits you are eligible for. 4. Any taxes you owe, such as federal income tax, self-employment tax, and any estimated taxes. 5. Any payments you have made, such as estimated tax payments or payments from a prior year's tax return. 6. Your bank account information for direct deposit, if you choose that option.