The Traders' IRS Toolkit

for investors and traders without MTM election:
Schedule D
Schedule D Continuation Sheet
Schedule D Instructions
for MTM traders:
Form 4797, Sales of Business Property
Form 4797 Instructions

Schedule A&B
Schedule C
Schedule C Instructions

Publication 550, Investment Income and Expenses, (PDF)
Publication 550, Investment Income and Expenses, (HTML)
Publication 535, Business Expenses, (PDF)

Form 1040
Form 1040 Instructions
Form 3115, Application for Change in Accounting Method
Form 3115 Instructions