This publication explains how to claim a deduction for charitable contributions. It discusses organizations qualified to receive them, the types of contributions you can deduct, how much you can deduct, what records to keep, and how to report them.
This publication discusses common business expenses and explains what is and is not deductible. The chapters cover general rules for deducting business expenses and specific expenses.
This publication explains some of the rules for accounting periods and accounting methods. It is not intended as a guide to general business and tax accounting rules.
This publication discusses the general tax laws that apply to ordinary domestic corporations.
This publication discusses the passive activity and at-risk rules that may limit the amount of deductible losses from a trade, business, rental, or other income-producing activity.
This publication discusses who can represent a taxpayer before the IRS and what forms or documents are used to authorize a representative.