Publication 334, Tax Guide for Small Business (For Individuals Who Use Schedule C or C-EZ)
This publication contains general information about the federal tax laws that apply to small business owners who are sole proprietors and to statutory employees.
Publication 463, Travel, Entertainment, Gift, and Car Expenses
This publication explains what expenses are deductible, how to report them on your return, what records you need to prove your expenses, and how to treat any expense reimbursements you may receive.
Publication 505, Tax Withholding and Estimated Tax
This publication explains the two methods for the pay-as-you-go federal income tax, withholding and estimated tax.
Publication 509, Tax Calendars
This publication has three tax calendars with specific due dates for: filing tax forms, paying taxes, and taking other actions required by federal tax law.
Publication 510, Excise Taxes (Including Fuel Tax Credits and Refunds)
This publication covers the excise taxes for which you may be liable and which are reported on Form 720 and other forms. It also covers fuel tax credits and refunds.
Publication 535, Business Expenses
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.
Publication 538, Accounting Periods and Methods
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.
Publication 541, Partnerships
This publication provides supplemental federal income tax information for partnerships and partners. It supplements the information provided in the instructions for Form 1065, U. S. Return of Partnership Income, and the Partner’s Instructions for Schedule K-1 (Form 1065).
Publication 542, Corporations
This publication discusses the general tax laws that apply to ordinary domestic corporations.
Publication 587, Business Use of Your Home (Including Use by Daycare Providers)
This publication explains how to figure and claim the deduction for business use of your home. It includes special rules for daycare providers.
Publication 1544, Reporting Cash Payments of Over $10,000 (Received in a Trade or Business)
This publication explains why, when, and where to report cash payments over $10,000. It also discusses the substantial penalties for not reporting them.
Publication 1635, Employer Identification Number Understanding Your EIN
This publication provides general information on Employer Identification Numbers (EINs).