Publications Library IRS Publication 15: Circular E, Employer's Tax Guide IRS Publication 463: Travel, Entertainment, Gift and Car Expenses IRS Publication 533: Self-Employment Tax IRS Publication 535: Business Expenses IRS Publication 538: Accounting Periods and Methods IRS Publication 541: Partnerships IRS Publication 542: Corporations IRS Pub 583: Starting a Business and Keeping Records IRS Publication 587: Business Use of Your Home IRS Publication 946: How to Depreciate Property