Publication 535 What is a bad debt and how to claim it What is a bad debt and how to claim it Publication 535 IRS Publication 535 Publication 535 IRS Publication 535 IRS: Business Bad Debts IRS Publication 535 IRS: Business Bad Debts What is a bad debt and how to claim it IRS Publication 535 IRS Publication 535 http://www.irs.gov/publications/p535/ch10.html IRS: Publication 535, Business Bad Debts Oil and Gas IRS Publication 535 www.irs.gov/publications/p535/ch10.html