This chapter discusses the law on creditor claims in the Czech Republic. The Czech Insolvency Act appears to deal with creditors’ claims in a fairly standard manner, making pre-insolvency claims subject to the process of claims submission and verification, and dealing with claims arising during the proceedings as administration claims. But the Insolvency Act actually confers upon creditors the power to decide on numerous of issues in the course of particular proceedings, eg, whether the debtor should be liquidated or reorganized. Many of the difficulties surrounding the Act’s rules on the submission and verification of claims are thus related to the question of who gets to decide on the course of the insolvency proceedings. The chapter then examines insolvency claims, administration claims, and non-enforceable claims in turn. Each section covers: the definition and scope of the claim; rules for submission, verification, and satisfaction or admission of claims; ranking of claims; and voting and other participation rights in insolvency proceedings.