A contract with a debtor already in enforcement is just worthless paper. Check the other side first

Central Register of Enforcement Proceedings (CEE)

The CEE is a public register of enforcement proceedings maintained by the Czech Chamber of Bailiffs under the Enforcement Code (Act No. 120/2001 Coll.); the details, including the fee, are set by Decree No. 329/2008 Coll. The official portal is ceecr.cz. A query costs CZK 60 per person and shows whether and how many enforcement proceedings are conducted against them. The register captures pending enforcement; it is not proof of someone's overall financial standing, but it is a strong indication that the person is already subject to compulsory enforcement.

Insolvency Register (ISIR)

Under Section 419 of Act No. 182/2006 Coll. (the Insolvency Act), ISIR is a public administration information system managed by the Ministry of Justice. It is public and free of charge: anyone may inspect it and make extracts (isir.justice.cz). It shows whether insolvency proceedings have been opened against a person and at what stage they are.

How creditors are satisfied: enforcement = priority, insolvency = pro rata

A contractual penalty, default interest or an acknowledgement of debt does not improve the debtor's solvency; it only increases the debt. What matters is how creditors are satisfied from limited assets, and here the two regimes differ:

• In enforcement, the principle of priority applies, not proportionality. For movable assets, the order of payment follows the day the enforcement petition (or a further creditor's application) reached the court; only claims with the same rank are satisfied pro rata, and preferential claims under special legislation are paid outside the ranking (Section 332(1) and (3) of the Civil Procedure Code). For real estate, the proceeds are first divided into classes (costs of the state, mortgage claims, the enforcing creditor and secured creditors, maintenance, taxes and insurance contributions, other claims), within a class by rank, and pro rata again only among claims of equal rank (Section 337c(1), (2) and (5)). In practice: a later, unsecured creditor is served only after earlier enforcement proceedings and security interests, and with an over-indebted debtor usually receives nothing.
• In insolvency, the opposite principle of pro rata satisfaction applies. Once proceedings are opened, claims that can be lodged by application may not be pursued by a lawsuit, and enforcement affecting the insolvency estate may be ordered but not carried out (Section 109(1)(a) and (c) of the Insolvency Act). In the distribution, all creditors included are satisfied proportionally to their established claims (Section 306(3)); unsecured creditors typically receive a fraction of the nominal value. A contractual penalty is just another unsecured claim in the same pro rata distribution.

Bottom line: whether the debtor's assets are distributed by a bailiff according to priority or by an insolvency administrator pro rata, a new unsecured creditor of an over-indebted debtor will realistically receive almost nothing. Paper security (penalties, interest, acknowledgements) protects you only against a debtor who has something to pay with and something to lose. That is why checking the CEE and ISIR comes before fine-tuning penalty clauses: the cheapest "security" is to contract only with someone able to perform, and for significant transactions to use real security (a pledge, a solvent guarantor, advance payment, an attorney escrow), not just a penalty on paper.

Provisions cited from the current wording: Sections 332 and 337c of Act No. 99/1963 Coll.; Sections 109, 306 and 419 of Act No. 182/2006 Coll.; Decree No. 329/2008 Coll.; Act No. 120/2001 Coll.