A Polish business checking an Irish customer or supplier should not begin by entering an Irish CRO number into Poland’s KRS search. The CRO number identifies a company registered in the Republic of Ireland. Poland’s KRS and CEIDG cover different Polish business records. The first task is to identify the legal counterparty on the contract; only then choose the appropriate national register.
Direct answer
Search the Irish company’s legal name or CRO number on Businesses.ie and confirm important details at CRO CORE. Poland’s official company search combines KRS and CEIDG searches for Polish records. Use KRS for an identified Polish company and CEIDG for an identified sole trader; do not infer that an Irish supplier must be present in either simply because it trades with Poland.
Irish CRO, Polish KRS and CEIDG are not interchangeable
| Record | Use it for | Common mistake |
|---|---|---|
| Irish CRO company record | Irish-incorporated company and its public filings | Searching only a Polish site for an Irish number |
| Polish KRS | Polish entities registered in the National Court Register | Assuming a similar Polish name is the Irish company |
| Polish CEIDG | Polish sole traders and applicable individual business entries | Treating an individual trader as an Irish limited company |
| NIP / VAT information | Tax identification and EU VAT validation where relevant | Entering a tax number in the wrong company-register field |
Poland’s government business portal says its advanced company search combines the CEIDG and KRS search engines and accepts fields such as company name and NIP. It also distinguishes registering sole traders in CEIDG from companies in KRS. That distinction is useful when an Irish company works through a Polish agent or partner: the agent’s Polish record does not prove the Irish company’s existence or liability.
Search an Irish company for a Polish credit decision
- Request the full Irish legal name, CRO number and registered address, not only a trade name.
- Search by CRO number, open the exact Irish result and compare status and incorporation date.
- Review CRO CORE and available filings when offering credit or placing a large order.
- Ask whether a Polish branch, company or sole trader appears on the contract, invoice or delivery paperwork.
- Search any identified Polish entity in the appropriate KRS or CEIDG record.
- Match the actual contract debtor to the company whose accounts or payment history you assessed.
- Validate a supplied EU VAT number in VIES and confirm bank details independently.
Keep the country and register beside each number in your supplier file. “Registration number” by itself is ambiguous when the same group has an Irish company, Polish subsidiary and Polish tax identifiers. The legal debtor is the entity that signs the credit agreement or purchase order, not necessarily the name on the logo.
Polish distributor versus Irish parent
An Irish manufacturer may appoint an independent Polish distributor. If the distributor buys and resells in its own name, its KRS or CEIDG record may be the relevant counterparty for your Polish purchase. The Irish manufacturer’s CRO history is background rather than a direct guarantee of the distributor’s debts. Ask who invoices, who owns the goods at each stage and who handles defects or returns.
A Polish subsidiary is a separate legal entity from its Irish shareholder. A Polish branch of the Irish company has a different legal character. Do not rely on a group brand to decide who owes money. Our branch-versus-subsidiary guide explains the structure; an accountant or lawyer can advise on liability and enforcement for a material arrangement.
What the Irish CRO record contributes
The CRO record helps establish the home company’s name, number, status, incorporation date, registered office and available filings. Directors and annual returns can add context, but check filing dates: an older financial statement may not describe current cash or order capacity. If a company claims long-standing operations, separate the age of the legal entity from the age of the brand or the careers of its founders.
A normal register status does not mean the company is currently trading, solvent or able to meet a Polish buyer’s contract. A missing turnover figure in reduced accounts does not mean zero turnover. For a new customer with payment terms, read our credit-check and payment-terms guide and request current evidence proportionate to the credit limit.
How to use VIES without confusing it with KRS
VIES is the EU tool for validating VAT numbers for cross-border transactions; it queries national tax databases. It is not a company register. A VIES result cannot tell you whether a Polish sole trader, Polish company or Irish company is the contractual seller. The Commission notes that an invalid result can have several causes, including a number not activated for intra-EU transactions or pending registration.
Keep the VAT result and date, and resolve a mismatch with the supplier and advisers before treating an invoice in a particular way. VAT treatment depends on goods or services, movement and the parties’ status. Do not use a CRO company number in place of an Irish VAT number or a Polish NIP in place of a KRS record.
Use the EU register network as a discovery route
The European e-Justice Portal’s “Find a company” service connects national business registers for specified company forms and branches. It can help locate a record across the EU when you know a company name but not the country. Its scope does not mean every Polish sole trader or tax registration will appear. Once you identify an Irish company, verify its record in the CRO source and record the company number.
Do not assume a matching name across borders proves ownership. Check formal filings or request a group chart backed by source records where group relationships matter. A paid Irish company report can organise public information but cannot guarantee a Polish affiliate’s obligations.
Before paying or granting credit
- identify the entity signing, invoicing and receiving payment;
- match each national number to the correct register and legal name;
- review the Irish filing dates and the Polish entity’s current entry where applicable;
- independently confirm a changed bank account rather than replying to the same email;
- set credit terms against the actual debtor, not against an unrelated group member;
- keep dated evidence of searches, VAT validation and supplier explanations.
If the supplier refuses to identify the contracting company, pauses a promised delivery until money is sent to a personal account, or provides inconsistent numbers, stop and clarify the transaction. These signals are not a legal conclusion, but they are sufficient to defer payment until the paperwork aligns. For the Irish identity portion, see our company-legitimacy guide.
Sources and editorial review
Reviewed on 22 September 2026 against the CRO’s CORE search guidance, Poland’s official combined KRS/CEIDG company search and business-register explanation, and the European Commission’s VIES guidance. This is general register research, not Polish or Irish legal, tax or credit advice.