A signed company document can still be rejected overseas if the receiving authority cannot verify who signed it, whether they had authority, or whether the signature is genuine. Knowing how to notarise company documents before they are sent abroad can prevent expensive delays to a transaction, bank application, overseas registration or commercial agreement.

Notarisation is not simply a stamp. A Notary Public must be satisfied about the company’s existence, the identity of the person appearing before them, and that person’s authority to sign or confirm the document. The exact requirements depend on the document, where it will be used and the receiving organisation’s rules.

When does a company document need notarisation?

Company documents are commonly notarised for use outside the UK. Examples include powers of attorney, board resolutions, certificates of incorporation, constitutional documents, contracts, declarations, bank forms, foreign company registration papers and documents required for an overseas property purchase.

A foreign bank, public authority, court, registry or business partner may ask for a notarised document because it provides an independent verification of the signature and capacity of the signatory. In some cases, a UK solicitor’s certification is enough. In others, the receiving party will specifically require a notarial act, followed by an apostille or consular legalisation.

Do not assume that a document needs every level of certification. Asking the overseas recipient precisely what it requires at the outset is usually the quickest and most cost-effective approach. Confirm whether it needs the original document, a notarised copy, a notarised signature, an apostille, translation, or legalisation by an embassy or consulate.

How to notarise company documents: the key steps

The process begins before the appointment. A Notary Public will need sufficient evidence to establish the relevant facts, so gathering the right papers in advance makes a significant difference.

Check the recipient’s requirements

First, establish the country and organisation in which the document will be used. Countries that are party to the Hague Apostille Convention generally accept an apostille after notarisation. Other countries may require further legalisation through their embassy or consulate.

Requirements can vary between institutions in the same country. For example, one overseas bank may accept a notarised copy of a board resolution, while another may require the original resolution, specific wording and legalisation. If the recipient has provided a template or instruction sheet, provide it to the Notary Public before your appointment.

Prepare evidence that the company exists

The Notary Public will normally need to verify the company’s details and current status. A recent Companies House search may be appropriate, but it is not always enough on its own. Depending on the matter, you may be asked for the certificate of incorporation, memorandum and articles of association, details of directors and shareholders, or other corporate records.

For overseas companies, equivalent official registry documents may be needed. If the company is part of a group, a more detailed review may be necessary to establish which entity is signing and how authority flows through the group structure.

Prove who has authority to sign

This is often the most important part of the process. The person signing may be a director, company secretary, attorney or another authorised representative. The Notary Public must see evidence that they are entitled to act for the company in relation to that particular document.

A board resolution is commonly used to grant or confirm authority. It should clearly identify the company, the document or transaction, the authorised signatory or signatories, and the authority being given. It should also be properly approved in line with the company’s articles and internal governance arrangements.

Where a power of attorney is being used, the original or a suitably certified copy may be required. A Notary Public may also need to see the underlying board resolution that authorised the power of attorney. If there is any uncertainty about authority, address it before signing rather than hoping the overseas recipient will overlook it.

Bring identification and proof of address

Every individual appearing before the Notary Public must have their identity verified. Usually, this means an original current passport or photo driving licence, together with recent proof of residential address, such as a bank statement or utility bill.

The precise identification requirements can depend on the circumstances and the Notary Public’s professional obligations. Where signatories are based overseas, an appointment arrangement may need additional planning. Corporate documents involving trusts, complex ownership structures or higher-risk jurisdictions can require further information about beneficial owners and the purpose of the transaction.

Sign correctly in the Notary Public’s presence

Do not sign a document in advance unless you have been specifically advised to do so. If the notarial act confirms a signature, the signatory will generally need to sign in the Notary Public’s presence. The Notary Public will then complete the notarial certificate, sign it and apply their official seal.

Execution formalities matter. A document may need to be signed by one or more directors, a director and witness, or an attorney, depending on its nature and the company’s governing documents. The rules of the country where the document will be used may also affect the form of execution. A Notary Public can identify practical issues, but foreign legal requirements may need confirmation from a lawyer in the relevant jurisdiction.

Notarisation, apostilles and legalisation

These terms are often used interchangeably, but they are different stages.

Notarisation is the act carried out by the Notary Public. It may authenticate a signature, certify a copy, witness execution or confirm corporate authority after reviewing supporting evidence.

An apostille is then issued by the UK’s designated authority for documents intended for use in a Hague Convention country. It verifies the Notary Public’s signature and seal, rather than rechecking the underlying commercial transaction.

Legalisation may be needed for countries outside the Apostille Convention. This can involve authentication followed by endorsement from the destination country’s embassy or consulate. Processing times and requirements vary, so this stage should be factored into the transaction timetable.

If documents are not in the language required by the receiving authority, a certified translation may also be needed. It is better to confirm the expected order of notarisation, translation and legalisation before arranging any of them, as the wrong sequence can mean documents must be prepared again.

Common problems that cause delays

The most common issue is inadequate evidence of signing authority. A person may be listed as a director but lack authority under the company’s internal arrangements for a particular transaction. An unsigned, undated or vague board resolution can create the same problem.

Another frequent issue is using out-of-date company documents. Overseas recipients may require a recent registry extract or certificate, particularly for bank account opening, property matters or company registration. If the company’s name, directors or registered office have recently changed, make sure the supporting documents reflect the current position.

Clients can also encounter difficulties where a document has already been signed, contains handwritten amendments, or does not match the recipient’s required wording. Send a draft to the Notary Public as early as possible. This allows any concerns to be identified before the signatory attends and before legalisation fees are incurred.

Planning a smooth notarial appointment

For a straightforward matter, preparation is usually more important than the appointment itself. Provide the document, destination country, recipient instructions, company records, authority documents and identification in advance where possible. Let the Notary Public know whether there is a fixed completion date or overseas filing deadline.

A well-prepared notarial service should give you a clear view of what is required, the likely timescale and any further legalisation steps. At White Horse Solicitors & Notary Public, the focus is on reviewing the requirements carefully so that company documents are prepared for their intended use, not merely stamped and sent away.

Where the document supports an important overseas deal, allow time for questions from the receiving authority. Careful preparation at the start is usually the best protection against a rejected document at the point it matters most.