Can an NDA be signed electronically?

What the law says, by region

United States: under the federal ESIGN Act, a contract connected with interstate or foreign commerce cannot lose its legal effect merely because it was formed with an e-signature or an electronic record. The Act's definition is broad: a sound, symbol or process in electronic form, attached to or logically linked with the record, that someone adopts meaning to sign it. At state level the Uniform Electronic Transactions Act applies in 49 states; New York, the only holdout, uses its own statute (ESRA).

European Union: under the eIDAS Regulation an electronic signature shall not be denied legal effect and admissibility as evidence solely because it is electronic or does not meet the requirements for qualified electronic signatures. A qualified electronic signature has the equivalent legal effect of a handwritten signature.

United Kingdom: the UK kept the same two sentences in its own version of the eIDAS Regulation after Brexit. For England and Wales, the Law Commission's 2019 report states the position: an e-signature can execute a document as long as the signer means to authenticate it and any formalities that apply are complied with.

Where the answer can be “not like that”

The US law excludes some documents, such as wills, certain family-law matters and court papers, but not commercial agreements like NDAs. The catch in some countries is written-form rules. Germany's Civil Code, for example, says that where a statute prescribes written form, an electronic replacement needs the signer's name and a qualified electronic signature. An ordinary NDA is not normally subject to a statutory written-form requirement, but check if the NDA itself says it must be signed in a particular way, or if the governing law adds formalities for the type of deal.

The other limit is practical: the counterparty may insist on its own signing platform, a certificate-based signature or ink on paper. That is their choice to make, and following it is usually quicker than debating it.

Proving an e-signed NDA later

Arguments over an NDA tend to be about what was shared and how it was used, but it still pays to be able to show who signed the agreement and when. Signing platforms log whose email address opened and signed the document, from which IP address and at what time. With a simple signature on a PDF, as in NDAPDF, your records do that job: keep the email that delivered the signed PDF, the countersigned copy that came back, and the earlier drafts if the wording was negotiated.

Name the file clearly, for example “2026-09-27 NDA Acme – Brightside signed.pdf”, and store it where you keep contracts rather than only in your inbox. If the NDA was signed in counterparts, keep both signed copies.

Does an NDA need to be notarised or witnessed?

Normally not. NDAs are simple contracts, and witnesses or notaries are reserved for documents where the law or the parties require them, such as deeds or certain filings. If an NDA you received asks for a witness, that is a formality the parties chose; follow it, or ask whether it can be dropped. One English case to recognise: some templates, including the UK Intellectual Property Office's example one-way NDA, are executed as a deed with a witness. According to the Law Commission, the witness to a deed has to be physically there at the signing and must attest it, and that stays true when both of you use electronic signatures, so plan to have the witness in the room.

What NDAPDF adds, and what it does not

NDAPDF places a simple electronic signature on your PDF: your drawn or typed signature, printed name, title and date, written into the file in your browser. It does not add a certificate, a qualified signature or an audit trail, and it does not upload your document. For the usual NDA between businesses or with a freelancer, that is the standard way to sign. If the other side asks for a qualified or certificate-based signature, use a provider that issues one.

Sources

• 15 U.S.C. § 7001: general rule of validity (ESIGN Act)
• 15 U.S.C. § 7003: specific exceptions
• 15 U.S.C. § 7006: definitions, including “electronic signature”
• New York City Bar: New York's ESRA and the UETA
• eIDAS Regulation (EU) No 910/2014, Article 25: legal effect (EUR-Lex, consolidated text)
• eIDAS Regulation, Article 26: requirements for advanced electronic signatures (EUR-Lex)
• UK eIDAS Regulation, Article 25, as it applies in the UK (legislation.gov.uk)
• Law Commission: Electronic execution of documents (2019), including witnessing deeds
• UK Intellectual Property Office: example NDAs, executed as a deed
• German Civil Code (BGB), sections 126 and 126a (English translation)