Are Electronic Signatures Legally Binding?

Electronic signatures are legally binding in the United States, the European Union, the United Kingdom, Canada, Australia, and most of the world. They have been for over two decades. A contract signed electronically is, in the vast majority of cases, exactly as enforceable as one signed in ink.

What actually matters is not whether you signed electronically, but whether you can later prove who signed, what they signed, and that they intended to. That is where the audit trail comes in — more on that below.

United States: the ESIGN Act and UETA

Two laws make electronic signatures binding in the US:

• The ESIGN Act (Electronic Signatures in Global and National Commerce Act), a federal law in effect since 2000. It provides that a signature, contract, or record “may not be denied legal effect, validity, or enforceability solely because it is in electronic form.” (15 U.S.C. § 7001)
• The Uniform Electronic Transactions Act (UETA), a model state law from 1999 that has been adopted by 49 states, the District of Columbia, Puerto Rico, and the US Virgin Islands. New York has not adopted UETA but reaches the same result through its own Electronic Signatures and Records Act (ESRA).

Together they establish four practical requirements for an enforceable electronic signature:

1. Intent to sign — the signer took a deliberate action to sign.
2. Consent to do business electronically — for consumers, this consent must be obtained and is sometimes required in writing.
3. Association of the signature with the record — the signature is logically connected to the document.
4. Record retention — the signed record can be retained and accurately reproduced.

A typed name, a drawn signature, or a click of an “I agree” button can all satisfy these requirements, provided intent and attribution are clear.

European Union: eIDAS

In the EU, the eIDAS Regulation (Regulation (EU) No 910/2014, as amended by Regulation (EU) 2024/1183) governs electronic signatures across all 27 member states. Its cornerstone, Article 25(1), states that an electronic signature “shall not be denied legal effect and admissibility as evidence in legal proceedings solely on the grounds that it is in an electronic form.”

eIDAS defines three tiers, which we cover in detail in eIDAS explained: SES vs AdES vs QES:

• Simple Electronic Signature (SES) — admissible and legally effective, suitable for the large majority of commercial agreements.
• Advanced Electronic Signature (AdES) — adds identity and tamper-evidence requirements.
• Qualified Electronic Signature (QES) — the only tier with automatic legal equivalence to a handwritten signature throughout the EU (Article 25(2)).

For most B2B and commercial contracts, an SES is sufficient and admissible.

United Kingdom, Canada, and elsewhere

• United Kingdom — eIDAS was retained in UK law after Brexit, and the Law Commission confirmed in 2019 that electronic signatures are valid for executing documents under English law.
• Canada — the federal PIPEDA and provincial laws such as the Electronic Transactions Act recognise electronic signatures; some government and land-registry documents have specific requirements.
• Australia — the Electronic Transactions Act 1999 gives electronic signatures legal effect.

The common thread worldwide: electronic signatures are valid by default, with a short list of exceptions.

When you can’t use an electronic signature

A small set of documents are carved out of e-signature laws and typically still require a wet-ink signature, notarisation, or a higher signature tier. Under the US ESIGN Act (15 U.S.C. § 7003) and similar rules elsewhere, these commonly include:

• Wills, codicils, and testamentary trusts
• Family-law documents such as divorce decrees and adoptions
• Court orders, pleadings, and official court notices
• Certain real-estate transfers and registered-land instruments
• Negotiable instruments and documents under specific Articles of the Uniform Commercial Code
• Notices of utility shut-off, default, foreclosure, eviction, or insurance cancellation
• Documents that must accompany the transport of hazardous materials

Some high-value transactions in the EU — for example certain real-estate or formal corporate filings — may require an AdES or QES under a member state’s national law rather than a simple signature.

What actually makes an e-signature hold up: the audit trail

Legal validity is one thing; proving it in a dispute is another. The evidentiary strength of an electronic signature comes from the record that surrounds it:

• Who signed — the signer’s identity, email, and authentication.
• When and from where — timestamps, IP addresses, and device information for each action (sent, viewed, signed, completed).
• What they signed — a tamper-evident seal on the final document, so any later modification is detectable.

A platform that records a complete audit trail and seals the finished document with a cryptographic hash gives you far stronger evidence than a scanned PDF or a photographed signature. Signatura, for example, records a full audit trail and seals every completed document with a SHA-256 hash that anyone can re-verify — see how we secure documents for the details.

Frequently asked questions

Is a typed name a legal signature?

Yes, if it shows intent to sign and is associated with the document. A typed name, a drawn mark, or clicking “Agree” can all be valid electronic signatures under ESIGN, UETA, and eIDAS.

Are electronic signatures admissible in court?

Yes. Both US law and eIDAS Article 25(1) explicitly prevent a signature from being rejected as evidence solely because it is electronic. The audit trail is what carries the evidentiary weight.

Do both parties have to agree to sign electronically?

Generally yes — there must be intent and, for consumers, consent to transact electronically. Most signing platforms capture this consent as part of the signing flow.

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Sources: ESIGN Act, 15 U.S.C. § 7001 (US Code); Regulation (EU) No 910/2014 (eIDAS), EUR-Lex; Uniform Law Commission, Uniform Electronic Transactions Act (1999).