--- title: "Are electronic signatures legally binding? · Attest" description: "Yes, for most agreements: ESIGN, UETA, eIDAS and similar laws say a signature can't be refused just for being electronic. The laws, exceptions and evidence." url: https://attest.datahubz.com/legal/are-electronic-signatures-legally-binding updated: 2026-10-12 --- [Attest](https://attest.datahubz.com/)/[Legal](https://attest.datahubz.com/legal) # Are electronic signatures legally binding? Yes, for most agreements: in the United States, the European Union, the United Kingdom and many other countries, the law says a signature or contract can't be denied legal effect just because it is electronic. A few documents, such as wills and some property deeds, follow special rules, and for everything else what matters is proof of who signed what, which Attest records with each signer's own passkey signature and a public blockchain anchor. By DataHubz · Updated October 12, 2026 · 8 min read · General information, not legal advice ## The rule: electronic is not a reason to refuse The electronic signature laws we reviewed share one core rule: a contract, and in most countries a signature, can't be refused legal effect just because it is in electronic form. - In the United States, the [ESIGN Act](https://www.govinfo.gov/content/pkg/USCODE-2023-title15/html/USCODE-2023-title15-chap96.htm) says a signature, contract or other record "may not be denied legal effect, validity, or enforceability solely because it is in electronic form" (15 U.S.C. 7001(a)). - In the European Union, the [eIDAS Regulation](https://eur-lex.europa.eu/legal-content/EN/TXT/?uri=CELEX:02014R0910-20241018) says 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" (Article 25(1)). The laws define an electronic signature broadly. In US federal law it is "an electronic sound, symbol, or process, attached to or logically associated with a contract or other record and executed or adopted by a person with the intent to sign the record" (15 U.S.C. 7006(5)). A typed name, a click on "I agree", a drawn signature and an approval with a passkey can all qualify. Two limits come with the rule. It removes one objection, the electronic form: a contract still needs an offer, an acceptance and parties able to agree. And private parties can't be made to sign electronically: in the US, ESIGN doesn't require anyone, other than a government agency for records that aren't contracts it is a party to, to use or accept electronic signatures (15 U.S.C. 7001(b)(2)), and UETA applies only between parties that agreed to deal electronically, judged from the context, including their conduct (section 5(b)). ## The main laws, country by country | Where | Main law | What it says | | -------------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | | United States | [ESIGN Act](https://www.govinfo.gov/content/pkg/USCODE-2023-title15/html/USCODE-2023-title15-chap96.htm), plus state law: [UETA](https://www.uniformlaws.org/HigherLogic/System/DownloadDocumentFile.ashx?DocumentFileKey=1b1ffc6b-9b6a-35a4-2a83-7b4d5c0f77a7&forceDialog=0) and New York's [ESRA](https://www.nysenate.gov/legislation/laws/STT/304) | Not denied legal effect solely because electronic. No signature tiers | | European Union | [eIDAS, Regulation (EU) No 910/2014](https://eur-lex.europa.eu/legal-content/EN/TXT/?uri=CELEX:02014R0910-20241018) | Not denied legal effect or admissibility solely because electronic (Art. 25(1)). Three tiers; only a qualified signature has the legal effect of a handwritten one (Art. 25(2)) | | United Kingdom | [Electronic Communications Act 2000, s. 7](https://www.legislation.gov.uk/ukpga/2000/7/section/7) and [UK eIDAS, Art. 25](https://www.legislation.gov.uk/eur/2014/910/article/25) | Same rule as the EU. English law asks whether the signer intended to authenticate the document (Law Commission, 2019) | | Canada | Provincial laws, such as Ontario's [Electronic Commerce Act, 2000](https://www.ontario.ca/laws/statute/00e17) | A document is not invalid or unenforceable only because it is electronic, and an electronic signature satisfies a legal signature requirement (Ontario ss. 4 and 11) | | Australia | [Electronic Transactions Act 1999](https://www.legislation.gov.au/C2004A00553/latest/text) and State Acts | A transaction is not invalid because it took place electronically (s 8). A signature requirement is met by a method that identifies the person and shows their intention, if reliable enough or proven in fact, and a private recipient consents (s 10) | | India | [Information Technology Act, 2000](https://www.indiacode.nic.in/handle/123456789/1999) | A contract is not unenforceable solely because it was formed electronically (s 10A). Where a law requires a signature, only a signature backed by a licensed Certifying Authority (eSign or a Digital Signature Certificate) satisfies it | | Brazil | [MP 2.200-2/2001](https://www.planalto.gov.br/ccivil%5F03/mpv/antigas%5F2001/2200-2.htm) | Electronic documents count for all legal purposes. ICP-Brasil signatures are presumed true (art. 10 §1); other methods count when the parties admit them or the person the document is used against accepts them (art. 10 §2) | | Mexico | [Código de Comercio, arts. 89 and 97](https://www.diputados.gob.mx/LeyesBiblio/pdf/CCom.pdf) | In commercial matters, an electronic signature has the same legal effects as a handwritten one and is admissible as evidence; where a signature is required, one appropriate for its purpose suffices | [Electronic signatures in the United States](https://attest.datahubz.com/legal/electronic-signatures-united-states) covers ESIGN, UETA and New York's ESRA in detail. In our review of 24 countries and the EU (October 2026), ordinary business contracts could generally be made electronically in every one, with conditions that vary. ## The EU tiers in plain words eIDAS defines three levels of electronic signature: - **Simple electronic signature:** any data in electronic form that a person uses to sign (Article 3(10)). Typed names ([is a typed name a legal signature?](https://attest.datahubz.com/legal/is-a-typed-name-a-legal-signature)), clicks, drawn signatures and passkey approvals fall here. - **Advanced electronic signature:** one that is uniquely linked to the signer, capable of identifying them, created with means the signer can use under their sole control with a high level of confidence, and linked to the signed data so any later change is detectable (Article 26). - **Qualified electronic signature:** an advanced signature created with a qualified signature creation device and based on a qualified certificate for electronic signatures, which is issued by a qualified trust service provider (Articles 3(12) and 3(15)). It has "the equivalent legal effect of a handwritten signature" (Article 25(2)) and is recognized as qualified in every member state (Article 24a). No tier can be refused legal effect or admissibility as evidence just because it is electronic or not qualified (Article 25(1)). National law decides which documents need written or handwritten form, and where it does, often only a qualified signature satisfies it. Most commercial contracts have no form requirement in most member states, so a simple electronic signature usually works. The UK uses the same three tiers; the United States has none. [Electronic vs digital signatures](https://attest.datahubz.com/legal/electronic-vs-digital-signatures) explains how the tiers relate to cryptography. ## Documents with special rules Some documents follow other laws that set a form, such as witnesses, a notary or a public register. Examples, which differ by country and change over time: - **Wills.** ESIGN and UETA don't apply to wills, codicils or testamentary trusts. England and Wales require two witnesses present at the same time (Wills Act 1837, s. 9), and India's IT Act doesn't apply to wills. - **Property deeds and land registration.** In England and Wales, a deed signed by an individual needs an attesting witness, and the Law Commission's view is that the witness must be physically present. EU member states may exclude contracts that create or transfer rights in real estate, other than rental rights, from electronic contracting (Directive 2000/31/EC, Article 9(2)). - **Notarized acts.** ESIGN lets a notary sign electronically (15 U.S.C. 7001(g)), but the notarial act itself follows notary law. - **Family law and court documents.** ESIGN excludes adoption, divorce and other family-law matters, and court orders, notices and official court documents such as briefs and pleadings (15 U.S.C. 7003). - **Powers of attorney and certain notices.** GOV.UK guidance says a lasting power of attorney in England and Wales can't be signed with digital signatures. ESIGN excludes notices such as utility shut-offs, foreclosure or eviction, and cancellations of health or life insurance. ## What makes an electronic signature strong evidence Courts can't exclude a signature just because it is electronic (UETA section 13; eIDAS Article 25(1)). If a signature is disputed, though, the party relying on it usually has to prove it. In US federal courts, the proponent "must produce evidence sufficient to support a finding that the item is what the proponent claims it is" ([Federal Rules of Evidence](https://www.uscourts.gov/forms-rules/current-rules-practice-procedure/federal-rules-evidence) 901(a)), and Canada's federal [Evidence Act](https://laws-lois.justice.gc.ca/eng/acts/C-5/FullText.html) puts the burden of proving an electronic document's authenticity on the person who wants to admit it (s. 31.1). Strong evidence answers four questions: | Question | Why it matters | What Attest records | | --------------------------------------- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | | **Identity:** who signed? | Under UETA, a signature is attributable to a person "if it was the act of the person", which may be shown "in any manner", including the efficacy of a security procedure (section 9(a)) | Each signature is made with a passkey registered to the signer's email address. A passkey is a cryptographic key only the signer controls, unlocked with Face ID, Touch ID, Windows Hello or the device PIN. Attest confirms control of the email address and the passkey, not a government ID | | **Intent:** did they mean to sign? | ESIGN's definition requires "the intent to sign" | The signer reviews the document and approves. Their passkey signs a statement that begins "I have reviewed and I sign", with the title and the document's fingerprint, and must confirm the signer is present and verified | | **Integrity:** is it the same document? | A changed document is not what was signed | The statement includes the SHA-256 fingerprint of the exact document and of the signer's entries. Change one byte and verification fails. The signed state is anchored on the Horizen public blockchain | | **Records:** can it be produced later? | Where a law requires a contract in writing, ESIGN lets an electronic one be denied effect if it can't be retained and accurately reproduced (15 U.S.C. 7001(e)) | Every party gets the same sealed PDF: the signed pages, with a "Signed with Attest" stamp on each signature and a seal line at the foot of every page, the certificate of completion, the audit trail up to completion in UTC and a "Verify it yourself, without us" page, with the original document, the evidence and an open-source verifier attached inside | A **fingerprint** (SHA-256 hash) is a short code calculated from a file's contents: change a single byte and the fingerprint changes. Anyone can check an Attest signed copy for free, with no account, at [attest.datahubz.com/verify](https://attest.datahubz.com/verify), or with the open-source verifier inside the copy, which runs in any browser without any Attest service and checks each signer's passkey signature, the original document, the pages you see and Attest's anchored record on Horizen. As with any evidence, a court decides how much weight it carries. See [how to prove someone signed electronically](https://attest.datahubz.com/guides/prove-someone-signed-electronically). ## Where Attest fits Attest signatures are electronic signatures, built for everyday agreements: client contracts, statements of work, NDAs, offer letters and vendor agreements. Every document is end-to-end encrypted, so Attest can't read it, and the people who sign need no account and never pay. Your first 2 documents are free, in total; after that, the Signing plan is $5 a month for 20 documents. ## Questions people ask Do electronic signatures hold up in court? Courts can't exclude them just because they are electronic: UETA section 13 in the US and eIDAS Article 25(1) in the EU say so directly. If the other side disputes a signature, the party relying on it generally has to prove who signed and what was signed, so the evidence behind the signature is what carries weight. Is an electronic signature the same as a handwritten one? In the United States, largely yes: where a law requires a signature, an electronic signature satisfies it (UETA section 7), and New York's ESRA gives it "the same validity and effect as the use of a signature affixed by hand". In the EU, only a qualified electronic signature is guaranteed the legal effect of a handwritten signature in every member state; for other electronic signatures, national law decides. Some countries, such as India and Argentina, accept only certificate-based signatures where a law requires a signature. Does the other party have to agree to sign electronically? Under some laws, yes, but the agreement doesn't need to be formal. In the US, UETA applies between parties that agreed to deal electronically, judged from the context and their conduct, and Australia's Electronic Transactions Act also lets consent be inferred from conduct. ESIGN doesn't require anyone, other than a government agency for records that aren't contracts it is a party to, to use or accept electronic signatures. Which documents can't be signed electronically? It depends on the country. Common examples are wills, some property deeds and land registrations, notarized acts, some family-law and court documents and, in the US, certain consumer notices such as eviction or utility shut-off notices. For these documents, the specific law decides the form. Is an Attest signature legally binding? Attest signatures are electronic signatures. Electronic signatures are recognized for most agreements in the United States (the ESIGN Act and UETA) and the European Union (eIDAS). Some documents, such as wills or certain notarized deeds, have special rules in many places: check yours. Each Attest signature is the signer's own passkey signature over a statement naming the document's fingerprint, anchored on a public blockchain, and anyone can check it for free. ## Sources 1. [15 U.S.C. Chapter 96, Electronic Signatures in Global and National Commerce (United States Code, 2023 edition)](https://www.govinfo.gov/content/pkg/USCODE-2023-title15/html/USCODE-2023-title15-chap96.htm), U.S. Government Publishing Office, read October 11, 2026 2. [Uniform Electronic Transactions Act (1999), final text with comments](https://www.uniformlaws.org/HigherLogic/System/DownloadDocumentFile.ashx?DocumentFileKey=1b1ffc6b-9b6a-35a4-2a83-7b4d5c0f77a7&forceDialog=0), Uniform Law Commission, read October 11, 2026 3. [New York State Technology Law section 304](https://www.nysenate.gov/legislation/laws/STT/304), New York State Senate, read October 11, 2026 4. [Regulation (EU) No 910/2014 (eIDAS), consolidated text of October 18, 2024](https://eur-lex.europa.eu/legal-content/EN/TXT/?uri=CELEX:02014R0910-20241018), EUR-Lex, Publications Office of the European Union, read October 11, 2026 5. [Directive 2000/31/EC (e-Commerce Directive), Article 9](https://eur-lex.europa.eu/legal-content/EN/TXT/?uri=CELEX:02000L0031-20240217), EUR-Lex, Publications Office of the European Union, read October 11, 2026 6. [Electronic Communications Act 2000, section 7](https://www.legislation.gov.uk/ukpga/2000/7/section/7), legislation.gov.uk (The National Archives), read October 11, 2026 7. [UK eIDAS, Article 25](https://www.legislation.gov.uk/eur/2014/910/article/25), legislation.gov.uk (The National Archives), read October 11, 2026 8. [Electronic execution of documents, Law Com No 386 (2019)](https://cdn.websitebuilder.service.justice.gov.uk/uploads/sites/54/2025/12/Electronic-Execution-Report.pdf), Law Commission of England and Wales, read October 11, 2026 9. [Wills Act 1837, section 9](https://www.legislation.gov.uk/ukpga/Will4and1Vict/7/26/section/9), legislation.gov.uk (The National Archives), read October 11, 2026 10. [Law of Property (Miscellaneous Provisions) Act 1989, section 1](https://www.legislation.gov.uk/ukpga/1989/34/section/1), legislation.gov.uk (The National Archives), read October 11, 2026 11. [Make a lasting power of attorney](https://www.gov.uk/power-of-attorney/make-lasting-power), GOV.UK, read October 11, 2026 12. [Electronic Commerce Act, 2000 (Ontario)](https://www.ontario.ca/laws/statute/00e17), Government of Ontario (e-Laws), read October 11, 2026 13. [Canada Evidence Act, sections 31.1 to 31.8](https://laws-lois.justice.gc.ca/eng/acts/C-5/FullText.html), Justice Laws Website, Government of Canada, read October 11, 2026 14. [Electronic Transactions Act 1999 (Cth)](https://www.legislation.gov.au/C2004A00553/latest/text), Federal Register of Legislation, Australian Government, read October 11, 2026 15. [The Information Technology Act, 2000](https://www.indiacode.nic.in/handle/123456789/1999), India Code, Legislative Department, Government of India, read October 11, 2026 16. [Medida Provisória nº 2.200-2/2001](https://www.planalto.gov.br/ccivil%5F03/mpv/antigas%5F2001/2200-2.htm), Presidência da República, Brazil, read October 11, 2026 17. [Código de Comercio](https://www.diputados.gob.mx/LeyesBiblio/pdf/CCom.pdf), Cámara de Diputados, Mexico, read October 11, 2026 18. [Ley 25.506 de Firma Digital, consolidated text](https://servicios.infoleg.gob.ar/infolegInternet/anexos/70000-74999/70749/texact.htm), InfoLEG, Ministerio de Justicia, Argentina, read October 11, 2026 19. [Federal Rules of Evidence](https://www.uscourts.gov/forms-rules/current-rules-practice-procedure/federal-rules-evidence), United States Courts, read October 11, 2026 ## Read next - [Electronic signatures in the United States](https://attest.datahubz.com/legal/electronic-signatures-united-states) US e-signature law in plain language: the ESIGN Act, UETA and New York's ESRA, consumer consent rules, excluded documents and what makes a signature provable. - [Electronic vs digital signatures: the difference](https://attest.datahubz.com/legal/electronic-vs-digital-signatures) An electronic signature is a legal idea; a digital signature is a cryptographic technique. How they relate, where the EU tiers fit and where Attest fits. - [Is a typed name a legal signature?](https://attest.datahubz.com/legal/is-a-typed-name-a-legal-signature) A typed name can be a legal signature under ESIGN, UETA, eIDAS and UK law when typed with intent to sign. Why proof is the weak point, and how a passkey helps. - [Document signing](https://attest.datahubz.com/sign) Electronic signatures with a passkey: no account or password for signers, documents encrypted in the browser, and a signed copy anyone can verify. --- Source: https://attest.datahubz.com/legal/are-electronic-signatures-legally-binding