Are Electronic Signatures Legally Binding? Digital vs Paper

Yes. In most countries a contract signed electronically is as binding as one signed on paper: the EU, the US, the UK and Taiwan all provide that a signature or contract cannot be denied legal effect, or admissibility as evidence, solely because it is electronic. What still differs is the list of documents excluded from these rules, the level of signature some transactions require, and how easily you can prove who signed and that the document was not changed afterwards.

Are electronic signatures legally binding?

Yes, as a general rule in the EU, the US, the UK and Taiwan. Many national laws follow the UNCITRAL Model Law on Electronic Commerce (1996), which says information “shall not be denied legal effect, validity or enforceability solely on the grounds that it is in the form of a data message” (Art. 5). Where the law requires a signature, an electronic method meets it if it identifies the person, indicates their approval, and is as reliable as appropriate for the purpose (Art. 7). Legislation based on or influenced by the Model Law has been adopted in 88 States and 171 jurisdictions (UNCITRAL status page). The Model Law on Electronic Signatures (2001) adds technology-neutral reliability criteria for treating electronic and handwritten signatures as equivalent.

Jurisdiction	Rule	What it says
European Union	eIDAS Regulation (EU) No 910/2014, Art. 25	An electronic signature cannot be denied legal effect or admissibility as evidence solely because it is electronic or not qualified; a qualified electronic signature has the equivalent legal effect of a handwritten signature and is recognised in all Member States.
United States	E-SIGN Act, 15 U.S.C. §7001(a)	In interstate or foreign commerce, a signature, contract or record may not be denied legal effect, validity or enforceability solely because it is electronic.
Taiwan	Electronic Signatures Act, Arts. 4–6 (amended 15 May 2024)	Legal effect may not be denied only because of electronic form; an electronic signature satisfies a legal requirement for a signature or seal; a qualifying digital signature is presumed to be the signer’s own.
United Kingdom	Electronic Communications Act 2000, s.7	An electronic signature, and its certification, is admissible in evidence on the authenticity and integrity of the communication or data.

Which documents cannot be signed electronically?

Each law has its own exclusions, so check the one that applies. Examples:

• United States: E-SIGN does not apply to wills, codicils and testamentary trusts, adoption, divorce and other family law, most of the Uniform Commercial Code, court orders and official court documents, and certain consumer notices such as utility cut-offs, foreclosure or eviction, insurance cancellation and product recalls (15 U.S.C. §7003).
• European Union: eIDAS does not affect national or Union law on the conclusion and validity of contracts or other obligations relating to form (Art. 2(3)), so national rules on, for example, notarial deeds still apply.
• Taiwan: other laws may exclude the general rules (Electronic Signatures Act, Art. 11), and the Act’s provisions may be declared inapplicable to judicial procedure (Art. 1).

If a document must be notarised or authenticated for use abroad, ask the receiving authority before you sign whether it accepts an electronically signed version. See how documents from Taiwan are authenticated for use abroad.

Electronic signature vs digital signature: what is the difference?

A digital signature is one type of electronic signature, created with cryptography and backed by a certificate. “Electronic signature” is the broad term: in the EU it means data in electronic form attached to or logically associated with other data and used by the signatory to sign (eIDAS Art. 3), which includes a typed name or a click. Taiwan defines a digital signature as an electronic signature created by cryptographic means with the signer’s private key, verifiable with the public key and supported by a certificate from a certification authority (Electronic Signatures Act, Art. 2).

The level matters when the law or the other side requires more than a basic signature:

Level	EU (eIDAS)	Taiwan
Basic electronic signature	Cannot be refused solely for being electronic (Art. 25(1))	Satisfies a signature or seal requirement (Art. 5)
Advanced electronic signature	Uniquely linked to and capable of identifying the signatory (Art. 26)	No separate tier
Qualified / certified digital signature	Qualified signature: equivalent legal effect of a handwritten signature, recognised across Member States (Art. 25(2)–(3))	Presumed to be the signer’s own when supported by a valid certificate from an approved certification authority (Art. 6)

The EU amended eIDAS by Regulation (EU) 2024/1183, published on 30 April 2024 and in force from the twentieth day after publication, to create the European Digital Identity Wallet; it did not change the legal-effect rule in Art. 25.

Digital contract vs paper contract: what actually differs?

The legal effect is usually the same; the differences are in evidence, exceptions and handling.

	Paper contract	Digital contract
Legal effect	Binding if the contract is valid	Same, unless the transaction is excluded or needs a special form
Proof of who signed	Handwriting, witnesses, notarisation	Identity checks, certificates, the signing record
Proof nothing changed	Initialled pages, original copy	Integrity check (e.g. hash or certificate), retained file
Counterparty agreement	Not needed to use paper	In Taiwan, the counterparty must agree or be given a reasonable chance to object (Art. 5)
Retention	Originals stored	Keep the record with data that verifies it (Taiwan Art. 8 lists dispatch and receipt place, IP address, signing process, date and time)

How do you make an e-signed contract hold up?

Plan the evidence before you send the contract for signature:

1. Confirm the transaction is not excluded under the governing law and whether a higher signature level is required.
2. Get the counterparty’s agreement to sign electronically, in the contract or before it.
3. Verify the signer’s identity and authority to sign for a company.
4. Use a method that makes changes after signing detectable.
5. Keep the signed file together with the signing record for as long as you keep the contract.

A signature method proves how the contract was signed, not what it says. Our contract review checks the terms; for the clauses to look at first, see the essential clauses every business contract needs.

Frequently asked questions

Is a scanned signature or a typed name a valid electronic signature?

It can be. Under eIDAS, the US E-SIGN Act and Taiwan’s Act, a basic electronic signature is not refused just for being electronic. Its weight as evidence depends on what else shows that the person signed and intended to be bound.

Can a contract between a Taiwanese company and a foreign company be signed electronically?

Usually yes, provided the governing law allows it and the transaction is not excluded. Under Taiwan’s Act, if the other party has not agreed to electronic form, it must be given a reasonable opportunity to object (Art. 5).

Do I still need the paper original?

Not where an electronic record is accepted. In Taiwan, a requirement to present an original is met by an electronic record whose content stays complete and accessible, except where handwriting or seals must be verified or another law says otherwise (Art. 7).