Are electronic signatures legal?

For more than two decades, the law in most of the world has treated a properly captured electronic signature as the equal of a handwritten one. Three frameworks do most of the work: ESIGN and UETA in the United States, and eIDAS in the European Union.

This is general information, not legal advice. For a specific document or jurisdiction, consult a qualified lawyer.

United States: the ESIGN Act and UETA

The US runs on two complementary laws:

• The ESIGN Act (2000) is federal. It establishes that a signature, contract or record “may not be denied legal effect, validity, or enforceability solely because it is in electronic form” for transactions in interstate and foreign commerce.
• UETA (1999) is a model state law, adopted by 49 states plus the District of Columbia (New York has its own equivalent). It gives electronic records and signatures the same standing as paper for transactions within a state.

Together they cover the vast majority of agreements. For an electronic signature to hold up under them, four things generally need to be true:

1. Intent to sign — the person meant to sign, just as with a pen.
2. Consent to do business electronically — the parties agreed to use electronic records (consumers get specific disclosure rights).
3. Association — the signature is logically connected to the record it signs.
4. Record retention — the signed record can be retained and accurately reproduced.

European Union: eIDAS

The EU's eIDAS regulation (No 910/2014) applies across all member states and recognises three tiers of electronic signature, each with more built-in assurance than the last:

Tier	What it is	Typical use
SES — Simple	A basic electronic mark showing intent	Everyday, low-risk agreements
AES — Advanced	Uniquely linked to the signer, tamper-evident	Higher-value business contracts
QES — Qualified	AES + qualified device & certificate	Where legal equivalence to a wet signature is required by default

A qualified electronic signature (QES) is the only tier that automatically carries the same legal effect as a handwritten signature across the EU. The simple and advanced tiers are still valid and widely used — they just may require more supporting evidence if challenged.

Elsewhere in the world

Many other countries have equivalent legislation — the UK (its own post-Brexit version of eIDAS plus the Electronic Communications Act), Canada (PIPEDA and provincial acts), Australia (the Electronic Transactions Act), India, Singapore and more. The common thread everywhere is the same quartet: intent, consent, association and retention. Where you differ is in the finer points and the list of exceptions.

The documents that still need ink

No framework makes everything signable electronically. The exclusions vary by jurisdiction, but the usual suspects are:

• Wills, codicils and testamentary trusts
• Certain family-law matters (such as divorce or adoption papers in some places)
• Some real-estate deeds and property transfers
• Court orders and certain official or government filings
• Documents that must be notarised or witnessed with a wet-ink signature

What this means in practice

For day-to-day business and personal agreements, you can sign electronically with confidence. To make a signature as defensible as possible: capture clear consent, use a service that records a solid audit trail, match the authentication level to the stakes, and keep your own copy of the completed file and its certificate.